| 1 |
<?php |
| 2 |
/** |
| 3 |
* ConvertKit Shortcode Post Helper class. |
| 4 |
* |
| 5 |
* @package ConvertKit |
| 6 |
* @author ConvertKit |
| 7 |
*/ |
| 8 |
|
| 9 |
/** |
| 10 |
* Helper methods to find, insert, update and delete shortcodes within a WordPress Post's content. |
| 11 |
* |
| 12 |
* @package ConvertKit |
| 13 |
* @author ConvertKit |
| 14 |
*/ |
| 15 |
class ConvertKit_Shortcode_Post_Helper { |
| 16 |
|
| 17 |
/** |
| 18 |
* The element-level HTML tags treated as top-level element boundaries when |
| 19 |
* resolving an insertion position. |
| 20 |
* |
| 21 |
* This is the same set WordPress' wpautop() recognises as element-level, |
| 22 |
* so the segmentation matches how WordPress itself conceptualises Classic |
| 23 |
* editor content. |
| 24 |
* |
| 25 |
* @since 3.4.0 |
| 26 |
* |
| 27 |
* @var string |
| 28 |
*/ |
| 29 |
const ELEMENT_LEVEL_TAGS = 'address|article|aside|blockquote|details|dd|div|dl|dt|' . |
| 30 |
'figcaption|figure|footer|form|h1|h2|h3|h4|h5|h6|header|hgroup|hr|' . |
| 31 |
'main|menu|nav|ol|p|pre|section|table|ul'; |
| 32 |
|
| 33 |
/** |
| 34 |
* Finds all occurrences of the given shortcode in a Post's content. |
| 35 |
* |
| 36 |
* @since 3.4.0 |
| 37 |
* |
| 38 |
* @param int $post_id Post ID. |
| 39 |
* @param string $shortcode_tag Programmatic Shortcode Tag. |
| 40 |
* @return WP_Error|bool|array |
| 41 |
*/ |
| 42 |
public static function find( $post_id, $shortcode_tag ) { |
| 43 |
|
| 44 |
// Get Post. |
| 45 |
$post = get_post( $post_id ); |
| 46 |
if ( ! $post ) { |
| 47 |
return new WP_Error( |
| 48 |
'convertkit_shortcode_post_helper_post_not_found', |
| 49 |
/* translators: %d: post ID */ |
| 50 |
sprintf( __( 'No post exists with ID %d.', 'convertkit' ), $post_id ) |
| 51 |
); |
| 52 |
} |
| 53 |
|
| 54 |
// Match all occurrences of the shortcode in the Post's content. |
| 55 |
$matches = self::match_shortcodes( $post->post_content, $shortcode_tag ); |
| 56 |
$found = array(); |
| 57 |
|
| 58 |
foreach ( $matches as $occurrence_index => $match ) { |
| 59 |
$found[] = array( |
| 60 |
// Zero-based index of this occurrence among occurrences of |
| 61 |
// this shortcode in the post. |
| 62 |
'occurrence_index' => (int) $occurrence_index, |
| 63 |
'attrs' => self::parse_attrs( $match ), |
| 64 |
); |
| 65 |
} |
| 66 |
|
| 67 |
// If no shortcodes found, return false. |
| 68 |
if ( empty( $found ) ) { |
| 69 |
return false; |
| 70 |
} |
| 71 |
|
| 72 |
return $found; |
| 73 |
|
| 74 |
} |
| 75 |
|
| 76 |
/** |
| 77 |
* Inserts a new shortcode into the Post's content at the specified |
| 78 |
* position. |
| 79 |
* |
| 80 |
* @since 3.4.0 |
| 81 |
* |
| 82 |
* @param int $post_id Post ID. |
| 83 |
* @param string $shortcode_tag Programmatic Shortcode Tag. |
| 84 |
* @param array $attrs Shortcode Attributes. |
| 85 |
* @param string $position One of 'prepend', 'append', 'index'. |
| 86 |
* @param int $index Zero-based top-level element index; only used when $position is 'index'. |
| 87 |
* @return WP_Error|array |
| 88 |
*/ |
| 89 |
public static function insert( $post_id, $shortcode_tag, $attrs, $position = 'append', $index = 0 ) { |
| 90 |
|
| 91 |
// If the index is negative, bail. |
| 92 |
if ( $position === 'index' && (int) $index < 0 ) { |
| 93 |
return new WP_Error( |
| 94 |
'convertkit_shortcode_post_helper_invalid_index', |
| 95 |
sprintf( |
| 96 |
/* translators: %d: index */ |
| 97 |
__( 'The supplied index (%d) must be zero or a positive integer.', 'convertkit' ), |
| 98 |
(int) $index |
| 99 |
) |
| 100 |
); |
| 101 |
} |
| 102 |
|
| 103 |
// Get Post. |
| 104 |
$post = get_post( $post_id ); |
| 105 |
if ( ! $post ) { |
| 106 |
return new WP_Error( |
| 107 |
'convertkit_shortcode_post_helper_insert_post_not_found', |
| 108 |
/* translators: %d: post ID */ |
| 109 |
sprintf( __( 'No post exists with ID %d.', 'convertkit' ), $post_id ) |
| 110 |
); |
| 111 |
} |
| 112 |
|
| 113 |
// Build the shortcode string to insert. |
| 114 |
$shortcode = self::build_shortcode( $shortcode_tag, $attrs ); |
| 115 |
$content = $post->post_content; |
| 116 |
|
| 117 |
// Determine the byte offset of the start of each top-level element. |
| 118 |
$starts = self::get_element_starts( $content ); |
| 119 |
|
| 120 |
// Resolve $position into a concrete byte offset within the content. |
| 121 |
switch ( $position ) { |
| 122 |
case 'prepend': |
| 123 |
$insert_at = 0; |
| 124 |
break; |
| 125 |
|
| 126 |
case 'index': |
| 127 |
// Insert before the Nth top-level element. If no elements |
| 128 |
// exist, or the index is equal to / beyond count(), append |
| 129 |
// after all existing content — mirroring how array_splice() |
| 130 |
// treats an index equal to the array length. |
| 131 |
if ( empty( $starts ) || (int) $index >= count( $starts ) ) { |
| 132 |
$insert_at = strlen( $content ); |
| 133 |
} else { |
| 134 |
$insert_at = $starts[ (int) $index ]; |
| 135 |
} |
| 136 |
break; |
| 137 |
|
| 138 |
case 'append': |
| 139 |
default: |
| 140 |
$insert_at = strlen( $content ); |
| 141 |
break; |
| 142 |
} |
| 143 |
|
| 144 |
// Determine the occurrence index the new shortcode will have, by |
| 145 |
// counting how many existing occurrences of the same shortcode start |
| 146 |
// before the insertion offset. |
| 147 |
$occurrence_index = 0; |
| 148 |
foreach ( self::match_shortcodes( $content, $shortcode_tag ) as $match ) { |
| 149 |
if ( $match['offset'] < $insert_at ) { |
| 150 |
++$occurrence_index; |
| 151 |
} |
| 152 |
} |
| 153 |
|
| 154 |
// Splice the shortcode into the content at the resolved offset, |
| 155 |
// wrapped in blank lines so it sits as its own top-level element. |
| 156 |
// All other content is left byte-for-byte unchanged. |
| 157 |
$snippet = self::pad_snippet( $shortcode, $content, $insert_at ); |
| 158 |
$content = substr_replace( $content, $snippet, $insert_at, 0 ); |
| 159 |
|
| 160 |
// Update Post. |
| 161 |
$result = wp_update_post( |
| 162 |
array( |
| 163 |
'ID' => $post_id, |
| 164 |
'post_content' => $content, |
| 165 |
), |
| 166 |
true |
| 167 |
); |
| 168 |
|
| 169 |
// Bail if the update failed. |
| 170 |
if ( is_wp_error( $result ) ) { |
| 171 |
return $result; |
| 172 |
} |
| 173 |
|
| 174 |
// Return the occurrence index of the newly inserted shortcode. |
| 175 |
return array( |
| 176 |
'post_id' => $post_id, |
| 177 |
'occurrence_index' => $occurrence_index, |
| 178 |
); |
| 179 |
|
| 180 |
} |
| 181 |
|
| 182 |
/** |
| 183 |
* Updates the attributes of an existing shortcode in the Post's content. |
| 184 |
* |
| 185 |
* @since 3.4.0 |
| 186 |
* |
| 187 |
* @param int $post_id Post ID. |
| 188 |
* @param string $shortcode_tag Programmatic Shortcode Tag. |
| 189 |
* @param int $occurrence_index Zero-based occurrence index to update. |
| 190 |
* @param array $attrs Shortcode Attributes. |
| 191 |
* @return WP_Error|array |
| 192 |
*/ |
| 193 |
public static function update( $post_id, $shortcode_tag, $occurrence_index, $attrs ) { |
| 194 |
|
| 195 |
// Get Post. |
| 196 |
$post = get_post( $post_id ); |
| 197 |
if ( ! $post ) { |
| 198 |
return new WP_Error( |
| 199 |
'convertkit_shortcode_post_helper_update_post_not_found', |
| 200 |
/* translators: %d: post ID */ |
| 201 |
sprintf( __( 'No post exists with ID %d.', 'convertkit' ), $post_id ) |
| 202 |
); |
| 203 |
} |
| 204 |
|
| 205 |
// Match all occurrences of the shortcode. |
| 206 |
$matches = self::match_shortcodes( $post->post_content, $shortcode_tag ); |
| 207 |
|
| 208 |
// Bail if the requested occurrence does not exist. |
| 209 |
if ( ! isset( $matches[ (int) $occurrence_index ] ) ) { |
| 210 |
return new WP_Error( |
| 211 |
'convertkit_shortcode_post_helper_occurrence_not_found', |
| 212 |
sprintf( |
| 213 |
/* translators: 1: shortcode tag, 2: occurrence index, 3: post ID */ |
| 214 |
__( 'No occurrence #%2$d of shortcode %1$s found in post %3$d.', 'convertkit' ), |
| 215 |
$shortcode_tag, |
| 216 |
(int) $occurrence_index, |
| 217 |
$post_id |
| 218 |
) |
| 219 |
); |
| 220 |
} |
| 221 |
|
| 222 |
// Build the replacement shortcode, merging new attributes over existing. |
| 223 |
$match = $matches[ (int) $occurrence_index ]; |
| 224 |
$merged_attrs = array_merge( self::parse_attrs( $match ), (array) $attrs ); |
| 225 |
$replacement = self::build_shortcode( $shortcode_tag, $merged_attrs ); |
| 226 |
|
| 227 |
// Replace the matched shortcode text with the rebuilt shortcode. |
| 228 |
$content = self::replace_match( $post->post_content, $match, $replacement ); |
| 229 |
|
| 230 |
// Update Post. |
| 231 |
$result = wp_update_post( |
| 232 |
array( |
| 233 |
'ID' => $post_id, |
| 234 |
'post_content' => $content, |
| 235 |
), |
| 236 |
true |
| 237 |
); |
| 238 |
|
| 239 |
// Bail if the update failed. |
| 240 |
if ( is_wp_error( $result ) ) { |
| 241 |
return $result; |
| 242 |
} |
| 243 |
|
| 244 |
// Return the occurrence index that was updated. |
| 245 |
return array( |
| 246 |
'post_id' => $post_id, |
| 247 |
'occurrence_index' => (int) $occurrence_index, |
| 248 |
); |
| 249 |
|
| 250 |
} |
| 251 |
|
| 252 |
/** |
| 253 |
* Deletes a specific shortcode from the Post's content. |
| 254 |
* |
| 255 |
* @since 3.4.0 |
| 256 |
* |
| 257 |
* @param int $post_id Post ID. |
| 258 |
* @param string $shortcode_tag Programmatic Shortcode Tag. |
| 259 |
* @param int $occurrence_index Zero-based occurrence index to delete. |
| 260 |
* @return WP_Error|array |
| 261 |
*/ |
| 262 |
public static function delete( $post_id, $shortcode_tag, $occurrence_index ) { |
| 263 |
|
| 264 |
// Get Post. |
| 265 |
$post = get_post( $post_id ); |
| 266 |
if ( ! $post ) { |
| 267 |
return new WP_Error( |
| 268 |
'convertkit_shortcode_post_helper_delete_post_not_found', |
| 269 |
/* translators: %d: post ID */ |
| 270 |
sprintf( __( 'No post exists with ID %d.', 'convertkit' ), $post_id ) |
| 271 |
); |
| 272 |
} |
| 273 |
|
| 274 |
// Match all occurrences of the shortcode. |
| 275 |
$matches = self::match_shortcodes( $post->post_content, $shortcode_tag ); |
| 276 |
|
| 277 |
// Bail if the requested occurrence does not exist. |
| 278 |
if ( ! isset( $matches[ (int) $occurrence_index ] ) ) { |
| 279 |
return new WP_Error( |
| 280 |
'convertkit_shortcode_post_helper_occurrence_not_found', |
| 281 |
sprintf( |
| 282 |
/* translators: 1: shortcode tag, 2: occurrence index, 3: post ID */ |
| 283 |
__( 'No occurrence #%2$d of shortcode %1$s found in post %3$d.', 'convertkit' ), |
| 284 |
$shortcode_tag, |
| 285 |
(int) $occurrence_index, |
| 286 |
$post_id |
| 287 |
) |
| 288 |
); |
| 289 |
} |
| 290 |
|
| 291 |
// Remove the matched shortcode text from the content. |
| 292 |
$content = self::replace_match( $post->post_content, $matches[ (int) $occurrence_index ], '' ); |
| 293 |
|
| 294 |
// Update Post. |
| 295 |
$result = wp_update_post( |
| 296 |
array( |
| 297 |
'ID' => $post_id, |
| 298 |
'post_content' => $content, |
| 299 |
), |
| 300 |
true |
| 301 |
); |
| 302 |
|
| 303 |
// Bail if the update failed. |
| 304 |
if ( is_wp_error( $result ) ) { |
| 305 |
return $result; |
| 306 |
} |
| 307 |
|
| 308 |
// Return the occurrence index that was deleted. |
| 309 |
return array( |
| 310 |
'post_id' => $post_id, |
| 311 |
'occurrence_index' => (int) $occurrence_index, |
| 312 |
); |
| 313 |
|
| 314 |
} |
| 315 |
|
| 316 |
/** |
| 317 |
* Returns all matches of the given shortcode tag within the content, in |
| 318 |
* document order. |
| 319 |
* |
| 320 |
* Each match is an array of: |
| 321 |
* - 'text' The full matched shortcode string (e.g. `[convertkit_form form="1"]`). |
| 322 |
* - 'offset' Its byte offset within the content. |
| 323 |
* - 'atts' The raw attribute string only (e.g. `form="1"`), suitable for |
| 324 |
* passing directly to shortcode_parse_atts(). |
| 325 |
* |
| 326 |
* @since 3.4.0 |
| 327 |
* |
| 328 |
* @param string $content Post content. |
| 329 |
* @param string $shortcode_tag Programmatic Shortcode Tag. |
| 330 |
* @return array |
| 331 |
*/ |
| 332 |
private static function match_shortcodes( $content, $shortcode_tag ) { |
| 333 |
|
| 334 |
// Build a shortcode regex scoped to this single tag. |
| 335 |
$pattern = get_shortcode_regex( array( $shortcode_tag ) ); |
| 336 |
|
| 337 |
// Bail if there are no matches. |
| 338 |
if ( ! preg_match_all( '/' . $pattern . '/', $content, $matches, PREG_OFFSET_CAPTURE ) ) { |
| 339 |
return array(); |
| 340 |
} |
| 341 |
|
| 342 |
// Build array of shortcode matches. |
| 343 |
$found = array(); |
| 344 |
foreach ( $matches[0] as $i => $match ) { |
| 345 |
$found[] = array( |
| 346 |
'text' => $match[0], |
| 347 |
'offset' => (int) $match[1], |
| 348 |
'atts' => isset( $matches[3][ $i ][0] ) ? trim( (string) $matches[3][ $i ][0] ) : '', |
| 349 |
); |
| 350 |
} |
| 351 |
|
| 352 |
return $found; |
| 353 |
|
| 354 |
} |
| 355 |
|
| 356 |
/** |
| 357 |
* Parses the attributes of a single matched shortcode into a key/value |
| 358 |
* array. |
| 359 |
* |
| 360 |
* @since 3.4.0 |
| 361 |
* |
| 362 |
* @param array $shortcode A match from match_shortcodes(). |
| 363 |
* @return array |
| 364 |
*/ |
| 365 |
private static function parse_attrs( $shortcode ) { |
| 366 |
|
| 367 |
// Parse the raw attribute string (e.g. `form="1"`). shortcode_parse_atts() |
| 368 |
// expects only the attributes, without the surrounding brackets or tag name. |
| 369 |
$attrs = shortcode_parse_atts( $shortcode['atts'] ); |
| 370 |
|
| 371 |
// Discard any positional (non-string keyed) attributes, keeping only |
| 372 |
// named attributes. |
| 373 |
foreach ( array_keys( $attrs ) as $key ) { |
| 374 |
if ( ! is_string( $key ) ) { |
| 375 |
unset( $attrs[ $key ] ); |
| 376 |
} |
| 377 |
} |
| 378 |
|
| 379 |
return $attrs; |
| 380 |
|
| 381 |
} |
| 382 |
|
| 383 |
/** |
| 384 |
* Builds a self-closing shortcode string from a tag and attributes. |
| 385 |
* |
| 386 |
* @since 3.4.0 |
| 387 |
* |
| 388 |
* @param string $shortcode_tag Programmatic Shortcode Tag. |
| 389 |
* @param array $attrs Shortcode Attributes. |
| 390 |
* @return string |
| 391 |
*/ |
| 392 |
private static function build_shortcode( $shortcode_tag, $attrs ) { |
| 393 |
|
| 394 |
$shortcode = '[' . $shortcode_tag; |
| 395 |
|
| 396 |
foreach ( (array) $attrs as $key => $value ) { |
| 397 |
// Skip empty attribute names. |
| 398 |
if ( ! is_string( $key ) || '' === $key ) { |
| 399 |
continue; |
| 400 |
} |
| 401 |
|
| 402 |
$shortcode .= sprintf( ' %s="%s"', $key, esc_attr( (string) $value ) ); |
| 403 |
} |
| 404 |
|
| 405 |
$shortcode .= ']'; |
| 406 |
|
| 407 |
return $shortcode; |
| 408 |
|
| 409 |
} |
| 410 |
|
| 411 |
/** |
| 412 |
* Replaces a single matched shortcode occurrence with the replacement |
| 413 |
* string. |
| 414 |
* |
| 415 |
* @since 3.4.0 |
| 416 |
* |
| 417 |
* @param string $content Post content. |
| 418 |
* @param array $atts A match from match_shortcodes(). |
| 419 |
* @param string $replacement Replacement string (empty string to delete). |
| 420 |
* @return string |
| 421 |
*/ |
| 422 |
private static function replace_match( $content, $atts, $replacement ) { |
| 423 |
|
| 424 |
return substr_replace( |
| 425 |
$content, |
| 426 |
$replacement, |
| 427 |
$atts['offset'], |
| 428 |
strlen( $atts['text'] ) |
| 429 |
); |
| 430 |
|
| 431 |
} |
| 432 |
|
| 433 |
/** |
| 434 |
* Wraps a shortcode snippet in blank-line padding so that, once inserted |
| 435 |
* at the given offset, it sits as its own top-level element. |
| 436 |
* |
| 437 |
* @since 3.4.0 |
| 438 |
* |
| 439 |
* @param string $shortcode The shortcode string to insert. |
| 440 |
* @param string $content The content the shortcode is being inserted into. |
| 441 |
* @param int $offset Byte offset within $content the shortcode will be inserted at. |
| 442 |
* @return string |
| 443 |
*/ |
| 444 |
private static function pad_snippet( $shortcode, $content, $offset ) { |
| 445 |
|
| 446 |
// Determine the text immediately before and after the insertion point. |
| 447 |
$before = substr( $content, 0, $offset ); |
| 448 |
$after = substr( $content, $offset ); |
| 449 |
|
| 450 |
// Add a leading blank line unless the shortcode is at the start of the |
| 451 |
// content, or already preceded by a blank line. |
| 452 |
$lead = ( $before === '' || preg_match( '/\R\R\s*$/', $before ) ) ? '' : "\n\n"; |
| 453 |
|
| 454 |
// Add a trailing blank line unless the shortcode is at the end of the |
| 455 |
// content, or already followed by a blank line. |
| 456 |
$trail = ( $after === '' || preg_match( '/^\s*\R\R/', $after ) ) ? '' : "\n\n"; |
| 457 |
|
| 458 |
return $lead . $shortcode . $trail; |
| 459 |
|
| 460 |
} |
| 461 |
|
| 462 |
/** |
| 463 |
* Returns the byte offset of the start of each top-level element in the |
| 464 |
* content, in document order. |
| 465 |
* |
| 466 |
* Uses WP_HTML_Tag_Processor (WP 6.2+) for nesting-aware structure, paired |
| 467 |
* with a regex for the byte offsets the tag processor does not expose. |
| 468 |
* Falls back to regex alone on older WordPress versions. |
| 469 |
* |
| 470 |
* @since 3.4.0 |
| 471 |
* |
| 472 |
* @param string $content Post content. |
| 473 |
* @return array |
| 474 |
*/ |
| 475 |
private static function get_element_starts( $content ) { |
| 476 |
|
| 477 |
if ( trim( (string) $content ) === '' ) { |
| 478 |
return array(); |
| 479 |
} |
| 480 |
|
| 481 |
// Candidate offsets, one per regex-matched element-level opener. |
| 482 |
$pattern = '/<(' . self::ELEMENT_LEVEL_TAGS . ')\b[^>]*>.*?<\/\1>/is'; |
| 483 |
if ( ! preg_match_all( $pattern, $content, $matches, PREG_OFFSET_CAPTURE ) ) { |
| 484 |
return array(); |
| 485 |
} |
| 486 |
|
| 487 |
// Fallback for WP < 6.2: regex offsets verbatim, no nesting awareness. |
| 488 |
if ( ! class_exists( 'WP_HTML_Tag_Processor' ) ) { |
| 489 |
$starts = array(); |
| 490 |
foreach ( $matches[0] as $match ) { |
| 491 |
$starts[] = (int) $match[1]; |
| 492 |
} |
| 493 |
return $starts; |
| 494 |
} |
| 495 |
|
| 496 |
// Per-tag queue of regex offsets in document order. |
| 497 |
$queues = array(); |
| 498 |
foreach ( $matches[1] as $i => $tag_match ) { |
| 499 |
$queues[ strtoupper( $tag_match[0] ) ][] = (int) $matches[0][ $i ][1]; |
| 500 |
} |
| 501 |
|
| 502 |
// Walk with depth tracking; record offsets only for depth-zero openers. |
| 503 |
$processor = new WP_HTML_Tag_Processor( $content ); |
| 504 |
$starts = array(); |
| 505 |
$depth = 0; |
| 506 |
$element_level_tags = array_flip( explode( '|', strtoupper( self::ELEMENT_LEVEL_TAGS ) ) ); |
| 507 |
|
| 508 |
while ( $processor->next_tag( array( 'tag_closers' => 'visit' ) ) ) { |
| 509 |
$tag = $processor->get_tag(); |
| 510 |
|
| 511 |
if ( ! isset( $element_level_tags[ $tag ] ) ) { |
| 512 |
continue; |
| 513 |
} |
| 514 |
|
| 515 |
if ( $processor->is_tag_closer() ) { |
| 516 |
if ( $depth > 0 ) { |
| 517 |
--$depth; |
| 518 |
} |
| 519 |
continue; |
| 520 |
} |
| 521 |
|
| 522 |
$offset = array_shift( $queues[ $tag ] ); |
| 523 |
|
| 524 |
if ( $depth === 0 ) { |
| 525 |
$starts[] = $offset; |
| 526 |
} |
| 527 |
|
| 528 |
if ( $tag !== 'HR' ) { |
| 529 |
++$depth; |
| 530 |
} |
| 531 |
} |
| 532 |
|
| 533 |
// Treat blank line separated text as paragraphs, matching the logic in wpautop(). |
| 534 |
$opener_prefix = '/^<(?:' . self::ELEMENT_LEVEL_TAGS . ')\b/i'; |
| 535 |
$offset = 0; |
| 536 |
foreach ( preg_split( '/(\R\R+)/', $content, -1, PREG_SPLIT_DELIM_CAPTURE ) as $i => $chunk ) { |
| 537 |
// Odd indices are the delimiters captured by PREG_SPLIT_DELIM_CAPTURE. |
| 538 |
if ( $i % 2 === 1 ) { |
| 539 |
$offset += strlen( $chunk ); |
| 540 |
continue; |
| 541 |
} |
| 542 |
|
| 543 |
$trimmed = trim( $chunk ); |
| 544 |
if ( $trimmed !== '' && ! preg_match( $opener_prefix, $trimmed ) ) { |
| 545 |
$starts[] = $offset + ( strlen( $chunk ) - strlen( ltrim( $chunk ) ) ); |
| 546 |
} |
| 547 |
|
| 548 |
$offset += strlen( $chunk ); |
| 549 |
} |
| 550 |
|
| 551 |
sort( $starts, SORT_NUMERIC ); |
| 552 |
|
| 553 |
return $starts; |
| 554 |
|
| 555 |
} |
| 556 |
|
| 557 |
} |
| 558 |
|
