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<?php $str = "&#233333;"; $str = preg_replace_callback( '/\&\#([0-9]+)\;/m', function($matches) { var_dump($matches); return strtoupper($matches[1]); }, $str ); echo $str;
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
array(2) { [0]=> string(9) "&#233333;" [1]=> string(6) "233333" } 233333

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