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ThinkRank AI SEO – AI SEO Plugin for WordPress: Schema, XML Sitemaps, Meta Tags, Search Console & Local SEO / 2.14.2
ThinkRank AI SEO – AI SEO Plugin for WordPress: Schema, XML Sitemaps, Meta Tags, Search Console & Local SEO v2.14.2
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← All changes | includes/ai/class-seo-score-calculator.php +340 -48 2.7.0 → 2.14.2 View file →
@@ -59,8 +59,23 @@
59 59 */
60 60 private bool $measured_performance_resolved = false;
61 61
62 62 /**
63 + * Length bands the editor scores against, in characters.
64 + *
65 + * Public so every surface that judges a title or description — the editor
66 + * score and the Bulk Snippets problem filter — reads one set of numbers.
67 + * Before these existed the bands were literals inside the scoring methods,
68 + * and a second screen would have had to copy them and drift (#727).
69 + *
70 + * @since 2.8.0
71 + */
72 + public const TITLE_OPTIMAL_MIN = 35;
73 + public const TITLE_OPTIMAL_MAX = 60;
74 + public const DESCRIPTION_OPTIMAL_MIN = 120;
75 + public const DESCRIPTION_OPTIMAL_MAX = 160;
76 +
77 + /**
63 78 * 2025 SEO scoring factors (Q1 2025 Google Algorithm)
64 79 * Based on First Page Sage research and Google's latest updates
65 80 *
66 81 * @var array
@@ -125,8 +140,9 @@
125 140 'grade' => $result['grade'],
126 141 ]];
127 142 $result['keyword_checks'] = $this->analyze_keyword_checks($content_data, $metadata, $keywords);
128 143 }
144 + $result['keywords'] = $this->keyword_placements($content_data, $metadata, $keywords);
129 145
130 146 return $result;
131 147 }
132 148
@@ -236,8 +252,9 @@
236 252 $best['target_keyword'] = $best_keyword;
237 253 $best['target_keywords'] = $keywords;
238 254 $best['keyword_results'] = $per_keyword;
239 255 $best['keyword_checks'] = $this->analyze_keyword_checks($content_data, $metadata, $keywords);
256 + $best['keywords'] = $this->keyword_placements($content_data, $metadata, $keywords);
240 257
241 258 return $best;
242 259 }
243 260
@@ -252,15 +269,15 @@
252 269 * @param string[] $keywords Target keywords.
253 270 * @return array<string,array{passed:bool,matched_keywords:string[]}>
254 271 */
255 272 private function analyze_keyword_checks(array $content_data, array $metadata, array $keywords): array {
256 - $title = strtolower((string) ($metadata['title'] ?? $content_data['title'] ?? ''));
257 - $description = strtolower((string) ($metadata['description'] ?? ''));
258 - $content = strtolower(wp_strip_all_tags((string) ($content_data['content'] ?? '')));
273 + $title = self::lower((string) ($metadata['title'] ?? $content_data['title'] ?? ''));
274 + $description = self::lower((string) ($metadata['description'] ?? ''));
275 + $content = self::lower(self::plain_text((string) ($content_data['content'] ?? '')));
259 276
260 277 $alts = '';
261 278 foreach ((array) ($content_data['images'] ?? []) as $image) {
262 - $alts .= ' ' . strtolower((string) ($image['alt'] ?? ''));
279 + $alts .= ' ' . self::lower((string) ($image['alt'] ?? ''));
263 280 }
264 281
265 282 // Build a searchable slug haystack from the post's OWN slug — never the
266 283 // full URL path. The path carries ancestors, category bases and date
@@ -269,17 +286,9 @@
269 286 // way: an unpublished post has no pretty permalink (get_permalink()
270 287 // returns ?p=123), so the path held no slug at all and every draft
271 288 // scored "no match" until it was published. Hyphens/underscores become
272 289 // spaces so multi-word keywords can match.
273 - $slug_source = (string) ($content_data['slug'] ?? '');
274 - if ($slug_source === '') {
275 - // Draft with no slug assigned yet: score what WordPress would
276 - // generate from the title, which is what the editor shows as the
277 - // proposed URL — so the check reads the same before and after
278 - // publishing instead of flipping.
279 - $slug_source = sanitize_title((string) ($content_data['title'] ?? ''));
280 - }
281 - $slug = strtolower(str_replace(['-', '_'], ' ', $slug_source));
290 + $slug = self::lower(self::slug_haystack($content_data));
282 291
283 292 $haystacks = [
284 293 'title' => trim($title),
285 294 'meta_description' => trim($description),
@@ -291,9 +300,9 @@
291 300 $checks = [];
292 301 foreach ($haystacks as $location => $haystack) {
293 302 $matched = [];
294 303 foreach ($keywords as $keyword) {
295 - if ($this->keyword_matches($haystack, strtolower(trim($keyword)))) {
304 + if ($this->keyword_matches($haystack, self::lower(trim($keyword)))) {
296 305 $matched[] = $keyword;
297 306 }
298 307 }
299 308 $checks[$location] = [
@@ -305,8 +314,210 @@
305 314 return $checks;
306 315 }
307 316
308 317 /**
318 + * The keyword placements the editor draws one gauge segment for, in the
319 + * order a reader meets them (#729).
320 + *
321 + * @since 2.11.0
322 + * @var string[]
323 + */
324 + public const PLACEMENTS = ['title', 'meta_description', 'slug', 'first_paragraph', 'subheading', 'content', 'image_alt'];
325 +
326 + /**
327 + * Characters of plain text read as the opening when the content has no
328 + * paragraph tag.
329 + *
330 + * @since 2.11.0
331 + */
332 + private const OPENING_CHARS = 300;
333 +
334 + /**
335 + * Where each focus keyword is placed, keyword by keyword (#729).
336 + *
337 + * analyze_keyword_checks() answers "does ANY keyword appear here" for
338 + * five places; this answers "where does THIS keyword appear" for seven,
339 + * so the editor can show each keyword's own gauge. Same matcher, so a
340 + * keyword counts as a word (not a fragment) and a keyword in a script
341 + * written without spaces (Thai, Chinese, Japanese) still matches.
342 + *
343 + * `where` names the heading or alt text that matched, so the editor can
344 + * say which one.
345 + *
346 + * @since 2.11.0
347 + *
348 + * @param array $content_data Content analysis data.
349 + * @param array $metadata Post metadata (title, description).
350 + * @param string[] $keywords Focus keywords.
351 + * @return array<int, array{keyword: string, passed: int, total: int, placements: array<string, array{passed: bool, where: string}>}>
352 + */
353 + public function keyword_placements(array $content_data, array $metadata, array $keywords): array {
354 + $html = (string) ($content_data['content'] ?? '');
355 + $plain = self::lower(self::plain_text($html));
356 +
357 + $headings = [];
358 + $source = isset($content_data['headings']) && is_array($content_data['headings']) ? $content_data['headings'] : $this->extract_headings($html);
359 + foreach ($source as $heading) {
360 + $text = trim((string) ($heading['text'] ?? ''));
361 + if ((int) ($heading['level'] ?? 0) >= 2 && '' !== $text) {
362 + $headings[] = $text;
363 + }
364 + }
365 +
366 + $alts = [];
367 + foreach ((array) ($content_data['images'] ?? []) as $image) {
368 + $alt = trim((string) ($image['alt'] ?? ''));
369 + if ('' !== $alt) {
370 + $alts[] = $alt;
371 + }
372 + }
373 +
374 + $single = [
375 + 'title' => self::lower((string) ($metadata['title'] ?? $content_data['title'] ?? '')),
376 + 'meta_description' => self::lower((string) ($metadata['description'] ?? '')),
377 + 'slug' => self::lower(self::slug_haystack($content_data)),
378 + 'first_paragraph' => self::lower(self::opening($html)),
379 + 'content' => $plain,
380 + ];
381 +
382 + $out = [];
383 + foreach ($keywords as $keyword) {
384 + $needle = self::lower(trim((string) $keyword));
385 + $placements = [];
386 +
387 + foreach (self::PLACEMENTS as $placement) {
388 + if ('subheading' === $placement || 'image_alt' === $placement) {
389 + $where = '';
390 + foreach ('subheading' === $placement ? $headings : $alts as $text) {
391 + if ($this->keyword_matches(self::lower($text), $needle)) {
392 + $where = $text;
393 + break;
394 + }
395 + }
396 + $placements[$placement] = ['passed' => '' !== $where, 'where' => $where];
397 + continue;
398 + }
399 +
400 + $placements[$placement] = ['passed' => $this->keyword_matches($single[$placement], $needle), 'where' => ''];
401 + }
402 +
403 + $out[] = [
404 + 'keyword' => (string) $keyword,
405 + 'passed' => count(array_filter(array_column($placements, 'passed'))),
406 + 'total' => count(self::PLACEMENTS),
407 + 'placements' => $placements,
408 + ];
409 + }
410 +
411 + return $out;
412 + }
413 +
414 + /**
415 + * The post's own slug as searchable text: hyphens and underscores become
416 + * spaces so a multi-word keyword can match, and a slug WordPress
417 + * percent-encoded (Thai, Cyrillic, Chinese) is decoded, or it could never
418 + * match a keyword typed in that script.
419 + *
420 + * Never the full URL path: the path carries ancestors, category bases and
421 + * date segments, so a child of /clinical-trials/ reported "keyword in slug"
422 + * for a page actually slugged `contact-us`. An unpublished post has no
423 + * pretty permalink either, so the path held no slug at all.
424 + *
425 + * @param array $content_data Content analysis data.
426 + * @return string
427 + */
428 + private static function slug_haystack(array $content_data): string {
429 + $slug = (string) ($content_data['slug'] ?? '');
430 + if ('' === $slug) {
431 + // Draft with no slug assigned yet: score what WordPress would
432 + // generate from the title, which is what the editor shows as the
433 + // proposed URL — so the check reads the same before and after
434 + // publishing instead of flipping.
435 + $slug = sanitize_title((string) ($content_data['title'] ?? ''));
436 + }
437 +
438 + return trim(str_replace(['-', '_'], ' ', rawurldecode($slug)));
439 + }
440 +
441 + /**
442 + * The opening of the content: its first paragraph with text, or the first
443 + * few hundred characters when it has none. Counted in characters, not
444 + * words, so a language written without spaces is not read as one word.
445 + *
446 + * @param string $html Content HTML.
447 + * @return string Plain text.
448 + */
449 + private static function opening(string $html): string {
450 + if (preg_match_all('/<p\b[^>]*>(.*?)<\/p>/isu', $html, $matches)) {
451 + foreach ($matches[1] as $paragraph) {
452 + $text = self::collapse_whitespace(wp_strip_all_tags($paragraph));
453 + if ('' !== $text) {
454 + return $text;
455 + }
456 + }
457 + }
458 +
459 + $text = self::plain_text($html);
460 +
461 + return function_exists('mb_substr') ? mb_substr($text, 0, self::OPENING_CHARS) : substr($text, 0, self::OPENING_CHARS);
462 + }
463 +
464 + /**
465 + * Content as plain text, with a space where each tag was. wp_strip_all_tags()
466 + * alone joins neighbouring blocks — "…coffee grinder</h3><p>A good…" became
467 + * "coffee grinderA good" — so a keyword at the end of a heading or a
468 + * paragraph was no longer a word and did not match.
469 + *
470 + * @param string $html Content HTML.
471 + * @return string
472 + */
473 + private static function plain_text(string $html): string {
474 + $spaced = preg_replace('/<[^>]+>/', ' $0 ', $html);
475 +
476 + return self::collapse_whitespace(wp_strip_all_tags(null === $spaced ? $html : (string) $spaced));
477 + }
478 +
479 + /**
480 + * Runs of whitespace down to one space.
481 + *
482 + * The `/u` pass is the one that understands a multibyte space, but
483 + * preg_replace() answers null on bytes that are not valid UTF-8 rather than
484 + * throwing — and casting that null to a string blanked the haystack, so a
485 + * post carrying one mojibake byte (a Latin-1 paste, an old import) reported
486 + * every keyword as missing from its body, its opening, and every
487 + * subheading. The gauge said 0/7 and told the author to add a keyword that
488 + * was already there.
489 + *
490 + * Falls back to the byte-wise collapse, which is what this did before the
491 + * multibyte work added the modifier. Same reasoning keyword_matches()
492 + * already records for its own PCRE failure: a pattern PCRE refuses must not
493 + * be reported as a confident "no match".
494 + *
495 + * @param string $text Text to collapse.
496 + * @return string
497 + */
498 + private static function collapse_whitespace(string $text): string {
499 + $collapsed = preg_replace('/\s+/u', ' ', $text);
500 +
501 + if (null === $collapsed) {
502 + $collapsed = preg_replace('/\s+/', ' ', $text);
503 + }
504 +
505 + return trim(null === $collapsed ? $text : (string) $collapsed);
506 + }
507 +
508 + /**
509 + * Lowercase in any script. strtolower() only folds ASCII, so "Кофе" never
510 + * matched "кофе".
511 + *
512 + * @param string $text Text.
513 + * @return string
514 + */
515 + private static function lower(string $text): string {
516 + return function_exists('mb_strtolower') ? mb_strtolower($text, 'UTF-8') : strtolower($text);
517 + }
518 +
519 + /**
309 520 * Scripts written without spaces between words.
310 521 *
311 522 * @since 2.1.0
312 523 * @var string
@@ -647,9 +858,9 @@
647 858 $title_length = mb_strlen($title);
648 859
649 860 // 2025 length optimization (6 points). 60 characters is the recommended
650 861 // maximum for best SERP visibility before Google truncates the title.
651 - if ($title_length >= 35 && $title_length <= 60) {
862 + if ($title_length >= self::TITLE_OPTIMAL_MIN && $title_length <= self::TITLE_OPTIMAL_MAX) {
652 863 $score += 6;
653 864 } elseif ($title_length >= 25 && $title_length <= 75) {
654 865 $score += 4;
655 866 $suggestions[] = 'Optimize title length to 35-60 characters for better SERP visibility';
@@ -1052,14 +1263,16 @@
1052 1263 if (empty($content) || empty($target_keyword)) {
1053 1264 return 0.0;
1054 1265 }
1055 1266
1056 - $content_lower = strtolower(wp_strip_all_tags($content));
1267 + // Occurrences and the word count both come from the reading text, so
1268 + // shortcode syntax is in neither.
1269 + $content_lower = strtolower(self::reading_text_of($content));
1057 1270 $keyword_lower = strtolower($target_keyword);
1058 1271
1059 1272 // Calculate keyword and semantic term frequency
1060 1273 $keyword_count = substr_count($content_lower, $keyword_lower);
1061 - $word_count = $this->calculate_word_count_js_style($content_lower);
1274 + $word_count = \ThinkRank\SEO\Word_Count_Index::count_words($content_lower);
1062 1275
1063 1276 if ($word_count === 0) {
1064 1277 return 0.0;
1065 1278 }
@@ -1138,10 +1351,13 @@
1138 1351 private function keyword_density(string $content, string $target_keyword): float {
1139 1352 if (empty($content) || empty($target_keyword)) {
1140 1353 return 0.0;
1141 1354 }
1142 - $plain = strtolower(wp_strip_all_tags($content));
1143 - $word_count = $this->calculate_word_count_js_style($plain);
1355 + // Numerator and denominator from the same reading text. Counting the
1356 + // keyword in wp_strip_all_tags() output found it inside shortcode
1357 + // attributes the word count no longer includes.
1358 + $plain = strtolower(self::reading_text_of($content));
1359 + $word_count = \ThinkRank\SEO\Word_Count_Index::count_words($plain);
1144 1360 if ($word_count === 0) {
1145 1361 return 0.0;
1146 1362 }
1147 1363 $occurrences = substr_count($plain, strtolower($target_keyword));
@@ -1176,10 +1392,10 @@
1176 1392 private function keyword_in_first_paragraph(string $content, string $target_keyword): bool {
1177 1393 if (empty($content) || empty($target_keyword)) {
1178 1394 return false;
1179 1395 }
1180 - $plain = strtolower(wp_strip_all_tags($content));
1181 - $words = preg_split('/\s+/', trim($plain), -1, PREG_SPLIT_NO_EMPTY) ?: [];
1396 + $plain = strtolower(self::reading_text_of($content));
1397 + $words = preg_split('/\s+/', $plain, -1, PREG_SPLIT_NO_EMPTY) ?: [];
1182 1398 $window = array_slice($words, 0, max(50, (int) ceil(count($words) * 0.1)));
1183 1399 return strpos(implode(' ', $window), strtolower($target_keyword)) !== false;
1184 1400 }
1185 1401
@@ -1409,9 +1625,24 @@
1409 1625 if (!class_exists('\ThinkRank\SEO\Builder_Content')) {
1410 1626 require_once THINKRANK_PLUGIN_DIR . 'includes/seo/class-builder-content.php';
1411 1627 }
1412 1628
1413 - return \ThinkRank\SEO\Builder_Content::resolve_markup($live_content, $post);
1629 + // Bind the live markup to the post the render makes current. Since #862
1630 + // the resolver runs setup_postdata() on this post, so a shortcode that
1631 + // builds its output from the current post's content — get_the_content(),
1632 + // get_post()->post_content, as a table of contents or a reading-time
1633 + // shortcode does — otherwise read the last saved body while the unsaved
1634 + // markup rendered around it, and lagged a save behind (#864).
1635 + //
1636 + // A clone, not the caller's object: the post is current only for the
1637 + // duration of the render and the caller's $post must come back
1638 + // unchanged. `thinkrank_analyzable_content` receives the clone too,
1639 + // which is what makes $post->post_content there agree with the markup
1640 + // being analyzed on the live path.
1641 + $bound = clone $post;
1642 + $bound->post_content = $live_content;
1643 +
1644 + return \ThinkRank\SEO\Builder_Content::resolve_markup($live_content, $bound);
1414 1645 }
1415 1646
1416 1647 public function analyze_post_content(int $post_id): array {
1417 1648 $post = get_post($post_id);
@@ -1424,11 +1655,12 @@
1424 1655
1425 1656 // Extract headings from content
1426 1657 $headings = $this->extract_headings($content);
1427 1658
1428 - // Count words using JavaScript-compatible method
1429 - $plain_text = wp_strip_all_tags($content);
1430 - $word_count = $this->calculate_word_count_js_style($plain_text);
1659 + // Count the markup, not wp_strip_all_tags() output: stripping deletes
1660 + // tags without a space, so "five</p><p>six" would already be one word
1661 + // before the counter saw it.
1662 + $word_count = $this->calculate_word_count_js_style($content);
1431 1663
1432 1664 // Calculate readability
1433 1665 $readability_score = $this->calculate_readability_score($content);
1434 1666
@@ -1548,9 +1780,9 @@
1548 1780 // 2. Long paragraphs (flag paragraphs over 150 words).
1549 1781 $long_paragraphs = 0;
1550 1782 if (preg_match_all('/<p[^>]*>(.*?)<\/p>/is', $content, $matches)) {
1551 1783 foreach ($matches[1] as $paragraph) {
1552 - if ($this->calculate_word_count_js_style(wp_strip_all_tags($paragraph)) > 150) {
1784 + if ($this->calculate_word_count_js_style($paragraph) > 150) {
1553 1785 $long_paragraphs++;
1554 1786 }
1555 1787 }
1556 1788 }
@@ -1605,22 +1837,22 @@
1605 1837 * @param string $content Content text
1606 1838 * @return float Readability score
1607 1839 */
1608 1840 private function calculate_readability_score(string $content): float {
1609 - $text = wp_strip_all_tags($content);
1841 + // Sentences, words and syllables all come from one reading text. The
1842 + // word count drops shortcode syntax and punctuation-only tokens; when
1843 + // sentences and syllables were still read off wp_strip_all_tags()
1844 + // output, "[vc_column width="1/2"]" added syllables (and, with a "." in
1845 + // an attribute, sentences) to a word count that did not include it,
1846 + // and a WPBakery page's Flesch fell from 65 to 46.
1847 + $text = self::reading_text_of($content);
1610 1848
1611 - if (empty($text)) {
1849 + if ('' === $text) {
1612 1850 return 0;
1613 1851 }
1614 1852
1615 - // Count sentences (approximate)
1616 - $sentences = preg_split('/[.!?]+/', $text, -1, PREG_SPLIT_NO_EMPTY);
1617 - $sentence_count = count($sentences);
1618 -
1619 - // Count words
1620 - $word_count = $this->calculate_word_count_js_style(wp_strip_all_tags($text));
1621 -
1622 - // Count syllables (approximate)
1853 + $sentence_count = self::count_sentences($text);
1854 + $word_count = \ThinkRank\SEO\Word_Count_Index::count_words($text);
1623 1855 $syllable_count = $this->count_syllables($text);
1624 1856
1625 1857 if ($sentence_count === 0 || $word_count === 0) {
1626 1858 return 0;
@@ -1632,15 +1864,37 @@
1632 1864 return max(0, min(100, $score));
1633 1865 }
1634 1866
1635 1867 /**
1868 + * Count the sentences in reading text.
1869 + *
1870 + * A sentence is a run of text between terminal punctuation that holds at
1871 + * least one letter or digit. A fragment with no word in it (the space
1872 + * after the final full stop, a stray "!" between two "?") is not a
1873 + * sentence. contentAnalysis.js countSentences() applies the same rule.
1874 + *
1875 + * @since 2.14.2
1876 + *
1877 + * @param string $text Text as returned by {@see self::reading_text_of()}.
1878 + * @return int
1879 + */
1880 + private static function count_sentences(string $text): int {
1881 + $fragments = preg_split('/[.!?]+/', $text, -1, PREG_SPLIT_NO_EMPTY) ?: [];
1882 +
1883 + return count(preg_grep('/[\p{L}\p{N}]/u', $fragments) ?: []);
1884 + }
1885 +
1886 + /**
1636 1887 * Count syllables in text (approximate)
1637 1888 *
1889 + * Expects reading text ({@see self::reading_text_of()}); tags are not
1890 + * stripped here, so a decoded "<" in prose is not read as a tag.
1891 + *
1638 1892 * @param string $text Text to analyze
1639 1893 * @return int Syllable count
1640 1894 */
1641 1895 private function count_syllables(string $text): int {
1642 - $words = preg_split('/\s+/', trim(strtolower(wp_strip_all_tags($text))), -1, PREG_SPLIT_NO_EMPTY);
1896 + $words = preg_split('/\s+/', trim(strtolower($text)), -1, PREG_SPLIT_NO_EMPTY) ?: [];
1643 1897 $syllables = 0;
1644 1898
1645 1899 foreach ($words as $word) {
1646 1900 $word = preg_replace('/[^a-z]/', '', $word);
@@ -2166,9 +2420,9 @@
2166 2420 $suggestions = [];
2167 2421
2168 2422 // Meta description check
2169 2423 $meta_desc = $metadata['description'] ?? '';
2170 - if (!empty($meta_desc) && mb_strlen($meta_desc) >= 120 && mb_strlen($meta_desc) <= 160) {
2424 + if (!empty($meta_desc) && mb_strlen($meta_desc) >= self::DESCRIPTION_OPTIMAL_MIN && mb_strlen($meta_desc) <= self::DESCRIPTION_OPTIMAL_MAX) {
2171 2425 $score += 0.5;
2172 2426 } else {
2173 2427 $suggestions[] = 'Add a compelling meta description (120-160 characters)';
2174 2428 }
@@ -2250,11 +2504,12 @@
2250 2504
2251 2505 // Extract headings from content
2252 2506 $headings = $this->extract_headings($content);
2253 2507
2254 - // Count words using JavaScript-compatible method
2255 - $plain_text = wp_strip_all_tags($content);
2256 - $word_count = $this->calculate_word_count_js_style($plain_text);
2508 + // Count the markup, not wp_strip_all_tags() output: stripping deletes
2509 + // tags without a space, so "five</p><p>six" would already be one word
2510 + // before the counter saw it.
2511 + $word_count = $this->calculate_word_count_js_style($content);
2257 2512
2258 2513 // Calculate readability
2259 2514 $readability_score = $this->calculate_readability_score($content);
2260 2515
@@ -2288,22 +2543,59 @@
2288 2543 ];
2289 2544 }
2290 2545
2291 2546 /**
2292 - * Calculate word count using JavaScript-compatible method
2293 - * Matches the logic in contentAnalysis.js for consistency
2547 + * Count the words a reader reads in HTML or text.
2294 2548 *
2295 - * @param string $text Text to count words in
2549 + * The same extraction and counting as the thin content report
2550 + * ({@see \ThinkRank\SEO\Word_Count_Index::reading_text()} and
2551 + * {@see \ThinkRank\SEO\Word_Count_Index::count_words()}), so the editor
2552 + * score and the report give one number for one page. Splitting on
2553 + * whitespace counted shortcode syntax as words: a WPBakery page with 216
2554 + * words of prose scored a word count of 325 while the report said 216
2555 + * (#893 fixed the report only). It also counted tokens of punctuation
2556 + * alone, such as a full stop after a link.
2557 + *
2558 + * Always words, whatever the locale's unit, because every threshold that
2559 + * reads this value (content length, long paragraphs, headings per 300
2560 + * words, readability, keyword density) is in words.
2561 + *
2562 + * contentAnalysis.js calculateWordCount() applies the same two rules in
2563 + * the editor.
2564 + *
2565 + * @param string $text HTML or text to count words in.
2296 2566 * @return int Word count
2297 2567 */
2298 2568 private function calculate_word_count_js_style(string $text): int {
2299 - if (empty($text)) {
2569 + if ('' === $text) {
2300 2570 return 0;
2301 2571 }
2302 2572
2303 - // Match JavaScript: trim, split by whitespace, filter empty
2304 - $words = preg_split('/\s+/', trim($text), -1, PREG_SPLIT_NO_EMPTY);
2305 - return count($words);
2573 + return \ThinkRank\SEO\Word_Count_Index::count_words(self::reading_text_of($text));
2574 + }
2575 +
2576 + /**
2577 + * The text a reader reads in HTML or text, as the word count sees it.
2578 + *
2579 + * Every check that divides by the word count (readability, keyword
2580 + * density, topic relevance) reads its numerator from this same text, so
2581 + * shortcode syntax is never on one side of a ratio and not the other.
2582 + *
2583 + * @since 2.14.2
2584 + *
2585 + * @param string $content HTML or text.
2586 + * @return string Plain text, whitespace collapsed.
2587 + */
2588 + private static function reading_text_of(string $content): string {
2589 + if ('' === $content) {
2590 + return '';
2591 + }
2592 +
2593 + if (!class_exists('\ThinkRank\SEO\Word_Count_Index')) {
2594 + require_once THINKRANK_PLUGIN_DIR . 'includes/seo/class-word-count-index.php';
2595 + }
2596 +
2597 + return \ThinkRank\SEO\Word_Count_Index::reading_text($content);
2306 2598 }
2307 2599
2308 2600 /**
2309 2601 * Get existing score data for a post from database