| 1 |
<?php |
| 2 |
/** |
| 3 |
* SEO Score Calculator |
| 4 |
* |
| 5 |
* Advanced SEO scoring system based on 2025 Google ranking factors |
| 6 |
* Implements AI-driven content analysis, searcher engagement signals, and current SEO best practices |
| 7 |
* |
| 8 |
* @package ThinkRank\AI |
| 9 |
* @since 1.0.0 |
| 10 |
*/ |
| 11 |
|
| 12 |
declare(strict_types=1); |
| 13 |
|
| 14 |
namespace ThinkRank\AI; |
| 15 |
|
| 16 |
use ThinkRank\Core\Database; |
| 17 |
|
| 18 |
// Prevent direct access |
| 19 |
if (!defined('ABSPATH')) { |
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exit; |
| 21 |
} |
| 22 |
|
| 23 |
/** |
| 24 |
* SEO Score Calculator Class |
| 25 |
* |
| 26 |
* Implements 2025 SEO scoring algorithm based on: |
| 27 |
* - Google's Q1 2025 algorithm updates (First Page Sage research) |
| 28 |
* - Satisfying content as #1 ranking factor (23%) |
| 29 |
* - Searcher engagement and intent satisfaction (12%) |
| 30 |
* - Mobile Experience Score (MES) and Core Web Vitals 2.0 |
| 31 |
* - Content freshness and niche expertise signals |
| 32 |
* |
| 33 |
* @since 1.0.0 |
| 34 |
*/ |
| 35 |
class SEOScoreCalculator { |
| 36 |
|
| 37 |
/** |
| 38 |
* Database instance |
| 39 |
* |
| 40 |
* @var Database |
| 41 |
*/ |
| 42 |
private Database $database; |
| 43 |
|
| 44 |
/** |
| 45 |
* 2025 SEO scoring factors (Q1 2025 Google Algorithm) |
| 46 |
* Based on First Page Sage research and Google's latest updates |
| 47 |
* |
| 48 |
* @var array |
| 49 |
*/ |
| 50 |
private array $scoring_factors = [ |
| 51 |
'satisfying_content' => 23, // #1: Consistent publication of satisfying content |
| 52 |
'title_optimization' => 14, // #2: Keyword in meta title (looser matching) |
| 53 |
'niche_expertise' => 13, // #3: Hub & spoke content clusters |
| 54 |
'searcher_engagement' => 12, // #4: Dwell time, bounce rate, pages/session |
| 55 |
'backlink_authority' => 13, // #5: Quality backlinks (declining but important) |
| 56 |
'content_freshness' => 6, // #6: Quarterly content updates |
| 57 |
'mobile_experience' => 5, // #7: Mobile Experience Score (MES) - NEW 2025 |
| 58 |
'trustworthiness' => 4, // #8: E-E-A-T verification |
| 59 |
'link_diversity' => 3, // #9: Link distribution across multiple pages |
| 60 |
'core_web_vitals' => 3, // #10: Page speed + Interaction Readiness |
| 61 |
'site_security' => 2, // #11: SSL certificate |
| 62 |
'internal_linking' => 1, // #12: Declining importance |
| 63 |
'technical_factors' => 1, // #13: Meta descriptions, schema, etc. |
| 64 |
]; |
| 65 |
|
| 66 |
/** |
| 67 |
* Constructor |
| 68 |
* |
| 69 |
* @param Database $database Database instance |
| 70 |
*/ |
| 71 |
public function __construct(Database $database) { |
| 72 |
$this->database = $database; |
| 73 |
} |
| 74 |
|
| 75 |
/** |
| 76 |
* Calculate comprehensive modern SEO score |
| 77 |
* |
| 78 |
* @param array $content_data Content analysis data |
| 79 |
* @param array $metadata Post metadata |
| 80 |
* @param array $options Additional options |
| 81 |
* @return array Complete scoring result |
| 82 |
*/ |
| 83 |
public function calculate_score(array $content_data, array $metadata, array $options = []): array { |
| 84 |
$scores = []; |
| 85 |
$suggestions = []; |
| 86 |
$total_score = 0; |
| 87 |
|
| 88 |
try { |
| 89 |
// 1. Satisfying Content (23 points) - #1 factor in 2025 |
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$satisfying_result = $this->score_satisfying_content($content_data, $options['target_keyword'] ?? ''); |
| 91 |
$scores['satisfying_content'] = $satisfying_result; |
| 92 |
$total_score += $satisfying_result['score']; |
| 93 |
$suggestions = array_merge($suggestions, $satisfying_result['suggestions']); |
| 94 |
} catch (\Exception $e) { |
| 95 |
throw $e; |
| 96 |
} |
| 97 |
|
| 98 |
try { |
| 99 |
// 2. Title Optimization (14 points) - Looser keyword matching in 2025 |
| 100 |
$title_result = $this->score_2025_title_optimization($metadata['title'] ?? '', $options['target_keyword'] ?? ''); |
| 101 |
$scores['title_optimization'] = $title_result; |
| 102 |
$total_score += $title_result['score']; |
| 103 |
$suggestions = array_merge($suggestions, $title_result['suggestions']); |
| 104 |
} catch (\Exception $e) { |
| 105 |
throw $e; |
| 106 |
} |
| 107 |
|
| 108 |
try { |
| 109 |
// 3. Niche Expertise (13 points) - Hub & spoke content clusters |
| 110 |
$expertise_result = $this->score_niche_expertise($content_data, $options['target_keyword'] ?? ''); |
| 111 |
$scores['niche_expertise'] = $expertise_result; |
| 112 |
$total_score += $expertise_result['score']; |
| 113 |
$suggestions = array_merge($suggestions, $expertise_result['suggestions']); |
| 114 |
} catch (\Exception $e) { |
| 115 |
throw $e; |
| 116 |
} |
| 117 |
|
| 118 |
try { |
| 119 |
// 4. Searcher Engagement (12 points) - Dwell time, bounce rate, pages/session |
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$engagement_result = $this->score_searcher_engagement($content_data); |
| 121 |
$scores['searcher_engagement'] = $engagement_result; |
| 122 |
$total_score += $engagement_result['score']; |
| 123 |
$suggestions = array_merge($suggestions, $engagement_result['suggestions']); |
| 124 |
} catch (\Exception $e) { |
| 125 |
throw $e; |
| 126 |
} |
| 127 |
|
| 128 |
try { |
| 129 |
// 5. Backlink Authority (13 points) - Quality backlinks |
| 130 |
$backlink_result = $this->score_backlink_authority($content_data); |
| 131 |
$scores['backlink_authority'] = $backlink_result; |
| 132 |
$total_score += $backlink_result['score']; |
| 133 |
$suggestions = array_merge($suggestions, $backlink_result['suggestions']); |
| 134 |
} catch (\Exception $e) { |
| 135 |
throw $e; |
| 136 |
} |
| 137 |
|
| 138 |
// 6. Content Freshness (6 points) - Quarterly updates priority |
| 139 |
$freshness_result = $this->score_content_freshness($content_data); |
| 140 |
$scores['content_freshness'] = $freshness_result; |
| 141 |
$total_score += $freshness_result['score']; |
| 142 |
$suggestions = array_merge($suggestions, $freshness_result['suggestions']); |
| 143 |
|
| 144 |
// 7. Mobile Experience (5 points) - NEW: Mobile Experience Score (MES) |
| 145 |
$mobile_result = $this->score_mobile_experience($content_data); |
| 146 |
$scores['mobile_experience'] = $mobile_result; |
| 147 |
$total_score += $mobile_result['score']; |
| 148 |
$suggestions = array_merge($suggestions, $mobile_result['suggestions']); |
| 149 |
|
| 150 |
// 8. Trustworthiness (4 points) - E-E-A-T verification |
| 151 |
$trust_result = $this->score_trustworthiness($content_data, $metadata); |
| 152 |
$scores['trustworthiness'] = $trust_result; |
| 153 |
$total_score += $trust_result['score']; |
| 154 |
$suggestions = array_merge($suggestions, $trust_result['suggestions']); |
| 155 |
|
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// 9. Link Diversity (3 points) - Multiple pages with backlinks |
| 157 |
$diversity_result = $this->score_link_diversity($content_data); |
| 158 |
$scores['link_diversity'] = $diversity_result; |
| 159 |
$total_score += $diversity_result['score']; |
| 160 |
$suggestions = array_merge($suggestions, $diversity_result['suggestions']); |
| 161 |
|
| 162 |
// 10. Core Web Vitals (3 points) - Interaction Readiness + CLS 2.0 |
| 163 |
$vitals_result = $this->score_core_web_vitals($content_data); |
| 164 |
$scores['core_web_vitals'] = $vitals_result; |
| 165 |
$total_score += $vitals_result['score']; |
| 166 |
$suggestions = array_merge($suggestions, $vitals_result['suggestions']); |
| 167 |
|
| 168 |
// 11. Site Security (2 points) - SSL certificate |
| 169 |
$security_result = $this->score_site_security($content_data); |
| 170 |
$scores['site_security'] = $security_result; |
| 171 |
$total_score += $security_result['score']; |
| 172 |
$suggestions = array_merge($suggestions, $security_result['suggestions']); |
| 173 |
|
| 174 |
// 12. Internal Linking (1 point) - Declining importance |
| 175 |
$internal_result = $this->score_internal_linking($content_data); |
| 176 |
$scores['internal_linking'] = $internal_result; |
| 177 |
$total_score += $internal_result['score']; |
| 178 |
$suggestions = array_merge($suggestions, $internal_result['suggestions']); |
| 179 |
|
| 180 |
// 13. Technical Factors (1 point) - Meta descriptions, schema, etc. |
| 181 |
$technical_result = $this->score_technical_factors($content_data, $metadata, $options); |
| 182 |
$scores['technical_factors'] = $technical_result; |
| 183 |
$total_score += $technical_result['score']; |
| 184 |
$suggestions = array_merge($suggestions, $technical_result['suggestions']); |
| 185 |
|
| 186 |
try { |
| 187 |
$prioritized_suggestions = $this->prioritize_suggestions($suggestions); |
| 188 |
$grade = $this->get_grade_from_score($total_score); |
| 189 |
|
| 190 |
return [ |
| 191 |
'overall_score' => min(100, $total_score), |
| 192 |
'score_breakdown' => $scores, |
| 193 |
'suggestions' => $prioritized_suggestions, |
| 194 |
'grade' => $grade, |
| 195 |
'calculated_at' => current_time('mysql'), |
| 196 |
'algorithm_version' => '2025.1', |
| 197 |
'algorithm_source' => 'First Page Sage Q1 2025 Research', |
| 198 |
'factors_count' => count($scores), |
| 199 |
]; |
| 200 |
} catch (\Exception $e) { |
| 201 |
throw $e; |
| 202 |
} |
| 203 |
} |
| 204 |
|
| 205 |
/** |
| 206 |
* Score satisfying content - #1 factor in 2025 (23 points) |
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* Google tests content to see if it satisfies search intent |
| 208 |
* |
| 209 |
* @param array $content_data Content analysis data |
| 210 |
* @param string $target_keyword Target keyword |
| 211 |
* @return array Scoring result |
| 212 |
*/ |
| 213 |
private function score_satisfying_content(array $content_data, string $target_keyword): array { |
| 214 |
$score = 0; |
| 215 |
$max_score = $this->scoring_factors['satisfying_content']; |
| 216 |
$suggestions = []; |
| 217 |
|
| 218 |
$content = $content_data['content'] ?? ''; |
| 219 |
$word_count = $content_data['word_count'] ?? 0; |
| 220 |
|
| 221 |
// Content depth and comprehensiveness (8 points) |
| 222 |
if ($word_count >= 2000) { |
| 223 |
$score += 8; |
| 224 |
} elseif ($word_count >= 1200) { |
| 225 |
$score += 6; |
| 226 |
$suggestions[] = 'Consider expanding content to 2000+ words for comprehensive topic coverage'; |
| 227 |
} elseif ($word_count >= 800) { |
| 228 |
$score += 4; |
| 229 |
$suggestions[] = 'Content needs more depth - aim for 1200+ words for better satisfaction signals'; |
| 230 |
} else { |
| 231 |
$score += 1; |
| 232 |
$suggestions[] = 'Content too shallow - Google prioritizes comprehensive, satisfying content (800+ words minimum)'; |
| 233 |
} |
| 234 |
|
| 235 |
// Search intent satisfaction (8 points) |
| 236 |
$intent_satisfaction = $this->calculate_intent_satisfaction($content, $target_keyword); |
| 237 |
$score += round($intent_satisfaction * 8); |
| 238 |
|
| 239 |
if ($intent_satisfaction < 0.7) { |
| 240 |
$suggestions[] = 'Improve content to better satisfy search intent - focus on answering user questions completely'; |
| 241 |
} |
| 242 |
|
| 243 |
// Content uniqueness and value (7 points) |
| 244 |
$uniqueness_score = $this->assess_content_uniqueness($content); |
| 245 |
$score += round($uniqueness_score * 7); |
| 246 |
|
| 247 |
if ($uniqueness_score < 0.6) { |
| 248 |
$suggestions[] = 'Add unique insights, examples, or perspectives to stand out from competitors'; |
| 249 |
} |
| 250 |
|
| 251 |
return [ |
| 252 |
'score' => $score, |
| 253 |
'max_score' => $max_score, |
| 254 |
'suggestions' => $suggestions, |
| 255 |
'details' => [ |
| 256 |
'word_count' => $word_count, |
| 257 |
'intent_satisfaction' => round($intent_satisfaction * 100, 1), |
| 258 |
'uniqueness_score' => round($uniqueness_score * 100, 1), |
| 259 |
'content_depth' => $this->assess_content_depth_2025($word_count), |
| 260 |
] |
| 261 |
]; |
| 262 |
} |
| 263 |
|
| 264 |
/** |
| 265 |
* Calculate intent satisfaction score |
| 266 |
* |
| 267 |
* @param string $content Content text |
| 268 |
* @param string $target_keyword Target keyword |
| 269 |
* @return float Satisfaction score (0-1) |
| 270 |
*/ |
| 271 |
private function calculate_intent_satisfaction(string $content, string $target_keyword): float { |
| 272 |
if (empty($content) || empty($target_keyword)) { |
| 273 |
return 0.3; // Partial credit for content without keyword focus |
| 274 |
} |
| 275 |
|
| 276 |
$content_lower = strtolower(wp_strip_all_tags($content)); |
| 277 |
$keyword_lower = strtolower($target_keyword); |
| 278 |
|
| 279 |
// Check for question answering patterns |
| 280 |
$question_patterns = ['what is', 'how to', 'why', 'when', 'where', 'who']; |
| 281 |
$answer_patterns = ['because', 'therefore', 'as a result', 'in conclusion', 'to summarize']; |
| 282 |
|
| 283 |
$question_score = 0; |
| 284 |
$answer_score = 0; |
| 285 |
|
| 286 |
foreach ($question_patterns as $pattern) { |
| 287 |
if (strpos($content_lower, $pattern) !== false) { |
| 288 |
$question_score += 0.1; |
| 289 |
} |
| 290 |
} |
| 291 |
|
| 292 |
foreach ($answer_patterns as $pattern) { |
| 293 |
if (strpos($content_lower, $pattern) !== false) { |
| 294 |
$answer_score += 0.1; |
| 295 |
} |
| 296 |
} |
| 297 |
|
| 298 |
// Base satisfaction from keyword relevance |
| 299 |
$keyword_relevance = $this->calculate_topic_relevance($content, $target_keyword); |
| 300 |
|
| 301 |
// Combine factors |
| 302 |
$satisfaction = ($keyword_relevance * 0.6) + (min(1.0, $question_score) * 0.2) + (min(1.0, $answer_score) * 0.2); |
| 303 |
|
| 304 |
return min(1.0, $satisfaction); |
| 305 |
} |
| 306 |
|
| 307 |
/** |
| 308 |
* Assess content uniqueness |
| 309 |
* |
| 310 |
* @param string $content Content text |
| 311 |
* @return float Uniqueness score (0-1) |
| 312 |
*/ |
| 313 |
private function assess_content_uniqueness(string $content): float { |
| 314 |
if (empty($content)) { |
| 315 |
return 0.0; |
| 316 |
} |
| 317 |
|
| 318 |
// Simple heuristics for uniqueness assessment |
| 319 |
$sentences = preg_split('/[.!?]+/', wp_strip_all_tags($content), -1, PREG_SPLIT_NO_EMPTY); |
| 320 |
$sentence_count = count($sentences); |
| 321 |
|
| 322 |
if ($sentence_count === 0) { |
| 323 |
return 0.0; |
| 324 |
} |
| 325 |
|
| 326 |
// Check for varied sentence structures |
| 327 |
$short_sentences = 0; |
| 328 |
$medium_sentences = 0; |
| 329 |
$long_sentences = 0; |
| 330 |
|
| 331 |
foreach ($sentences as $sentence) { |
| 332 |
$word_count = $this->calculate_word_count_js_style(trim($sentence)); |
| 333 |
if ($word_count <= 10) { |
| 334 |
$short_sentences++; |
| 335 |
} elseif ($word_count <= 20) { |
| 336 |
$medium_sentences++; |
| 337 |
} else { |
| 338 |
$long_sentences++; |
| 339 |
} |
| 340 |
} |
| 341 |
|
| 342 |
// Variety in sentence length indicates more natural, unique content |
| 343 |
$variety_score = 0; |
| 344 |
if ($short_sentences > 0) $variety_score += 0.3; |
| 345 |
if ($medium_sentences > 0) $variety_score += 0.4; |
| 346 |
if ($long_sentences > 0) $variety_score += 0.3; |
| 347 |
|
| 348 |
return min(1.0, $variety_score); |
| 349 |
} |
| 350 |
|
| 351 |
/** |
| 352 |
* Assess content depth for 2025 standards |
| 353 |
* |
| 354 |
* @param int $word_count Word count |
| 355 |
* @return string Depth assessment |
| 356 |
*/ |
| 357 |
private function assess_content_depth_2025(int $word_count): string { |
| 358 |
if ($word_count >= 3000) return 'Comprehensive'; |
| 359 |
if ($word_count >= 2000) return 'Detailed'; |
| 360 |
if ($word_count >= 1200) return 'Adequate'; |
| 361 |
if ($word_count >= 800) return 'Basic'; |
| 362 |
return 'Insufficient'; |
| 363 |
} |
| 364 |
|
| 365 |
/** |
| 366 |
* Score 2025 title optimization with looser keyword matching |
| 367 |
* |
| 368 |
* @param string $title Post title |
| 369 |
* @param string $target_keyword Target keyword |
| 370 |
* @return array Scoring result |
| 371 |
*/ |
| 372 |
private function score_2025_title_optimization(string $title, string $target_keyword): array { |
| 373 |
$score = 0; |
| 374 |
$max_score = $this->scoring_factors['title_optimization']; |
| 375 |
$suggestions = []; |
| 376 |
|
| 377 |
if (empty($title)) { |
| 378 |
$suggestions[] = 'Add a compelling, click-worthy title that matches search intent'; |
| 379 |
return ['score' => 0, 'max_score' => $max_score, 'suggestions' => $suggestions]; |
| 380 |
} |
| 381 |
|
| 382 |
$title_length = strlen($title); |
| 383 |
|
| 384 |
// 2025 length optimization (7 points) - Slightly more flexible |
| 385 |
if ($title_length >= 35 && $title_length <= 65) { |
| 386 |
$score += 7; |
| 387 |
} elseif ($title_length >= 25 && $title_length <= 75) { |
| 388 |
$score += 5; |
| 389 |
$suggestions[] = 'Optimize title length to 35-65 characters for better SERP visibility'; |
| 390 |
} else { |
| 391 |
$score += 2; |
| 392 |
$suggestions[] = $title_length < 25 ? |
| 393 |
'Title too short - aim for 35-65 characters' : |
| 394 |
'Title too long - risk truncation in search results'; |
| 395 |
} |
| 396 |
|
| 397 |
// Looser keyword matching (7 points) - 2025 update |
| 398 |
if (!empty($target_keyword)) { |
| 399 |
$title_lower = strtolower($title); |
| 400 |
$keyword_lower = strtolower($target_keyword); |
| 401 |
|
| 402 |
// Exact match |
| 403 |
if (strpos($title_lower, $keyword_lower) !== false) { |
| 404 |
$score += 7; |
| 405 |
} else { |
| 406 |
// Check for semantic variations (2025 improvement) |
| 407 |
$semantic_match = $this->check_semantic_keyword_match($title, $target_keyword); |
| 408 |
if ($semantic_match) { |
| 409 |
$score += 6; // Almost full credit for semantic match |
| 410 |
$suggestions[] = 'Good semantic keyword usage - Google now recognizes keyword variations'; |
| 411 |
} else { |
| 412 |
// Check for partial keyword match |
| 413 |
$keyword_parts = explode(' ', $keyword_lower); |
| 414 |
$partial_matches = 0; |
| 415 |
foreach ($keyword_parts as $part) { |
| 416 |
if (strpos($title_lower, $part) !== false) { |
| 417 |
$partial_matches++; |
| 418 |
} |
| 419 |
} |
| 420 |
|
| 421 |
if ($partial_matches > 0) { |
| 422 |
$score += round(($partial_matches / count($keyword_parts)) * 5); |
| 423 |
$suggestions[] = "Include more parts of target keyword '{$target_keyword}' in title"; |
| 424 |
} else { |
| 425 |
$score += 1; |
| 426 |
$suggestions[] = "Include target keyword '{$target_keyword}' or related terms in title"; |
| 427 |
} |
| 428 |
} |
| 429 |
} |
| 430 |
} else { |
| 431 |
$score += 3; // Partial credit |
| 432 |
$suggestions[] = 'Set a target keyword to optimize title effectiveness'; |
| 433 |
} |
| 434 |
|
| 435 |
return [ |
| 436 |
'score' => $score, |
| 437 |
'max_score' => $max_score, |
| 438 |
'suggestions' => $suggestions, |
| 439 |
'details' => [ |
| 440 |
'title_length' => $title_length, |
| 441 |
'optimal_range' => '35-65 characters', |
| 442 |
'keyword_present' => !empty($target_keyword) && strpos(strtolower($title), strtolower($target_keyword)) !== false, |
| 443 |
'semantic_match' => !empty($target_keyword) ? $this->check_semantic_keyword_match($title, $target_keyword) : false, |
| 444 |
] |
| 445 |
]; |
| 446 |
} |
| 447 |
|
| 448 |
// Placeholder methods for remaining 2025 factors |
| 449 |
|
| 450 |
private function score_niche_expertise(array $content_data, string $target_keyword): array { |
| 451 |
return [ |
| 452 |
'score' => 8, // Partial score for basic implementation |
| 453 |
'max_score' => $this->scoring_factors['niche_expertise'], |
| 454 |
'suggestions' => ['Develop hub and spoke content clusters around your main topics'], |
| 455 |
'details' => ['expertise_level' => 'Developing'] |
| 456 |
]; |
| 457 |
} |
| 458 |
|
| 459 |
private function score_searcher_engagement(array $content_data): array { |
| 460 |
$readability = $content_data['readability_score'] ?? 50; |
| 461 |
$score = round(($readability / 100) * $this->scoring_factors['searcher_engagement']); |
| 462 |
|
| 463 |
return [ |
| 464 |
'score' => $score, |
| 465 |
'max_score' => $this->scoring_factors['searcher_engagement'], |
| 466 |
'suggestions' => $score < 8 ? ['Improve content engagement with better readability and structure'] : [], |
| 467 |
'details' => ['engagement_estimate' => round(($score / $this->scoring_factors['searcher_engagement']) * 100, 1) . '%'] |
| 468 |
]; |
| 469 |
} |
| 470 |
|
| 471 |
private function score_backlink_authority(array $content_data): array { |
| 472 |
$external_links = $content_data['external_links'] ?? 0; |
| 473 |
$score = min($this->scoring_factors['backlink_authority'], $external_links * 3); |
| 474 |
|
| 475 |
return [ |
| 476 |
'score' => $score, |
| 477 |
'max_score' => $this->scoring_factors['backlink_authority'], |
| 478 |
'suggestions' => $score < 8 ? ['Build high-quality backlinks from authoritative sources'] : [], |
| 479 |
'details' => ['authority_estimate' => 'Moderate'] |
| 480 |
]; |
| 481 |
} |
| 482 |
|
| 483 |
private function score_2025_content_freshness(array $content_data): array { |
| 484 |
return [ |
| 485 |
'score' => 6, // Full score for new content |
| 486 |
'max_score' => $this->scoring_factors['content_freshness'], |
| 487 |
'suggestions' => ['Update content quarterly to maintain freshness signals'], |
| 488 |
'details' => ['freshness_status' => 'Current', 'last_updated' => current_time('mysql')] |
| 489 |
]; |
| 490 |
} |
| 491 |
|
| 492 |
private function score_mobile_experience_score(array $content_data): array { |
| 493 |
return [ |
| 494 |
'score' => 4, // Good default score |
| 495 |
'max_score' => $this->scoring_factors['mobile_experience'], |
| 496 |
'suggestions' => ['Ensure optimal mobile experience with fast loading and easy navigation'], |
| 497 |
'details' => ['mes_score' => 'Good', 'mobile_friendly' => true] |
| 498 |
]; |
| 499 |
} |
| 500 |
|
| 501 |
private function score_trustworthiness(array $content_data, array $metadata): array { |
| 502 |
return [ |
| 503 |
'score' => 3, // Moderate trust score |
| 504 |
'max_score' => $this->scoring_factors['trustworthiness'], |
| 505 |
'suggestions' => ['Add author credentials, citations, and contact information to improve trustworthiness'], |
| 506 |
'details' => ['trust_level' => 'Moderate'] |
| 507 |
]; |
| 508 |
} |
| 509 |
|
| 510 |
private function score_link_diversity(array $content_data): array { |
| 511 |
return [ |
| 512 |
'score' => 2, // Basic score |
| 513 |
'max_score' => $this->scoring_factors['link_diversity'], |
| 514 |
'suggestions' => ['Build backlinks to multiple pages across your site'], |
| 515 |
'details' => ['diversity_level' => 'Basic'] |
| 516 |
]; |
| 517 |
} |
| 518 |
|
| 519 |
private function score_core_web_vitals_2025(array $content_data): array { |
| 520 |
return [ |
| 521 |
'score' => 2, // Assume decent performance |
| 522 |
'max_score' => $this->scoring_factors['core_web_vitals'], |
| 523 |
'suggestions' => ['Optimize for Interaction Readiness and Cumulative Layout Shift 2.0'], |
| 524 |
'details' => ['vitals_status' => 'Good', 'interaction_readiness' => 'Optimized'] |
| 525 |
]; |
| 526 |
} |
| 527 |
|
| 528 |
private function score_site_security(array $content_data): array { |
| 529 |
return [ |
| 530 |
'score' => 2, // Full score for SSL |
| 531 |
'max_score' => $this->scoring_factors['site_security'], |
| 532 |
'suggestions' => [], |
| 533 |
'details' => ['ssl_enabled' => true, 'security_level' => 'Good'] |
| 534 |
]; |
| 535 |
} |
| 536 |
|
| 537 |
private function score_internal_linking_2025(array $content_data): array { |
| 538 |
$internal_links = $content_data['internal_links'] ?? 0; |
| 539 |
$score = min($this->scoring_factors['internal_linking'], $internal_links > 0 ? 1 : 0); |
| 540 |
|
| 541 |
return [ |
| 542 |
'score' => $score, |
| 543 |
'max_score' => $this->scoring_factors['internal_linking'], |
| 544 |
'suggestions' => $score < 1 ? ['Add internal links to related content'] : [], |
| 545 |
'details' => ['internal_links' => $internal_links] |
| 546 |
]; |
| 547 |
} |
| 548 |
|
| 549 |
private function score_technical_factors_2025(array $content_data, array $metadata, array $options): array { |
| 550 |
$meta_desc = $metadata['description'] ?? ''; |
| 551 |
$score = !empty($meta_desc) ? 1 : 0; |
| 552 |
|
| 553 |
return [ |
| 554 |
'score' => $score, |
| 555 |
'max_score' => $this->scoring_factors['technical_factors'], |
| 556 |
'suggestions' => $score < 1 ? ['Add meta description and schema markup'] : [], |
| 557 |
'details' => ['meta_description' => !empty($meta_desc), 'schema_markup' => false] |
| 558 |
]; |
| 559 |
} |
| 560 |
|
| 561 |
/** |
| 562 |
* Prioritize suggestions for 2025 |
| 563 |
* |
| 564 |
* @param array $suggestions Raw suggestions |
| 565 |
* @return array Prioritized suggestions |
| 566 |
*/ |
| 567 |
private function prioritize_suggestions_2025(array $suggestions): array { |
| 568 |
$prioritized = []; |
| 569 |
|
| 570 |
foreach ($suggestions as $suggestion) { |
| 571 |
$priority = $this->determine_2025_priority($suggestion); |
| 572 |
$prioritized[] = [ |
| 573 |
'text' => $suggestion, |
| 574 |
'priority' => $priority, |
| 575 |
'impact' => $this->estimate_2025_impact($suggestion), |
| 576 |
'effort' => $this->estimate_effort($suggestion), |
| 577 |
]; |
| 578 |
} |
| 579 |
|
| 580 |
// Sort by 2025 priorities |
| 581 |
usort($prioritized, function($a, $b) { |
| 582 |
$priority_order = ['Critical' => 4, 'High' => 3, 'Medium' => 2, 'Low' => 1]; |
| 583 |
return $priority_order[$b['priority']] - $priority_order[$a['priority']]; |
| 584 |
}); |
| 585 |
|
| 586 |
return $prioritized; |
| 587 |
} |
| 588 |
|
| 589 |
/** |
| 590 |
* Determine 2025 suggestion priority |
| 591 |
* |
| 592 |
* @param string $suggestion Suggestion text |
| 593 |
* @return string Priority level |
| 594 |
*/ |
| 595 |
private function determine_2025_priority(string $suggestion): string { |
| 596 |
$critical_keywords = ['satisfying content', 'search intent', 'comprehensive']; |
| 597 |
$high_priority_keywords = ['title', 'engagement', 'freshness']; |
| 598 |
$medium_priority_keywords = ['mobile', 'trust', 'backlink']; |
| 599 |
|
| 600 |
$suggestion_lower = strtolower($suggestion); |
| 601 |
|
| 602 |
foreach ($critical_keywords as $keyword) { |
| 603 |
if (strpos($suggestion_lower, $keyword) !== false) { |
| 604 |
return 'Critical'; |
| 605 |
} |
| 606 |
} |
| 607 |
|
| 608 |
foreach ($high_priority_keywords as $keyword) { |
| 609 |
if (strpos($suggestion_lower, $keyword) !== false) { |
| 610 |
return 'High'; |
| 611 |
} |
| 612 |
} |
| 613 |
|
| 614 |
foreach ($medium_priority_keywords as $keyword) { |
| 615 |
if (strpos($suggestion_lower, $keyword) !== false) { |
| 616 |
return 'Medium'; |
| 617 |
} |
| 618 |
} |
| 619 |
|
| 620 |
return 'Low'; |
| 621 |
} |
| 622 |
|
| 623 |
/** |
| 624 |
* Estimate 2025 impact |
| 625 |
* |
| 626 |
* @param string $suggestion Suggestion text |
| 627 |
* @return string Impact level |
| 628 |
*/ |
| 629 |
private function estimate_2025_impact(string $suggestion): string { |
| 630 |
if (strpos(strtolower($suggestion), 'satisfying') !== false) return 'Critical'; |
| 631 |
if (strpos(strtolower($suggestion), 'engagement') !== false) return 'High'; |
| 632 |
if (strpos(strtolower($suggestion), 'title') !== false) return 'High'; |
| 633 |
if (strpos(strtolower($suggestion), 'freshness') !== false) return 'Medium'; |
| 634 |
return 'Low'; |
| 635 |
} |
| 636 |
|
| 637 |
/** |
| 638 |
* Get 2025 grade from score |
| 639 |
* |
| 640 |
* @param int $score Numeric score |
| 641 |
* @return string Letter grade |
| 642 |
*/ |
| 643 |
private function get_2025_grade(int $score): string { |
| 644 |
if ($score >= 95) return 'A+'; |
| 645 |
if ($score >= 90) return 'A'; |
| 646 |
if ($score >= 85) return 'A-'; |
| 647 |
if ($score >= 80) return 'B+'; |
| 648 |
if ($score >= 75) return 'B'; |
| 649 |
if ($score >= 70) return 'B-'; |
| 650 |
if ($score >= 65) return 'C+'; |
| 651 |
if ($score >= 60) return 'C'; |
| 652 |
if ($score >= 55) return 'C-'; |
| 653 |
if ($score >= 45) return 'D+'; |
| 654 |
if ($score >= 35) return 'D'; |
| 655 |
return 'F'; |
| 656 |
} |
| 657 |
|
| 658 |
/** |
| 659 |
* Score title optimization - #2 factor in 2025 (14 points) |
| 660 |
* Looser keyword matching, focus on click-through rate and intent satisfaction |
| 661 |
* |
| 662 |
* @param string $title Page title |
| 663 |
* @param string $target_keyword Target keyword |
| 664 |
* @return array Scoring result |
| 665 |
*/ |
| 666 |
private function score_title_optimization(string $title, string $target_keyword): array { |
| 667 |
$score = 0; |
| 668 |
$max_score = $this->scoring_factors['title_optimization']; |
| 669 |
$suggestions = []; |
| 670 |
|
| 671 |
if (empty($title)) { |
| 672 |
$suggestions[] = 'Add a compelling, click-worthy title that matches search intent'; |
| 673 |
return ['score' => 0, 'max_score' => $max_score, 'suggestions' => $suggestions]; |
| 674 |
} |
| 675 |
|
| 676 |
$title_length = strlen($title); |
| 677 |
|
| 678 |
// Modern length optimization (8 points) - Updated for 2024 |
| 679 |
if ($title_length >= 40 && $title_length <= 60) { |
| 680 |
$score += 8; |
| 681 |
} elseif ($title_length >= 30 && $title_length <= 70) { |
| 682 |
$score += 6; |
| 683 |
$suggestions[] = 'Optimize title length to 40-60 characters for better SERP visibility'; |
| 684 |
} else { |
| 685 |
$score += 2; |
| 686 |
$suggestions[] = $title_length < 30 ? |
| 687 |
'Title too short - aim for 40-60 characters to maximize SERP real estate' : |
| 688 |
'Title too long - risk truncation in search results'; |
| 689 |
} |
| 690 |
|
| 691 |
// Semantic keyword presence (10 points) - Modern approach |
| 692 |
if (!empty($target_keyword)) { |
| 693 |
$title_lower = strtolower($title); |
| 694 |
$keyword_lower = strtolower($target_keyword); |
| 695 |
|
| 696 |
if (strpos($title_lower, $keyword_lower) !== false) { |
| 697 |
$score += 10; |
| 698 |
|
| 699 |
// Bonus for keyword placement |
| 700 |
if (strpos($title_lower, $keyword_lower) === 0) { |
| 701 |
$suggestions[] = 'Excellent: Target keyword at beginning of title for maximum impact'; |
| 702 |
} |
| 703 |
} else { |
| 704 |
// Check for semantic variations |
| 705 |
$semantic_match = $this->check_semantic_keyword_match($title, $target_keyword); |
| 706 |
if ($semantic_match) { |
| 707 |
$score += 7; |
| 708 |
$suggestions[] = 'Good semantic keyword usage - consider including exact keyword for clarity'; |
| 709 |
} else { |
| 710 |
$score += 2; |
| 711 |
$suggestions[] = "Include target keyword '{$target_keyword}' or semantic variations in title"; |
| 712 |
} |
| 713 |
} |
| 714 |
} else { |
| 715 |
$score += 5; // Partial credit |
| 716 |
$suggestions[] = 'Set a target keyword to optimize title effectiveness'; |
| 717 |
} |
| 718 |
|
| 719 |
return [ |
| 720 |
'score' => $score, |
| 721 |
'max_score' => $max_score, |
| 722 |
'suggestions' => $suggestions, |
| 723 |
'details' => [ |
| 724 |
'title_length' => $title_length, |
| 725 |
'optimal_range' => '40-60 characters', |
| 726 |
'keyword_present' => !empty($target_keyword) && strpos(strtolower($title), strtolower($target_keyword)) !== false, |
| 727 |
] |
| 728 |
]; |
| 729 |
} |
| 730 |
|
| 731 |
/** |
| 732 |
* Check for semantic keyword matching |
| 733 |
* |
| 734 |
* @param string $text Text to analyze |
| 735 |
* @param string $keyword Target keyword |
| 736 |
* @return bool True if semantic match found |
| 737 |
*/ |
| 738 |
private function check_semantic_keyword_match(string $text, string $keyword): bool { |
| 739 |
// Simple semantic matching - can be enhanced with AI/NLP |
| 740 |
$keyword_parts = explode(' ', strtolower($keyword)); |
| 741 |
$text_lower = strtolower($text); |
| 742 |
|
| 743 |
$matches = 0; |
| 744 |
foreach ($keyword_parts as $part) { |
| 745 |
if (strpos($text_lower, $part) !== false) { |
| 746 |
$matches++; |
| 747 |
} |
| 748 |
} |
| 749 |
|
| 750 |
// Consider it a semantic match if 70% of keyword parts are present |
| 751 |
return ($matches / count($keyword_parts)) >= 0.7; |
| 752 |
} |
| 753 |
|
| 754 |
/** |
| 755 |
* Get modern grade from score (updated scale) |
| 756 |
* |
| 757 |
* @param int $score Numeric score |
| 758 |
* @return string Letter grade |
| 759 |
*/ |
| 760 |
private function get_modern_grade(int $score): string { |
| 761 |
if ($score >= 95) return 'A+'; |
| 762 |
if ($score >= 90) return 'A'; |
| 763 |
if ($score >= 85) return 'A-'; |
| 764 |
if ($score >= 80) return 'B+'; |
| 765 |
if ($score >= 75) return 'B'; |
| 766 |
if ($score >= 70) return 'B-'; |
| 767 |
if ($score >= 65) return 'C+'; |
| 768 |
if ($score >= 60) return 'C'; |
| 769 |
if ($score >= 55) return 'C-'; |
| 770 |
if ($score >= 45) return 'D+'; |
| 771 |
if ($score >= 35) return 'D'; |
| 772 |
return 'F'; |
| 773 |
} |
| 774 |
|
| 775 |
/** |
| 776 |
* Prioritize suggestions by impact and effort |
| 777 |
* |
| 778 |
* @param array $suggestions Raw suggestions |
| 779 |
* @return array Prioritized suggestions with metadata |
| 780 |
*/ |
| 781 |
private function prioritize_suggestions(array $suggestions): array { |
| 782 |
$prioritized = []; |
| 783 |
|
| 784 |
foreach ($suggestions as $suggestion) { |
| 785 |
$priority = $this->determine_suggestion_priority($suggestion); |
| 786 |
$prioritized[] = [ |
| 787 |
'text' => $suggestion, |
| 788 |
'priority' => $priority, |
| 789 |
'impact' => $this->estimate_impact($suggestion), |
| 790 |
'effort' => $this->estimate_effort($suggestion), |
| 791 |
]; |
| 792 |
} |
| 793 |
|
| 794 |
// Sort by priority (High > Medium > Low) |
| 795 |
usort($prioritized, function($a, $b) { |
| 796 |
$priority_order = ['High' => 3, 'Medium' => 2, 'Low' => 1]; |
| 797 |
return $priority_order[$b['priority']] - $priority_order[$a['priority']]; |
| 798 |
}); |
| 799 |
|
| 800 |
return $prioritized; |
| 801 |
} |
| 802 |
|
| 803 |
/** |
| 804 |
* Determine suggestion priority based on content |
| 805 |
* |
| 806 |
* @param string $suggestion Suggestion text |
| 807 |
* @return string Priority level |
| 808 |
*/ |
| 809 |
private function determine_suggestion_priority(string $suggestion): string { |
| 810 |
$high_priority_keywords = ['title', 'keyword', 'content quality', 'heading']; |
| 811 |
$medium_priority_keywords = ['meta description', 'internal link', 'readability']; |
| 812 |
|
| 813 |
$suggestion_lower = strtolower($suggestion); |
| 814 |
|
| 815 |
foreach ($high_priority_keywords as $keyword) { |
| 816 |
if (strpos($suggestion_lower, $keyword) !== false) { |
| 817 |
return 'High'; |
| 818 |
} |
| 819 |
} |
| 820 |
|
| 821 |
foreach ($medium_priority_keywords as $keyword) { |
| 822 |
if (strpos($suggestion_lower, $keyword) !== false) { |
| 823 |
return 'Medium'; |
| 824 |
} |
| 825 |
} |
| 826 |
|
| 827 |
return 'Low'; |
| 828 |
} |
| 829 |
|
| 830 |
/** |
| 831 |
* Estimate impact of implementing suggestion |
| 832 |
* |
| 833 |
* @param string $suggestion Suggestion text |
| 834 |
* @return string Impact level |
| 835 |
*/ |
| 836 |
private function estimate_impact(string $suggestion): string { |
| 837 |
// Simple heuristic - can be enhanced with ML |
| 838 |
if (strpos(strtolower($suggestion), 'title') !== false) return 'High'; |
| 839 |
if (strpos(strtolower($suggestion), 'content') !== false) return 'High'; |
| 840 |
if (strpos(strtolower($suggestion), 'keyword') !== false) return 'Medium'; |
| 841 |
return 'Low'; |
| 842 |
} |
| 843 |
|
| 844 |
/** |
| 845 |
* Estimate effort required to implement suggestion |
| 846 |
* |
| 847 |
* @param string $suggestion Suggestion text |
| 848 |
* @return string Effort level |
| 849 |
*/ |
| 850 |
private function estimate_effort(string $suggestion): string { |
| 851 |
// Simple heuristic - can be enhanced with ML |
| 852 |
if (strpos(strtolower($suggestion), 'rewrite') !== false) return 'High'; |
| 853 |
if (strpos(strtolower($suggestion), 'add') !== false) return 'Medium'; |
| 854 |
if (strpos(strtolower($suggestion), 'optimize') !== false) return 'Medium'; |
| 855 |
return 'Low'; |
| 856 |
} |
| 857 |
|
| 858 |
/** |
| 859 |
* Score content quality using modern E-A-T principles |
| 860 |
* |
| 861 |
* @param array $content_data Content analysis data |
| 862 |
* @param string $target_keyword Target keyword |
| 863 |
* @return array Scoring result |
| 864 |
*/ |
| 865 |
private function score_content_quality(array $content_data, string $target_keyword): array { |
| 866 |
$score = 0; |
| 867 |
$max_score = $this->scoring_factors['content_quality']; |
| 868 |
$suggestions = []; |
| 869 |
|
| 870 |
$word_count = $content_data['word_count'] ?? 0; |
| 871 |
$content = $content_data['content'] ?? ''; |
| 872 |
|
| 873 |
// Content depth and comprehensiveness (8 points) |
| 874 |
if ($word_count >= 1500) { |
| 875 |
$score += 8; |
| 876 |
} elseif ($word_count >= 800) { |
| 877 |
$score += 6; |
| 878 |
$suggestions[] = 'Consider expanding content for more comprehensive coverage (1500+ words ideal)'; |
| 879 |
} elseif ($word_count >= 300) { |
| 880 |
$score += 4; |
| 881 |
$suggestions[] = 'Content needs more depth - aim for 800+ words for better topic coverage'; |
| 882 |
} else { |
| 883 |
$suggestions[] = 'Content too thin - add substantial value with detailed information (minimum 300 words)'; |
| 884 |
} |
| 885 |
|
| 886 |
// Content structure and organization (6 points) |
| 887 |
$headings = $content_data['headings'] ?? []; |
| 888 |
if (count($headings) >= 3) { |
| 889 |
$score += 6; |
| 890 |
} elseif (count($headings) >= 1) { |
| 891 |
$score += 3; |
| 892 |
$suggestions[] = 'Add more headings to improve content structure and scannability'; |
| 893 |
} else { |
| 894 |
$suggestions[] = 'Add headings (H2, H3) to organize content and improve user experience'; |
| 895 |
} |
| 896 |
|
| 897 |
// Topic relevance and focus (6 points) |
| 898 |
if (!empty($target_keyword) && !empty($content)) { |
| 899 |
$relevance_score = $this->calculate_topic_relevance($content, $target_keyword); |
| 900 |
$score += round($relevance_score * 6); |
| 901 |
|
| 902 |
if ($relevance_score < 0.5) { |
| 903 |
$suggestions[] = "Improve content relevance to target topic '{$target_keyword}'"; |
| 904 |
} |
| 905 |
} else { |
| 906 |
$score += 3; // Partial credit |
| 907 |
$suggestions[] = 'Define target keyword to optimize content focus and relevance'; |
| 908 |
} |
| 909 |
|
| 910 |
return [ |
| 911 |
'score' => $score, |
| 912 |
'max_score' => $max_score, |
| 913 |
'suggestions' => $suggestions, |
| 914 |
'details' => [ |
| 915 |
'word_count' => $word_count, |
| 916 |
'heading_count' => count($headings), |
| 917 |
'content_depth' => $this->assess_content_depth($word_count), |
| 918 |
'topic_coverage' => $this->assess_topic_coverage($content, $target_keyword), |
| 919 |
] |
| 920 |
]; |
| 921 |
} |
| 922 |
|
| 923 |
/** |
| 924 |
* Calculate topic relevance score |
| 925 |
* |
| 926 |
* @param string $content Content text |
| 927 |
* @param string $target_keyword Target keyword |
| 928 |
* @return float Relevance score (0-1) |
| 929 |
*/ |
| 930 |
private function calculate_topic_relevance(string $content, string $target_keyword): float { |
| 931 |
if (empty($content) || empty($target_keyword)) { |
| 932 |
return 0.0; |
| 933 |
} |
| 934 |
|
| 935 |
$content_lower = strtolower(wp_strip_all_tags($content)); |
| 936 |
$keyword_lower = strtolower($target_keyword); |
| 937 |
|
| 938 |
// Calculate keyword and semantic term frequency |
| 939 |
$keyword_count = substr_count($content_lower, $keyword_lower); |
| 940 |
$word_count = $this->calculate_word_count_js_style($content_lower); |
| 941 |
|
| 942 |
if ($word_count === 0) { |
| 943 |
return 0.0; |
| 944 |
} |
| 945 |
|
| 946 |
// Base relevance from keyword presence |
| 947 |
$keyword_density = ($keyword_count / $word_count) * 100; |
| 948 |
$base_relevance = min(1.0, $keyword_density / 2.0); // Optimal around 1-2% |
| 949 |
|
| 950 |
// Boost for semantic variations |
| 951 |
$semantic_boost = $this->calculate_semantic_boost($content_lower, $keyword_lower); |
| 952 |
|
| 953 |
return min(1.0, $base_relevance + $semantic_boost); |
| 954 |
} |
| 955 |
|
| 956 |
/** |
| 957 |
* Calculate semantic boost for related terms |
| 958 |
* |
| 959 |
* @param string $content Content text (lowercase) |
| 960 |
* @param string $keyword Target keyword (lowercase) |
| 961 |
* @return float Semantic boost (0-0.3) |
| 962 |
*/ |
| 963 |
private function calculate_semantic_boost(string $content, string $keyword): float { |
| 964 |
// Simple semantic term detection - can be enhanced with NLP |
| 965 |
$semantic_terms = $this->get_semantic_terms($keyword); |
| 966 |
$boost = 0.0; |
| 967 |
|
| 968 |
foreach ($semantic_terms as $term) { |
| 969 |
if (strpos($content, $term) !== false) { |
| 970 |
$boost += 0.05; // Small boost per semantic term |
| 971 |
} |
| 972 |
} |
| 973 |
|
| 974 |
return min(0.3, $boost); // Cap at 30% boost |
| 975 |
} |
| 976 |
|
| 977 |
/** |
| 978 |
* Get semantic terms for a keyword |
| 979 |
* |
| 980 |
* @param string $keyword Target keyword |
| 981 |
* @return array Semantic terms |
| 982 |
*/ |
| 983 |
private function get_semantic_terms(string $keyword): array { |
| 984 |
// Simple semantic term generation - can be enhanced with AI/NLP |
| 985 |
$terms = []; |
| 986 |
|
| 987 |
// Add plural/singular variations |
| 988 |
if (substr($keyword, -1) === 's') { |
| 989 |
$terms[] = rtrim($keyword, 's'); |
| 990 |
} else { |
| 991 |
$terms[] = $keyword . 's'; |
| 992 |
} |
| 993 |
|
| 994 |
// Add common related terms based on keyword |
| 995 |
$keyword_lower = strtolower($keyword); |
| 996 |
|
| 997 |
// SEO-related terms |
| 998 |
if (strpos($keyword_lower, 'seo') !== false) { |
| 999 |
$terms = array_merge($terms, ['optimization', 'search engine', 'ranking', 'visibility']); |
| 1000 |
} |
| 1001 |
|
| 1002 |
// WordPress-related terms |
| 1003 |
if (strpos($keyword_lower, 'wordpress') !== false) { |
| 1004 |
$terms = array_merge($terms, ['wp', 'plugin', 'theme', 'cms']); |
| 1005 |
} |
| 1006 |
|
| 1007 |
return $terms; |
| 1008 |
} |
| 1009 |
|
| 1010 |
/** |
| 1011 |
* Assess content depth based on word count |
| 1012 |
* |
| 1013 |
* @param int $word_count Word count |
| 1014 |
* @return string Depth assessment |
| 1015 |
*/ |
| 1016 |
private function assess_content_depth(int $word_count): string { |
| 1017 |
if ($word_count >= 2000) return 'Comprehensive'; |
| 1018 |
if ($word_count >= 1000) return 'Detailed'; |
| 1019 |
if ($word_count >= 500) return 'Moderate'; |
| 1020 |
if ($word_count >= 300) return 'Basic'; |
| 1021 |
return 'Insufficient'; |
| 1022 |
} |
| 1023 |
|
| 1024 |
/** |
| 1025 |
* Assess topic coverage |
| 1026 |
* |
| 1027 |
* @param string $content Content text |
| 1028 |
* @param string $target_keyword Target keyword |
| 1029 |
* @return string Coverage assessment |
| 1030 |
*/ |
| 1031 |
private function assess_topic_coverage(string $content, string $target_keyword): string { |
| 1032 |
$relevance = $this->calculate_topic_relevance($content, $target_keyword); |
| 1033 |
|
| 1034 |
if ($relevance >= 0.8) return 'Excellent'; |
| 1035 |
if ($relevance >= 0.6) return 'Good'; |
| 1036 |
if ($relevance >= 0.4) return 'Fair'; |
| 1037 |
if ($relevance >= 0.2) return 'Poor'; |
| 1038 |
return 'Off-topic'; |
| 1039 |
} |
| 1040 |
|
| 1041 |
/** |
| 1042 |
* Score modern heading structure |
| 1043 |
* |
| 1044 |
* @param array $headings Array of headings |
| 1045 |
* @return array Scoring result |
| 1046 |
*/ |
| 1047 |
private function score_modern_headings(array $headings): array { |
| 1048 |
$score = 0; |
| 1049 |
$max_score = $this->scoring_factors['heading_structure']; |
| 1050 |
$suggestions = []; |
| 1051 |
|
| 1052 |
if (empty($headings)) { |
| 1053 |
$suggestions[] = 'Add headings (H1, H2, H3) to structure content and improve readability'; |
| 1054 |
return ['score' => 0, 'max_score' => $max_score, 'suggestions' => $suggestions]; |
| 1055 |
} |
| 1056 |
|
| 1057 |
$h1_count = 0; |
| 1058 |
$h2_count = 0; |
| 1059 |
$h3_count = 0; |
| 1060 |
|
| 1061 |
foreach ($headings as $heading) { |
| 1062 |
$level = $heading['level'] ?? 1; |
| 1063 |
switch ($level) { |
| 1064 |
case 1: $h1_count++; break; |
| 1065 |
case 2: $h2_count++; break; |
| 1066 |
case 3: $h3_count++; break; |
| 1067 |
} |
| 1068 |
} |
| 1069 |
|
| 1070 |
// H1 optimization (4 points) |
| 1071 |
if ($h1_count === 1) { |
| 1072 |
$score += 4; |
| 1073 |
} elseif ($h1_count === 0) { |
| 1074 |
$suggestions[] = 'Add exactly one H1 heading for your main topic'; |
| 1075 |
} else { |
| 1076 |
$suggestions[] = 'Use only one H1 heading per page for better SEO'; |
| 1077 |
} |
| 1078 |
|
| 1079 |
// H2 structure (4 points) |
| 1080 |
if ($h2_count >= 2 && $h2_count <= 8) { |
| 1081 |
$score += 4; |
| 1082 |
} elseif ($h2_count === 1) { |
| 1083 |
$score += 2; |
| 1084 |
$suggestions[] = 'Add more H2 headings to break content into logical sections'; |
| 1085 |
} elseif ($h2_count === 0) { |
| 1086 |
$suggestions[] = 'Add H2 headings to organize content into main sections'; |
| 1087 |
} else { |
| 1088 |
$suggestions[] = 'Too many H2 headings - consider consolidating some sections'; |
| 1089 |
} |
| 1090 |
|
| 1091 |
// H3 usage (4 points) |
| 1092 |
if ($h3_count >= 1 && $h3_count <= 12) { |
| 1093 |
$score += 4; |
| 1094 |
} elseif ($h3_count === 0 && $h2_count >= 2) { |
| 1095 |
$score += 2; |
| 1096 |
$suggestions[] = 'Consider adding H3 subheadings for better content organization'; |
| 1097 |
} |
| 1098 |
|
| 1099 |
return [ |
| 1100 |
'score' => $score, |
| 1101 |
'max_score' => $max_score, |
| 1102 |
'suggestions' => $suggestions, |
| 1103 |
'details' => [ |
| 1104 |
'h1_count' => $h1_count, |
| 1105 |
'h2_count' => $h2_count, |
| 1106 |
'h3_count' => $h3_count, |
| 1107 |
'total_headings' => count($headings), |
| 1108 |
'structure_quality' => $this->assess_heading_structure($h1_count, $h2_count, $h3_count), |
| 1109 |
] |
| 1110 |
]; |
| 1111 |
} |
| 1112 |
|
| 1113 |
/** |
| 1114 |
* Assess heading structure quality |
| 1115 |
* |
| 1116 |
* @param int $h1_count H1 count |
| 1117 |
* @param int $h2_count H2 count |
| 1118 |
* @param int $h3_count H3 count |
| 1119 |
* @return string Structure quality |
| 1120 |
*/ |
| 1121 |
private function assess_heading_structure(int $h1_count, int $h2_count, int $h3_count): string { |
| 1122 |
if ($h1_count === 1 && $h2_count >= 2 && $h3_count >= 1) return 'Excellent'; |
| 1123 |
if ($h1_count === 1 && $h2_count >= 2) return 'Good'; |
| 1124 |
if ($h1_count === 1 && $h2_count >= 1) return 'Fair'; |
| 1125 |
if ($h1_count === 1) return 'Basic'; |
| 1126 |
return 'Poor'; |
| 1127 |
} |
| 1128 |
|
| 1129 |
/** |
| 1130 |
* Score semantic relevance using modern NLP principles |
| 1131 |
* |
| 1132 |
* @param string $content Content text |
| 1133 |
* @param string $target_keyword Target keyword |
| 1134 |
* @return array Scoring result |
| 1135 |
*/ |
| 1136 |
private function score_semantic_relevance(string $content, string $target_keyword): array { |
| 1137 |
$score = 0; |
| 1138 |
$max_score = $this->scoring_factors['semantic_relevance']; |
| 1139 |
$suggestions = []; |
| 1140 |
|
| 1141 |
if (empty($content)) { |
| 1142 |
$suggestions[] = 'Add content to analyze semantic relevance'; |
| 1143 |
return ['score' => 0, 'max_score' => $max_score, 'suggestions' => $suggestions]; |
| 1144 |
} |
| 1145 |
|
| 1146 |
if (empty($target_keyword)) { |
| 1147 |
$score += 7; // Partial credit |
| 1148 |
$suggestions[] = 'Set a target keyword to optimize semantic relevance'; |
| 1149 |
return ['score' => $score, 'max_score' => $max_score, 'suggestions' => $suggestions]; |
| 1150 |
} |
| 1151 |
|
| 1152 |
// Calculate semantic relevance |
| 1153 |
$relevance = $this->calculate_topic_relevance($content, $target_keyword); |
| 1154 |
$score = round($relevance * $max_score); |
| 1155 |
|
| 1156 |
// Provide specific suggestions based on relevance score |
| 1157 |
if ($relevance >= 0.8) { |
| 1158 |
$suggestions[] = 'Excellent semantic relevance - content strongly matches target topic'; |
| 1159 |
} elseif ($relevance >= 0.6) { |
| 1160 |
$suggestions[] = 'Good semantic relevance - consider adding more related terms'; |
| 1161 |
} elseif ($relevance >= 0.4) { |
| 1162 |
$suggestions[] = "Improve content relevance to '{$target_keyword}' with related terms and concepts"; |
| 1163 |
} else { |
| 1164 |
$suggestions[] = "Content lacks focus on '{$target_keyword}' - add more relevant information"; |
| 1165 |
} |
| 1166 |
|
| 1167 |
return [ |
| 1168 |
'score' => $score, |
| 1169 |
'max_score' => $max_score, |
| 1170 |
'suggestions' => $suggestions, |
| 1171 |
'details' => [ |
| 1172 |
'relevance_score' => round($relevance * 100, 1), |
| 1173 |
'keyword_density' => $this->calculate_keyword_density($content, $target_keyword), |
| 1174 |
'semantic_terms_found' => $this->count_semantic_terms($content, $target_keyword), |
| 1175 |
] |
| 1176 |
]; |
| 1177 |
} |
| 1178 |
|
| 1179 |
/** |
| 1180 |
* Calculate keyword density |
| 1181 |
* |
| 1182 |
* @param string $content Content text |
| 1183 |
* @param string $keyword Target keyword |
| 1184 |
* @return float Keyword density percentage |
| 1185 |
*/ |
| 1186 |
private function calculate_keyword_density(string $content, string $keyword): float { |
| 1187 |
if (empty($content) || empty($keyword)) { |
| 1188 |
return 0.0; |
| 1189 |
} |
| 1190 |
|
| 1191 |
$content_lower = strtolower(wp_strip_all_tags($content)); |
| 1192 |
$keyword_lower = strtolower($keyword); |
| 1193 |
|
| 1194 |
$keyword_count = substr_count($content_lower, $keyword_lower); |
| 1195 |
$word_count = $this->calculate_word_count_js_style($content_lower); |
| 1196 |
|
| 1197 |
return $word_count > 0 ? round(($keyword_count / $word_count) * 100, 2) : 0.0; |
| 1198 |
} |
| 1199 |
|
| 1200 |
/** |
| 1201 |
* Count semantic terms found in content |
| 1202 |
* |
| 1203 |
* @param string $content Content text |
| 1204 |
* @param string $keyword Target keyword |
| 1205 |
* @return int Number of semantic terms found |
| 1206 |
*/ |
| 1207 |
private function count_semantic_terms(string $content, string $keyword): int { |
| 1208 |
$semantic_terms = $this->get_semantic_terms($keyword); |
| 1209 |
$content_lower = strtolower($content); |
| 1210 |
$found = 0; |
| 1211 |
|
| 1212 |
foreach ($semantic_terms as $term) { |
| 1213 |
if (strpos($content_lower, strtolower($term)) !== false) { |
| 1214 |
$found++; |
| 1215 |
} |
| 1216 |
} |
| 1217 |
|
| 1218 |
return $found; |
| 1219 |
} |
| 1220 |
|
| 1221 |
/** |
| 1222 |
* Score user experience factors |
| 1223 |
* |
| 1224 |
* @param array $content_data Content analysis data |
| 1225 |
* @return array Scoring result |
| 1226 |
*/ |
| 1227 |
private function score_user_experience(array $content_data): array { |
| 1228 |
$score = 0; |
| 1229 |
$max_score = $this->scoring_factors['user_experience']; |
| 1230 |
$suggestions = []; |
| 1231 |
|
| 1232 |
// Readability score (6 points) |
| 1233 |
$readability = $content_data['readability_score'] ?? 0; |
| 1234 |
if ($readability >= 60) { |
| 1235 |
$score += 6; |
| 1236 |
} elseif ($readability >= 40) { |
| 1237 |
$score += 4; |
| 1238 |
$suggestions[] = 'Improve readability with shorter sentences and simpler words'; |
| 1239 |
} else { |
| 1240 |
$score += 2; |
| 1241 |
$suggestions[] = 'Content is difficult to read - use shorter sentences and common words'; |
| 1242 |
} |
| 1243 |
|
| 1244 |
// Content scannability (4 points) |
| 1245 |
$headings = $content_data['headings'] ?? []; |
| 1246 |
$word_count = $content_data['word_count'] ?? 0; |
| 1247 |
|
| 1248 |
if (count($headings) >= 3 && $word_count > 500) { |
| 1249 |
$score += 4; |
| 1250 |
} elseif (count($headings) >= 1) { |
| 1251 |
$score += 2; |
| 1252 |
$suggestions[] = 'Add more headings to make content easier to scan'; |
| 1253 |
} else { |
| 1254 |
$suggestions[] = 'Add headings to break up text and improve scannability'; |
| 1255 |
} |
| 1256 |
|
| 1257 |
return [ |
| 1258 |
'score' => $score, |
| 1259 |
'max_score' => $max_score, |
| 1260 |
'suggestions' => $suggestions, |
| 1261 |
'details' => [ |
| 1262 |
'readability_score' => $readability, |
| 1263 |
'readability_level' => $this->get_readability_level($readability), |
| 1264 |
'scannability' => count($headings) >= 3 ? 'Good' : 'Needs improvement', |
| 1265 |
] |
| 1266 |
]; |
| 1267 |
} |
| 1268 |
|
| 1269 |
/** |
| 1270 |
* Get readability level description |
| 1271 |
* |
| 1272 |
* @param float $score Readability score |
| 1273 |
* @return string Readability level |
| 1274 |
*/ |
| 1275 |
private function get_readability_level(float $score): string { |
| 1276 |
if ($score >= 90) return 'Very Easy'; |
| 1277 |
if ($score >= 80) return 'Easy'; |
| 1278 |
if ($score >= 70) return 'Fairly Easy'; |
| 1279 |
if ($score >= 60) return 'Standard'; |
| 1280 |
if ($score >= 50) return 'Fairly Difficult'; |
| 1281 |
if ($score >= 30) return 'Difficult'; |
| 1282 |
return 'Very Difficult'; |
| 1283 |
} |
| 1284 |
|
| 1285 |
/** |
| 1286 |
* Score strategic internal linking |
| 1287 |
* |
| 1288 |
* @param array $content_data Content analysis data |
| 1289 |
* @return array Scoring result |
| 1290 |
*/ |
| 1291 |
private function score_strategic_linking(array $content_data): array { |
| 1292 |
$score = 0; |
| 1293 |
$max_score = $this->scoring_factors['internal_linking']; |
| 1294 |
$suggestions = []; |
| 1295 |
|
| 1296 |
$internal_links = $content_data['internal_links'] ?? 0; |
| 1297 |
$word_count = $content_data['word_count'] ?? 0; |
| 1298 |
|
| 1299 |
// Calculate optimal link ratio (1 link per 150-200 words) |
| 1300 |
$optimal_links = max(1, round($word_count / 175)); |
| 1301 |
|
| 1302 |
if ($internal_links >= $optimal_links) { |
| 1303 |
$score += 8; |
| 1304 |
} elseif ($internal_links >= max(1, $optimal_links - 1)) { |
| 1305 |
$score += 6; |
| 1306 |
$suggestions[] = 'Consider adding 1-2 more internal links to related content'; |
| 1307 |
} elseif ($internal_links >= 1) { |
| 1308 |
$score += 4; |
| 1309 |
$suggestions[] = 'Add more internal links to improve site navigation and SEO'; |
| 1310 |
} else { |
| 1311 |
$suggestions[] = 'Add internal links to related pages to improve site structure'; |
| 1312 |
} |
| 1313 |
|
| 1314 |
return [ |
| 1315 |
'score' => $score, |
| 1316 |
'max_score' => $max_score, |
| 1317 |
'suggestions' => $suggestions, |
| 1318 |
'details' => [ |
| 1319 |
'current_links' => $internal_links, |
| 1320 |
'optimal_links' => $optimal_links, |
| 1321 |
'link_ratio' => $word_count > 0 ? round($word_count / max(1, $internal_links)) : 0, |
| 1322 |
] |
| 1323 |
]; |
| 1324 |
} |
| 1325 |
|
| 1326 |
/** |
| 1327 |
* Score external authority signals |
| 1328 |
* |
| 1329 |
* @param array $content_data Content analysis data |
| 1330 |
* @return array Scoring result |
| 1331 |
*/ |
| 1332 |
private function score_external_authority(array $content_data): array { |
| 1333 |
$score = 0; |
| 1334 |
$max_score = $this->scoring_factors['external_authority']; |
| 1335 |
$suggestions = []; |
| 1336 |
|
| 1337 |
$external_links = $content_data['external_links'] ?? 0; |
| 1338 |
|
| 1339 |
if ($external_links >= 2 && $external_links <= 5) { |
| 1340 |
$score += 7; |
| 1341 |
} elseif ($external_links === 1) { |
| 1342 |
$score += 5; |
| 1343 |
$suggestions[] = 'Consider adding 1-2 more high-quality external links to authoritative sources'; |
| 1344 |
} elseif ($external_links === 0) { |
| 1345 |
$score += 2; |
| 1346 |
$suggestions[] = 'Add external links to authoritative sources to support your content'; |
| 1347 |
} else { |
| 1348 |
$score += 4; |
| 1349 |
$suggestions[] = 'Too many external links - focus on 2-5 high-quality authoritative sources'; |
| 1350 |
} |
| 1351 |
|
| 1352 |
return [ |
| 1353 |
'score' => $score, |
| 1354 |
'max_score' => $max_score, |
| 1355 |
'suggestions' => $suggestions, |
| 1356 |
'details' => [ |
| 1357 |
'external_links' => $external_links, |
| 1358 |
'optimal_range' => '2-5 links', |
| 1359 |
'authority_signal' => $external_links > 0 ? 'Present' : 'Missing', |
| 1360 |
] |
| 1361 |
]; |
| 1362 |
} |
| 1363 |
|
| 1364 |
/** |
| 1365 |
* Score technical SEO factors |
| 1366 |
* |
| 1367 |
* @param array $content_data Content analysis data |
| 1368 |
* @param array $metadata Post metadata |
| 1369 |
* @param array $options Additional options |
| 1370 |
* @return array Scoring result |
| 1371 |
*/ |
| 1372 |
private function score_technical_seo(array $content_data, array $metadata, array $options): array { |
| 1373 |
$score = 0; |
| 1374 |
$max_score = $this->scoring_factors['technical_seo']; |
| 1375 |
$suggestions = []; |
| 1376 |
|
| 1377 |
// Meta description (2 points) |
| 1378 |
$meta_desc = $metadata['description'] ?? ''; |
| 1379 |
$meta_length = strlen($meta_desc); |
| 1380 |
|
| 1381 |
if ($meta_length >= 120 && $meta_length <= 160) { |
| 1382 |
$score += 2; |
| 1383 |
} elseif ($meta_length >= 100 && $meta_length <= 180) { |
| 1384 |
$score += 1; |
| 1385 |
$suggestions[] = 'Optimize meta description length to 120-160 characters'; |
| 1386 |
} else { |
| 1387 |
$suggestions[] = empty($meta_desc) ? |
| 1388 |
'Add a compelling meta description (120-160 characters)' : |
| 1389 |
'Adjust meta description length to 120-160 characters'; |
| 1390 |
} |
| 1391 |
|
| 1392 |
// Image optimization (2 points) |
| 1393 |
$images = $content_data['images'] ?? []; |
| 1394 |
if (!empty($images)) { |
| 1395 |
$images_with_alt = array_filter($images, function($img) { |
| 1396 |
return !empty($img['alt']); |
| 1397 |
}); |
| 1398 |
|
| 1399 |
$alt_ratio = count($images_with_alt) / count($images); |
| 1400 |
if ($alt_ratio >= 0.9) { |
| 1401 |
$score += 2; |
| 1402 |
} elseif ($alt_ratio >= 0.7) { |
| 1403 |
$score += 1; |
| 1404 |
$suggestions[] = 'Add alt text to remaining images for better accessibility'; |
| 1405 |
} else { |
| 1406 |
$suggestions[] = 'Add descriptive alt text to all images'; |
| 1407 |
} |
| 1408 |
} else { |
| 1409 |
$score += 1; // Partial credit if no images |
| 1410 |
} |
| 1411 |
|
| 1412 |
// URL structure (1 point) |
| 1413 |
$url = $content_data['url'] ?? ''; |
| 1414 |
if (!empty($url)) { |
| 1415 |
$slug = basename(wp_parse_url($url, PHP_URL_PATH)); |
| 1416 |
if (strlen($slug) <= 60 && !empty($options['target_keyword'])) { |
| 1417 |
if (strpos(strtolower($slug), strtolower($options['target_keyword'])) !== false) { |
| 1418 |
$score += 1; |
| 1419 |
} else { |
| 1420 |
$suggestions[] = 'Include target keyword in URL slug for better SEO'; |
| 1421 |
} |
| 1422 |
} else { |
| 1423 |
$suggestions[] = 'Optimize URL structure - keep it short and descriptive'; |
| 1424 |
} |
| 1425 |
} |
| 1426 |
|
| 1427 |
return [ |
| 1428 |
'score' => $score, |
| 1429 |
'max_score' => $max_score, |
| 1430 |
'suggestions' => $suggestions, |
| 1431 |
'details' => [ |
| 1432 |
'meta_description_length' => $meta_length, |
| 1433 |
'images_with_alt' => !empty($images) ? count(array_filter($images, function($img) { return !empty($img['alt']); })) : 0, |
| 1434 |
'total_images' => count($images), |
| 1435 |
'url_optimized' => !empty($url) && !empty($options['target_keyword']) ? |
| 1436 |
strpos(strtolower(basename(wp_parse_url($url, PHP_URL_PATH))), strtolower($options['target_keyword'])) !== false : false, |
| 1437 |
] |
| 1438 |
]; |
| 1439 |
} |
| 1440 |
|
| 1441 |
/** |
| 1442 |
* Score content freshness |
| 1443 |
* |
| 1444 |
* @param array $content_data Content analysis data |
| 1445 |
* @return array Scoring result |
| 1446 |
*/ |
| 1447 |
private function score_content_freshness(array $content_data): array { |
| 1448 |
$score = 3; // Default full score for new content |
| 1449 |
$max_score = $this->scoring_factors['content_freshness']; |
| 1450 |
$suggestions = []; |
| 1451 |
|
| 1452 |
// For now, give full score - can be enhanced with post date analysis |
| 1453 |
$suggestions[] = 'Keep content updated regularly for better freshness signals'; |
| 1454 |
|
| 1455 |
return [ |
| 1456 |
'score' => $score, |
| 1457 |
'max_score' => $max_score, |
| 1458 |
'suggestions' => $suggestions, |
| 1459 |
'details' => [ |
| 1460 |
'freshness_status' => 'Current', |
| 1461 |
'last_updated' => current_time('mysql'), |
| 1462 |
] |
| 1463 |
]; |
| 1464 |
} |
| 1465 |
|
| 1466 |
/** |
| 1467 |
* Score mobile optimization |
| 1468 |
* |
| 1469 |
* @param array $content_data Content analysis data |
| 1470 |
* @return array Scoring result |
| 1471 |
*/ |
| 1472 |
private function score_mobile_optimization(array $content_data): array { |
| 1473 |
$score = 2; // Default full score - basic mobile checks |
| 1474 |
$max_score = $this->scoring_factors['mobile_optimization']; |
| 1475 |
$suggestions = []; |
| 1476 |
|
| 1477 |
// For now, give full score - can be enhanced with actual mobile testing |
| 1478 |
$suggestions[] = 'Ensure content displays well on mobile devices'; |
| 1479 |
|
| 1480 |
return [ |
| 1481 |
'score' => $score, |
| 1482 |
'max_score' => $max_score, |
| 1483 |
'suggestions' => $suggestions, |
| 1484 |
'details' => [ |
| 1485 |
'mobile_friendly' => 'Assumed', |
| 1486 |
'responsive_design' => 'Theme dependent', |
| 1487 |
] |
| 1488 |
]; |
| 1489 |
} |
| 1490 |
|
| 1491 |
/** |
| 1492 |
* Analyze post content and extract data for scoring |
| 1493 |
* |
| 1494 |
* @param int $post_id Post ID |
| 1495 |
* @return array Content analysis data |
| 1496 |
*/ |
| 1497 |
public function analyze_post_content(int $post_id): array { |
| 1498 |
$post = get_post($post_id); |
| 1499 |
if (!$post) { |
| 1500 |
return []; |
| 1501 |
} |
| 1502 |
|
| 1503 |
$content = $post->post_content; |
| 1504 |
$title = $post->post_title; |
| 1505 |
|
| 1506 |
// Extract headings from content |
| 1507 |
$headings = $this->extract_headings($content); |
| 1508 |
|
| 1509 |
// Count words using JavaScript-compatible method |
| 1510 |
$plain_text = wp_strip_all_tags($content); |
| 1511 |
$word_count = $this->calculate_word_count_js_style($plain_text); |
| 1512 |
|
| 1513 |
// Calculate readability |
| 1514 |
$readability_score = $this->calculate_readability_score($content); |
| 1515 |
|
| 1516 |
// Count links |
| 1517 |
$internal_links = $this->count_internal_links($content); |
| 1518 |
$external_links = $this->count_external_links($content); |
| 1519 |
|
| 1520 |
// Analyze images |
| 1521 |
$images = $this->analyze_images($content); |
| 1522 |
|
| 1523 |
// Get URL |
| 1524 |
$url = get_permalink($post_id); |
| 1525 |
|
| 1526 |
return [ |
| 1527 |
'content' => $content, |
| 1528 |
'title' => $title, |
| 1529 |
'headings' => $headings, |
| 1530 |
'word_count' => $word_count, |
| 1531 |
'readability_score' => $readability_score, |
| 1532 |
'internal_links' => $internal_links, |
| 1533 |
'external_links' => $external_links, |
| 1534 |
'images' => $images, |
| 1535 |
'url' => $url, |
| 1536 |
]; |
| 1537 |
} |
| 1538 |
|
| 1539 |
/** |
| 1540 |
* Extract headings from content |
| 1541 |
* |
| 1542 |
* @param string $content Content HTML |
| 1543 |
* @return array Array of headings with levels |
| 1544 |
*/ |
| 1545 |
private function extract_headings(string $content): array { |
| 1546 |
$headings = []; |
| 1547 |
|
| 1548 |
// Match H1-H6 tags |
| 1549 |
if (preg_match_all('/<h([1-6])[^>]*>(.*?)<\/h[1-6]>/i', $content, $matches, PREG_SET_ORDER)) { |
| 1550 |
foreach ($matches as $match) { |
| 1551 |
$headings[] = [ |
| 1552 |
'level' => (int)$match[1], |
| 1553 |
'text' => wp_strip_all_tags($match[2]), |
| 1554 |
]; |
| 1555 |
} |
| 1556 |
} |
| 1557 |
|
| 1558 |
return $headings; |
| 1559 |
} |
| 1560 |
|
| 1561 |
/** |
| 1562 |
* Calculate readability score using Flesch Reading Ease |
| 1563 |
* |
| 1564 |
* @param string $content Content text |
| 1565 |
* @return float Readability score |
| 1566 |
*/ |
| 1567 |
private function calculate_readability_score(string $content): float { |
| 1568 |
$text = wp_strip_all_tags($content); |
| 1569 |
|
| 1570 |
if (empty($text)) { |
| 1571 |
return 0; |
| 1572 |
} |
| 1573 |
|
| 1574 |
// Count sentences (approximate) |
| 1575 |
$sentences = preg_split('/[.!?]+/', $text, -1, PREG_SPLIT_NO_EMPTY); |
| 1576 |
$sentence_count = count($sentences); |
| 1577 |
|
| 1578 |
// Count words |
| 1579 |
$word_count = $this->calculate_word_count_js_style(wp_strip_all_tags($text)); |
| 1580 |
|
| 1581 |
// Count syllables (approximate) |
| 1582 |
$syllable_count = $this->count_syllables($text); |
| 1583 |
|
| 1584 |
if ($sentence_count === 0 || $word_count === 0) { |
| 1585 |
return 0; |
| 1586 |
} |
| 1587 |
|
| 1588 |
// Flesch Reading Ease formula |
| 1589 |
$score = 206.835 - (1.015 * ($word_count / $sentence_count)) - (84.6 * ($syllable_count / $word_count)); |
| 1590 |
|
| 1591 |
return max(0, min(100, $score)); |
| 1592 |
} |
| 1593 |
|
| 1594 |
/** |
| 1595 |
* Count syllables in text (approximate) |
| 1596 |
* |
| 1597 |
* @param string $text Text to analyze |
| 1598 |
* @return int Syllable count |
| 1599 |
*/ |
| 1600 |
private function count_syllables(string $text): int { |
| 1601 |
$words = preg_split('/\s+/', trim(strtolower(wp_strip_all_tags($text))), -1, PREG_SPLIT_NO_EMPTY); |
| 1602 |
$syllables = 0; |
| 1603 |
|
| 1604 |
foreach ($words as $word) { |
| 1605 |
$syllables += max(1, preg_match_all('/[aeiouy]+/', $word)); |
| 1606 |
} |
| 1607 |
|
| 1608 |
return $syllables; |
| 1609 |
} |
| 1610 |
|
| 1611 |
/** |
| 1612 |
* Count internal links in content |
| 1613 |
* |
| 1614 |
* @param string $content Content HTML |
| 1615 |
* @return int Internal link count |
| 1616 |
*/ |
| 1617 |
private function count_internal_links(string $content): int { |
| 1618 |
$site_url = get_site_url(); |
| 1619 |
$count = 0; |
| 1620 |
|
| 1621 |
if (preg_match_all('/<a[^>]+href=["\']([^"\']+)["\'][^>]*>/i', $content, $matches)) { |
| 1622 |
foreach ($matches[1] as $url) { |
| 1623 |
if (strpos($url, $site_url) !== false || strpos($url, '/') === 0) { |
| 1624 |
$count++; |
| 1625 |
} |
| 1626 |
} |
| 1627 |
} |
| 1628 |
|
| 1629 |
return $count; |
| 1630 |
} |
| 1631 |
|
| 1632 |
/** |
| 1633 |
* Count external links in content |
| 1634 |
* |
| 1635 |
* @param string $content Content HTML |
| 1636 |
* @return int External link count |
| 1637 |
*/ |
| 1638 |
private function count_external_links(string $content): int { |
| 1639 |
$site_url = get_site_url(); |
| 1640 |
$count = 0; |
| 1641 |
|
| 1642 |
if (preg_match_all('/<a[^>]+href=["\']([^"\']+)["\'][^>]*>/i', $content, $matches)) { |
| 1643 |
foreach ($matches[1] as $url) { |
| 1644 |
if (strpos($url, 'http') === 0 && strpos($url, $site_url) === false) { |
| 1645 |
$count++; |
| 1646 |
} |
| 1647 |
} |
| 1648 |
} |
| 1649 |
|
| 1650 |
return $count; |
| 1651 |
} |
| 1652 |
|
| 1653 |
/** |
| 1654 |
* Analyze images in content |
| 1655 |
* |
| 1656 |
* @param string $content Content HTML |
| 1657 |
* @return array Image analysis data |
| 1658 |
*/ |
| 1659 |
private function analyze_images(string $content): array { |
| 1660 |
$images = []; |
| 1661 |
|
| 1662 |
if (preg_match_all('/<img[^>]+>/i', $content, $matches)) { |
| 1663 |
foreach ($matches[0] as $img_tag) { |
| 1664 |
$alt = ''; |
| 1665 |
if (preg_match('/alt=["\']([^"\']*)["\']/', $img_tag, $alt_match)) { |
| 1666 |
$alt = $alt_match[1]; |
| 1667 |
} |
| 1668 |
|
| 1669 |
$src = ''; |
| 1670 |
if (preg_match('/src=["\']([^"\']*)["\']/', $img_tag, $src_match)) { |
| 1671 |
$src = $src_match[1]; |
| 1672 |
} |
| 1673 |
|
| 1674 |
$images[] = [ |
| 1675 |
'src' => $src, |
| 1676 |
'alt' => $alt, |
| 1677 |
]; |
| 1678 |
} |
| 1679 |
} |
| 1680 |
|
| 1681 |
return $images; |
| 1682 |
} |
| 1683 |
|
| 1684 |
/** |
| 1685 |
* Save SEO score to database |
| 1686 |
* |
| 1687 |
* @param int $post_id Post ID |
| 1688 |
* @param int $user_id User ID |
| 1689 |
* @param array $score_data Score data |
| 1690 |
* @return int|false Score ID or false on failure |
| 1691 |
*/ |
| 1692 |
public function save_score(int $post_id, int $user_id, array $score_data) { |
| 1693 |
global $wpdb; |
| 1694 |
|
| 1695 |
$table_name = $wpdb->prefix . 'thinkrank_seo_scores'; |
| 1696 |
|
| 1697 |
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- SEO score storage requires direct database access |
| 1698 |
$result = $wpdb->insert( |
| 1699 |
$table_name, |
| 1700 |
[ |
| 1701 |
'post_id' => $post_id, |
| 1702 |
'user_id' => $user_id, |
| 1703 |
'overall_score' => $score_data['overall_score'], |
| 1704 |
'score_breakdown' => json_encode($score_data['score_breakdown']), |
| 1705 |
'suggestions' => json_encode($score_data['suggestions']), |
| 1706 |
'grade' => $score_data['grade'], |
| 1707 |
'algorithm_version' => $score_data['algorithm_version'] ?? '2024.1', |
| 1708 |
'calculated_at' => $score_data['calculated_at'], |
| 1709 |
'created_at' => current_time('mysql'), |
| 1710 |
], |
| 1711 |
[ |
| 1712 |
'%d', '%d', '%d', '%s', '%s', '%s', '%s', '%s', '%s' |
| 1713 |
] |
| 1714 |
); |
| 1715 |
|
| 1716 |
return $result ? $wpdb->insert_id : false; |
| 1717 |
} |
| 1718 |
|
| 1719 |
/** |
| 1720 |
* Get score history for a post |
| 1721 |
* |
| 1722 |
* @param int $post_id Post ID |
| 1723 |
* @param int $limit Number of scores to retrieve |
| 1724 |
* @return array Score history |
| 1725 |
*/ |
| 1726 |
public function get_score_history(int $post_id, int $limit = 10): array { |
| 1727 |
global $wpdb; |
| 1728 |
|
| 1729 |
// Get table name and escape it properly (table names cannot be parameterized) |
| 1730 |
$table_name = esc_sql($wpdb->prefix . 'thinkrank_seo_scores'); |
| 1731 |
|
| 1732 |
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- SEO score history requires direct database access |
| 1733 |
$results = $wpdb->get_results( |
| 1734 |
$wpdb->prepare( |
| 1735 |
// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- Table name is properly escaped using esc_sql() |
| 1736 |
"SELECT * FROM `{$table_name}` WHERE post_id = %d ORDER BY created_at DESC LIMIT %d", |
| 1737 |
$post_id, |
| 1738 |
$limit |
| 1739 |
), |
| 1740 |
ARRAY_A |
| 1741 |
); |
| 1742 |
|
| 1743 |
// Decode JSON fields |
| 1744 |
foreach ($results as &$result) { |
| 1745 |
$result['score_breakdown'] = json_decode($result['score_breakdown'], true); |
| 1746 |
$result['suggestions'] = json_decode($result['suggestions'], true); |
| 1747 |
} |
| 1748 |
|
| 1749 |
return $results ?: []; |
| 1750 |
} |
| 1751 |
|
| 1752 |
/** |
| 1753 |
* Get latest score for a post |
| 1754 |
* |
| 1755 |
* @param int $post_id Post ID |
| 1756 |
* @return array|null Latest score data |
| 1757 |
*/ |
| 1758 |
public function get_latest_score(int $post_id): ?array { |
| 1759 |
$history = $this->get_score_history($post_id, 1); |
| 1760 |
return !empty($history) ? $history[0] : null; |
| 1761 |
} |
| 1762 |
|
| 1763 |
/** |
| 1764 |
* Score mobile experience - NEW 2025 factor (5 points) |
| 1765 |
* |
| 1766 |
* @param array $content_data Content analysis data |
| 1767 |
* @return array Scoring result |
| 1768 |
*/ |
| 1769 |
private function score_mobile_experience(array $content_data): array { |
| 1770 |
return [ |
| 1771 |
'score' => 4, // Default good score for mobile |
| 1772 |
'max_score' => $this->scoring_factors['mobile_experience'], |
| 1773 |
'suggestions' => ['Ensure mobile-first design and fast loading on mobile devices'], |
| 1774 |
'details' => ['mobile_score' => 'Good'] |
| 1775 |
]; |
| 1776 |
} |
| 1777 |
|
| 1778 |
/** |
| 1779 |
* Score core web vitals - 2025 version (3 points) |
| 1780 |
* |
| 1781 |
* @param array $content_data Content analysis data |
| 1782 |
* @return array Scoring result |
| 1783 |
*/ |
| 1784 |
private function score_core_web_vitals(array $content_data): array { |
| 1785 |
return [ |
| 1786 |
'score' => 2, // Default partial score |
| 1787 |
'max_score' => $this->scoring_factors['core_web_vitals'], |
| 1788 |
'suggestions' => ['Optimize Core Web Vitals: LCP, FID, and CLS for better user experience'], |
| 1789 |
'details' => ['vitals_status' => 'Needs improvement'] |
| 1790 |
]; |
| 1791 |
} |
| 1792 |
|
| 1793 |
/** |
| 1794 |
* Score internal linking - declining importance (1 point) |
| 1795 |
* |
| 1796 |
* @param array $content_data Content analysis data |
| 1797 |
* @return array Scoring result |
| 1798 |
*/ |
| 1799 |
private function score_internal_linking(array $content_data): array { |
| 1800 |
$internal_links = $content_data['internal_links'] ?? 0; |
| 1801 |
$score = $internal_links > 0 ? 1 : 0; |
| 1802 |
|
| 1803 |
return [ |
| 1804 |
'score' => $score, |
| 1805 |
'max_score' => $this->scoring_factors['internal_linking'], |
| 1806 |
'suggestions' => $score === 0 ? ['Add relevant internal links to other pages on your site'] : [], |
| 1807 |
'details' => ['internal_links_count' => $internal_links] |
| 1808 |
]; |
| 1809 |
} |
| 1810 |
|
| 1811 |
/** |
| 1812 |
* Score technical factors (1 point) |
| 1813 |
* |
| 1814 |
* @param array $content_data Content analysis data |
| 1815 |
* @param array $metadata Post metadata |
| 1816 |
* @param array $options Additional options |
| 1817 |
* @return array Scoring result |
| 1818 |
*/ |
| 1819 |
private function score_technical_factors(array $content_data, array $metadata, array $options): array { |
| 1820 |
$score = 0; |
| 1821 |
$suggestions = []; |
| 1822 |
|
| 1823 |
// Meta description check |
| 1824 |
$meta_desc = $metadata['description'] ?? ''; |
| 1825 |
if (!empty($meta_desc) && strlen($meta_desc) >= 120 && strlen($meta_desc) <= 160) { |
| 1826 |
$score += 0.5; |
| 1827 |
} else { |
| 1828 |
$suggestions[] = 'Add a compelling meta description (120-160 characters)'; |
| 1829 |
} |
| 1830 |
|
| 1831 |
// Schema markup check (simplified) |
| 1832 |
if (!empty($content_data['schema_present'])) { |
| 1833 |
$score += 0.5; |
| 1834 |
} else { |
| 1835 |
$suggestions[] = 'Consider adding structured data (schema markup)'; |
| 1836 |
} |
| 1837 |
|
| 1838 |
return [ |
| 1839 |
'score' => $score, |
| 1840 |
'max_score' => $this->scoring_factors['technical_factors'], |
| 1841 |
'suggestions' => $suggestions, |
| 1842 |
'details' => [ |
| 1843 |
'meta_description_length' => strlen($meta_desc), |
| 1844 |
'schema_present' => !empty($content_data['schema_present']) |
| 1845 |
] |
| 1846 |
]; |
| 1847 |
} |
| 1848 |
|
| 1849 |
/** |
| 1850 |
* Get grade from score |
| 1851 |
* |
| 1852 |
* @param mixed $score Numeric score |
| 1853 |
* @return string Letter grade |
| 1854 |
*/ |
| 1855 |
private function get_grade_from_score($score): string { |
| 1856 |
$score = (int) $score; // Ensure it's an integer |
| 1857 |
|
| 1858 |
if ($score >= 95) return 'A+'; |
| 1859 |
if ($score >= 90) return 'A'; |
| 1860 |
if ($score >= 85) return 'A-'; |
| 1861 |
if ($score >= 80) return 'B+'; |
| 1862 |
if ($score >= 75) return 'B'; |
| 1863 |
if ($score >= 70) return 'B-'; |
| 1864 |
if ($score >= 65) return 'C+'; |
| 1865 |
if ($score >= 60) return 'C'; |
| 1866 |
if ($score >= 55) return 'C-'; |
| 1867 |
if ($score >= 45) return 'D+'; |
| 1868 |
if ($score >= 35) return 'D'; |
| 1869 |
return 'F'; |
| 1870 |
} |
| 1871 |
|
| 1872 |
/** |
| 1873 |
* Analyze live content from editor (not saved to database yet) |
| 1874 |
* Same as analyze_post_content but uses provided content instead of saved content |
| 1875 |
* |
| 1876 |
* @param string $live_content Live content from editor |
| 1877 |
* @param int $post_id Post ID for metadata |
| 1878 |
* @return array Content analysis data |
| 1879 |
*/ |
| 1880 |
public function analyze_live_content(string $live_content, int $post_id): array { |
| 1881 |
$post = get_post($post_id); |
| 1882 |
if (!$post) { |
| 1883 |
return []; |
| 1884 |
} |
| 1885 |
|
| 1886 |
$content = $live_content; // Use live content instead of $post->post_content |
| 1887 |
$title = $post->post_title; |
| 1888 |
|
| 1889 |
// Extract headings from content |
| 1890 |
$headings = $this->extract_headings($content); |
| 1891 |
|
| 1892 |
// Count words using JavaScript-compatible method |
| 1893 |
$plain_text = wp_strip_all_tags($content); |
| 1894 |
$word_count = $this->calculate_word_count_js_style($plain_text); |
| 1895 |
|
| 1896 |
// Calculate readability |
| 1897 |
$readability_score = $this->calculate_readability_score($content); |
| 1898 |
|
| 1899 |
// Count links |
| 1900 |
$internal_links = $this->count_internal_links($content); |
| 1901 |
$external_links = $this->count_external_links($content); |
| 1902 |
|
| 1903 |
// Analyze images |
| 1904 |
$images = $this->analyze_images($content); |
| 1905 |
|
| 1906 |
// Get URL |
| 1907 |
$url = get_permalink($post_id); |
| 1908 |
|
| 1909 |
return [ |
| 1910 |
'content' => $content, |
| 1911 |
'title' => $title, |
| 1912 |
'headings' => $headings, |
| 1913 |
'word_count' => $word_count, |
| 1914 |
'readability_score' => $readability_score, |
| 1915 |
'internal_links' => $internal_links, |
| 1916 |
'external_links' => $external_links, |
| 1917 |
'images' => $images, |
| 1918 |
'url' => $url, |
| 1919 |
]; |
| 1920 |
} |
| 1921 |
|
| 1922 |
/** |
| 1923 |
* Calculate word count using JavaScript-compatible method |
| 1924 |
* Matches the logic in contentAnalysis.js for consistency |
| 1925 |
* |
| 1926 |
* @param string $text Text to count words in |
| 1927 |
* @return int Word count |
| 1928 |
*/ |
| 1929 |
private function calculate_word_count_js_style(string $text): int { |
| 1930 |
if (empty($text)) { |
| 1931 |
return 0; |
| 1932 |
} |
| 1933 |
|
| 1934 |
// Match JavaScript: trim, split by whitespace, filter empty |
| 1935 |
$words = preg_split('/\s+/', trim($text), -1, PREG_SPLIT_NO_EMPTY); |
| 1936 |
return count($words); |
| 1937 |
} |
| 1938 |
|
| 1939 |
/** |
| 1940 |
* Get existing score data for a post from database |
| 1941 |
* |
| 1942 |
* @param int $post_id Post ID |
| 1943 |
* @return array|null Existing score data or null if not found |
| 1944 |
*/ |
| 1945 |
public function get_existing_score_data(int $post_id): ?array { |
| 1946 |
global $wpdb; |
| 1947 |
|
| 1948 |
// Get table name and escape it properly (table names cannot be parameterized) |
| 1949 |
$table_name = esc_sql($wpdb->prefix . 'thinkrank_seo_scores'); |
| 1950 |
|
| 1951 |
// Get the most recent score for this post |
| 1952 |
// phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching -- SEO score retrieval requires direct database access |
| 1953 |
$result = $wpdb->get_row($wpdb->prepare( |
| 1954 |
// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared -- Table name is properly escaped using esc_sql() |
| 1955 |
"SELECT * FROM `{$table_name}` |
| 1956 |
WHERE post_id = %d |
| 1957 |
ORDER BY calculated_at DESC |
| 1958 |
LIMIT 1", |
| 1959 |
$post_id |
| 1960 |
), ARRAY_A); |
| 1961 |
|
| 1962 |
if (!$result) { |
| 1963 |
return null; |
| 1964 |
} |
| 1965 |
|
| 1966 |
// Decode JSON data (stored with json_encode) |
| 1967 |
$score_breakdown = json_decode($result['score_breakdown'], true); |
| 1968 |
$suggestions = json_decode($result['suggestions'], true); |
| 1969 |
|
| 1970 |
// Format the data to match the expected structure |
| 1971 |
return [ |
| 1972 |
'overall_score' => (int) $result['overall_score'], |
| 1973 |
'grade' => $result['grade'], |
| 1974 |
'score_breakdown' => $score_breakdown, |
| 1975 |
'suggestions' => $suggestions ?: [], |
| 1976 |
'target_keyword' => null, // Not stored in database, will be provided by frontend |
| 1977 |
'calculated_at' => $result['calculated_at'], |
| 1978 |
'score_id' => $result['id'] |
| 1979 |
]; |
| 1980 |
} |
| 1981 |
} |
| 1982 |
|
