3v4l.org

run code in 300+ PHP versions simultaneously
<?php filter_var('$env', FILTER_VALIDATE_INT)
Output for 5.6.38, 7.1.0 - 7.1.23, 7.2.0 - 7.2.11
Parse error: syntax error, unexpected end of file in /in/S8vks on line 3
Process exited with code 255.
preferences:
171.61 ms | 1395 KiB | 44 Q