3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php class A{} class B{} class_alias('A', 'B');
Output for 7.0.0 - 7.1.0
Warning: Cannot declare class B, because the name is already in use in /in/YOXCd on line 5
Output for 5.3.0 - 5.6.28
Warning: Cannot redeclare class B in /in/YOXCd on line 5
Output for 5.0.0 - 5.2.17
Fatal error: Call to undefined function class_alias() in /in/YOXCd on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: class_alias() in /in/YOXCd on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: class_alias() in /in/YOXCd on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: class_alias() in /in/YOXCd on line 5