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run code in 150+ php & hhvm versions
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<?php $my_array = array( array(0=>"a", 1=>"b", 4=>"c"), array(3=>"z"), array(0=>"p", 2=>"k"), ); usort($my_array, function($a, $b) { if (count($a) == count($b)) { return 0; } return (count($a) < count($b)) ? -1 : 1; }); print_r($my_array);
Output for 5.3.0 - 7.1.0
Array ( [0] => Array ( [3] => z ) [1] => Array ( [0] => p [2] => k ) [2] => Array ( [0] => a [1] => b [4] => c ) )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/OdLCI on line 9
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/OdLCI on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/OdLCI on line 9
Process exited with code 255.