3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { static function b($c) { return (string) $c; }} var_dump(array_map('A::b', array(3)));
Output for 5.2.2 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.2.18, 8.3.0 - 8.3.6
array(1) { [0]=> string(1) "3" }
Output for 5.1.2 - 5.1.6, 5.2.0 - 5.2.1
Warning: array_map(): An error occurred while invoking the map callback in /in/h6GPZ on line 4 NULL
Output for 5.1.0 - 5.1.1
array(1) { [0]=>
Process exited with code 139.
Output for 5.0.0 - 5.0.5
Warning: array_map(): The first argument, 'A::b', should be either NULL or a valid callback in /in/h6GPZ on line 4 NULL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/h6GPZ on line 3
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 T_STATIC, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/h6GPZ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/h6GPZ on line 3
Process exited with code 255.

preferences:
298.39 ms | 401 KiB | 459 Q