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run code in 150+ php & hhvm versions
Bugs & Features
<?php $array1 = array('a'=>'a','b'=>'b','c'=>'c','d' =>'d','e' =>'e'); $array2 = array('a','c','e'); $array = array_filter($array1, function($key) use ($array2) { return in_array($key, $array2); }, ARRAY_FILTER_USE_KEY); var_dump($array);
based on pDB2t
Output for 5.6.8 - 7.1.0
array(3) { ["a"]=> string(1) "a" ["c"]=> string(1) "c" ["e"]=> string(1) "e" }
Output for 5.3.0 - 5.5.35
Notice: Use of undefined constant ARRAY_FILTER_USE_KEY - assumed 'ARRAY_FILTER_USE_KEY' in /in/11JDo on line 7 Warning: array_filter() expects at most 2 parameters, 3 given in /in/11JDo on line 7 NULL
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/11JDo on line 5
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/11JDo on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/11JDo on line 5
Process exited with code 255.