3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array( '13-2014' => 'z', '14-2014' => 'b', '6-2014' => 'a', '5-2014' => 'x' ); uksort($array, function($a, $b) { return str_replace('-','',$a) < str_replace('-','',$b); }); print_r($array);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: uksort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/d8rtE on line 8 Array ( [14-2014] => b [13-2014] => z [6-2014] => a [5-2014] => x )
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Deprecated: uksort(): Returning bool from comparison function is deprecated, return an integer less than, equal to, or greater than zero in /in/d8rtE on line 10 Array ( [14-2014] => b [13-2014] => z [6-2014] => a [5-2014] => x )
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 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
Array ( [14-2014] => b [13-2014] => z [6-2014] => a [5-2014] => x )
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/d8rtE on line 8
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/d8rtE on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/d8rtE on line 8
Process exited with code 255.
preferences:
219.78 ms | 401 KiB | 328 Q