3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array('a' => 'b'); echo isset($a['a']); echo print($a['a']); echo strlen($a['a']);
based on kedZb
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
1b11
Output for hhvm-3.10.0

Process exited with code 153.