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<?php $mainArray = array( 0 =>array( "key1" => array(7,4,5), 'key2' => array('cc','aa') ) ); foreach($mainArray as &$secondArray){ array_multisort($secondArray[$key]); } var_dump($mainArray); ?>
Output for 5.1.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: key in /in/IK5d7 on line 10 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/IK5d7 on line 10 array(1) { [0]=> &array(3) { ["key1"]=> array(3) { [0]=> int(7) [1]=> int(4) [2]=> int(5) } ["key2"]=> array(2) { [0]=> string(2) "cc" [1]=> string(2) "aa" } [""]=> NULL } }
Output for hhvm-3.10.0 - 3.12.0
Warning: Invalid operand type was used: array_multisort expects array(s) in /in/IK5d7 on line 10 array(1) { [0]=> &array(3) { ["key1"]=> array(3) { [0]=> int(7) [1]=> int(4) [2]=> int(5) } ["key2"]=> array(2) { [0]=> string(2) "cc" [1]=> string(2) "aa" } [""]=> NULL } }
Output for 5.0.4 - 5.0.5
Notice: Undefined variable: key in /in/IK5d7 on line 10 Notice: Undefined index: in /in/IK5d7 on line 10 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/IK5d7 on line 10 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 5.0.0 - 5.0.3
Notice: Undefined variable: key in /in/IK5d7 on line 10 Notice: Undefined index: in /in/IK5d7 on line 10 Warning: array_multisort(): Argument #1 is expected to be an array or a sort flag in /in/IK5d7 on line 10 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 '$' in /in/IK5d7 on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/IK5d7 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/IK5d7 on line 9
Process exited with code 255.