Online PHP editor | refs for lr9uS

<?php $str = <<<STR <img/onerror=alert(1) src=ONE <img onerror=alert(1) src=TWO> <img/ onerror=alert(1) src=THREE// <img/onerror=alert(1) src=FOUR> STR; echo preg_replace('#<img/?\s*[^>/x{0C}]*(?=src\s*=)(?:src\s*=\s*["\']?([^"\'<>\s]*)["\']?[^>/x{0C}]*)?(?:>|//|\x{0C})#isu', '$1', $str);