3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 0; if ('UNLOCK' ==== $a) { echo "U\n"; } else { echo "D\n"; }
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Parse error: syntax error, unexpected '=' in /in/qVTRI on line 4
Process exited with code 255.
preferences:
204.49 ms | 1395 KiB | 66 Q