3v4l.org

run code in 300+ PHP versions simultaneously
<?php $before = html_entity_decode("&nbsp;") . "&nbsp;abc&nbsp;xyz&nbsp;"; $pattern = '~^(\xC2\xA0|&nbsp;)*(.*?)(?1)*$~'; $after = preg_replace($pattern, '$2', $before); var_dump($before, $after);

preferences:
23.89 ms | 406 KiB | 5 Q