3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array('a' => 10, 'z' => 10, 'c' => 10, 'b' => 11, 'd' => 10); function cmp($a, $b) {    if ($a == $b) {        return 0;    }    return ($a < $b) ? -1 : 1;} uasort($a,'cmp'); print_r($a);
Output for 5.4.0 - 5.4.31
Parse error: syntax error, unexpected '$b' (T_VARIABLE) in /in/oTRr7 on line 3
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, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_VARIABLE in /in/oTRr7 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_VARIABLE in /in/oTRr7 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/oTRr7 on line 3
Process exited with code 255.
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202.2 ms | 1395 KiB | 122 Q