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<?php var_dump(array_map(function($value){ return $value['id']; }, array(array('id' => 5), array('id' => 8)))); ?>
based on J16iR
Output for 5.3.0 - 7.1.0
array(2) { [0]=> int(5) [1]=> int(8) }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/Eu6Ms on line 3
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, expecting ')' in /in/Eu6Ms on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/Eu6Ms on line 3
Process exited with code 255.