3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(); $arrayKey = '[0][1]'; $a[0][1] = "two levels deep"; $vars = function($str) use ($vars) { $c = function($v, $w) {return $w ? $v[$w] : $v;}; return array_reduce(preg_split('~\[\'|\'\]~', $str), $c, $vars); }; echo $vars($arrayKey);
based on c6Lrs
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: vars in /in/a8fff on line 8
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: vars in /in/a8fff on line 12
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/a8fff on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/a8fff on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/a8fff on line 8
Process exited with code 255.