3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = "aaaaaaaaaaaaaaaababababababababa"; echo str_replace(array("aa", "ba"), "a", $a);
based on aT1SE
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
aaaaaaaaaaaaaaaa
Output for hhvm-3.10.0

Process exited with code 153.