3v4l.org

run code in 300+ PHP versions simultaneously
<?php use Foo as a; use Bar as A; echo a::class;
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.22
Fatal error: Cannot use Bar as A because the name is already in use in /in/uqoig on line 4
Process exited with code 255.
preferences:
187.05 ms | 1399 KiB | 58 Q