Online PHP editor | refs for P1Zh1

<?php $re = '/([a-z0-9$])\1+|(?:([a-z0-9$])(?!\2))+/m'; $str = '$$$ 12345 aaa bbb ccc ddd eee 678 $$$ aaabbbbccc aaa-bbb-ddd aab aaaaaabbbbbbbbbbbbbc a000000009999999888888 abc000000009999999888888abd f 123fff dddk3ff333fk333'; preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0); foreach ($matches as $match) { echo "$match[0]\n"; }