3v4l.org

run code in 300+ PHP versions simultaneously
<?php switch(1) { default: echo 'a'; break; default: echo 'b'; break; }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
b
preferences:
208.58 ms | 1396 KiB | 109 Q