3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a =function ($str) { is_string(%1$s) ? strtolower(%1$s) : %1$s; }; var_dump($a('AAA'));
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '%', expecting ')' in /in/iZOI1 on line 4
Process exited with code 255.
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/iZOI1 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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/iZOI1 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/iZOI1 on line 3
Process exited with code 255.
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227.34 ms | 1395 KiB | 121 Q