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run code in 150+ php & hhvm versions
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<?php function simplify($el) { return $el['b']; } $a = array( array( 'a' => 'x', 'b' => 'asdasd', ), array( 'a' => 'f', 'b' => '123123qwe', ), ); echo '<pre>'.print_r(array_map(function($e) { return $e['b']; }, $a),true).'</pre>'; ?>
Output for 5.3.0 - 5.6.28, hhvm-3.10.0 - 3.13.2, 7.0.0 - 7.1.0
<pre>Array ( [0] => asdasd [1] => 123123qwe ) </pre>
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/K0sRb on line 16
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/K0sRb on line 16
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/K0sRb on line 16
Process exited with code 255.