3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo { class Bar {} } namespace Foo { use Bar; }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.29, 7.4.0 - 7.4.21, 8.0.0 - 8.0.8
Fatal error: Cannot use Bar as Bar because the name is already in use in /in/8iZWh on line 8
Process exited with code 255.
preferences:
187.31 ms | 1001 KiB | 7 Q