Online PHP editor | refs for EXW1m

<?php $pattern = "/^[a-zA-Z0-9._-]+@[a-zA-Z0-9-]+\.[a-zA-Z.]{2,5}$/"; /*$pattern = "/^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$/";*/ $replacement = "**************"; echo preg_replace($pattern, $replacement, "I want to replace this.is.an@email.com with stars"); echo "\n"; echo preg_replace("/a/", "A", "I want to capitalise all A's");