3v4l.org

run code in 300+ PHP versions simultaneously
<?php $mainArray = array( 0 =>array( "key1" => array(7,4,5), 'key2' => array('cc','aa') ) ); foreach($mainArray as &$secondArray){ array_multisort($secondArray); } var_dump($mainArray); ?>
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(1) { [0]=> &array(2) { ["key2"]=> array(2) { [0]=> string(2) "cc" [1]=> string(2) "aa" } ["key1"]=> array(3) { [0]=> int(7) [1]=> int(4) [2]=> int(5) } } }
Output for 5.0.0 - 5.0.5
array(1) { [0]=> &array(2) { ["key1"]=> array(3) { [0]=> int(7) [1]=> int(4) [2]=> int(5) } ["key2"]=> array(2) { [0]=> string(2) "cc" [1]=> string(2) "aa" } } }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/dtQX0 on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/dtQX0 on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/dtQX0 on line 9
Process exited with code 255.

preferences:
249.78 ms | 401 KiB | 366 Q