3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo; use Bar\Baz as Biz; class Biz {}
Output for 5.3.28 - 5.3.29, 5.4.18 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.14 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Cannot declare class Foo\Biz because the name is already in use in /in/Umerv on line 7
Process exited with code 255.
Output for 7.0.0 - 7.0.6
Output for 5.3.0 - 5.3.27, 5.4.0 - 5.4.17
Fatal error: Cannot declare class Foo\Biz because the name is already in use in /in/05tQP on line 7
Process exited with code 255.
preferences:
193.74 ms | 402 KiB | 261 Q