3v4l.org

run code in 300+ PHP versions simultaneously
<?php $usernameSearch = 'd' if (false === !preg_match('/[^a-z_\-0-9]/i', $usernameSearch) || strlen($usernameSearch) > 14) { echo 'false'; } else { echo 'true'; }
Output for 5.4.0 - 5.4.30
Parse error: syntax error, unexpected 'if' (T_IF) in /in/D6T4V on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.28
Parse error: syntax error, unexpected T_IF in /in/D6T4V on line 4
Process exited with code 255.
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191.34 ms | 1399 KiB | 67 Q