3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; while(strpos($Content, "aa") ||strpos($Content, "ba")) { $a = str_replace(array("aa", "ba"), "a", $a); } echo $a;

preferences:
38.11 ms | 402 KiB | 5 Q