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preg_replace_callback_offset() - preg_replace_callback() with offset capturing.
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<?php | |
/** | |
* preg_replace_callback_offset() | |
* | |
* preg_replace_callback() with offset capturing. | |
* | |
* Usage: | |
* | |
* Works exactly like preg_replace_callback() but differs in passing the matches to the callback function. | |
* Matches are as if using preg_match() with the PREG_OFFSET_CAPTURE flag: | |
* | |
* $match[$captureGroup] = array(0 => (string) $matchedString, 1 => (int) $subjectStringOffset) | |
* | |
* @author hakre <http://hakre.wordpress.com> | |
* @copyright Copyright (c) 2013 by hakre | |
* @revision 4 | |
* | |
* @link http://php.net/preg_replace_callback | |
* @link http://php.net/preg_match | |
* | |
* @param string $pattern | |
* @param callable $callback | |
* @param string|array $subject | |
* @param int $limit (optional) | |
* @param int $count (optional) | |
* | |
* @return array|bool|mixed|string | |
*/ | |
function preg_replace_callback_offset($pattern, $callback, $subject, $limit = -1, &$count = 0) { | |
if (is_array($subject)) { | |
foreach ($subject as &$subSubject) { | |
$subSubject = preg_replace_callback_offset($pattern, $callback, $subSubject, $limit, $subCount); | |
$count += $subCount; | |
} | |
return $subject; | |
} | |
if (is_array($pattern)) { | |
foreach ($pattern as $subPattern) { | |
$subject = preg_replace_callback_offset($subPattern, $callback, $subject, $limit, $subCount); | |
$count += $subCount; | |
} | |
return $subject; | |
} | |
$limit = max(-1, (int)$limit); | |
$count = 0; | |
$offset = 0; | |
$buffer = (string)$subject; | |
while ($limit === -1 || $count < $limit) { | |
$result = preg_match($pattern, $buffer, $matches, PREG_OFFSET_CAPTURE, $offset); | |
if (FALSE === $result) return FALSE; | |
if (!$result) break; | |
$pos = $matches[0][1]; | |
$len = strlen($matches[0][0]); | |
$replace = call_user_func($callback, $matches); | |
$buffer = substr_replace($buffer, $replace, $pos, $len); | |
$offset = $pos + strlen($replace); | |
$count++; | |
} | |
return $buffer; | |
} |
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So usefull! Thanks!