3v4l.org

run code in 300+ PHP versions simultaneously
<?php (function() ($a) } echo $a; { echo "Hello World!"; })();
Output for 7.1.25 - 7.1.32, 7.2.0 - 7.2.22, 7.3.0 - 7.3.9
Parse error: syntax error, unexpected '(', expecting '{' in /in/TIo1A on line 2
Process exited with code 255.
preferences:
177.43 ms | 1395 KiB | 48 Q