3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; while(strpos($a, "aa")!==false ||strpos($a, "ba")!==false) { $a = str_replace(array("aa", "ba"), "a", $a); } echo $a;
based on 9tGfR
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
a
Output for hhvm-3.10.0

Process exited with code 153.