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run code in 200+ php & hhvm versions
Bugs & Features
<?php $arr = array('hey' => 1, 'there' => 0, 'blimpie' => 2); $arr = array_keys(array_filter($arr), function($i) { return $i == 2; }); print_r($arr);
based on QUST0
Output for 5.3.0 - 7.3.0rc2
Notice: Object of class Closure could not be converted to int in /in/GPOC1 on line 4 Notice: Object of class Closure could not be converted to int in /in/GPOC1 on line 4 Array ( [0] => hey )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/GPOC1 on line 4
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/GPOC1 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/GPOC1 on line 4
Process exited with code 255.