3v4l.org

run code in 300+ PHP versions simultaneously
<?php use A\B as foo; class Foo { }
Output for 5.3.0 - 5.3.28, 5.4.0 - 5.4.29
Fatal error: Cannot declare class Foo because the name is already in use in /in/cM12O on line 3
Process exited with code 255.
preferences:
174.83 ms | 1395 KiB | 66 Q