3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(1, 2, 3, 4, 5); $b = array_keys(function($i) { return $a[$i]*2; }); var_dump($b)
Output for 5.4.0 - 5.4.16
Parse error: syntax error, unexpected end of file in /in/Gkccj on line 7
Process exited with code 255.
Output for 5.3.0 - 5.3.26
Parse error: syntax error, unexpected $end in /in/Gkccj on line 7
Process exited with code 255.