3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array_fill(0, 10000, ''); $b = &$a; for ($i = 0; $i < 10000; $i++) { array_key_exists($i, $a); }
Output for 7.0.0 - 7.1.0
Output for 4.3.0 - 5.6.28

Process exited with code 137.