3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $alias_list = []; $alias_autoloader = function($class_name) use (&$alias_list) { if (isset($alias_list[strtolower($class_name)])) { class_alias($class_name, $alias_list[strtolower($class_name)]); return true; } }; $alias = function($from, $to) use (&$alias_list) { $alias_list[$to] = $from; }; spl_autoload_register($alias_autoloader); class Foo { function test() { return get_class_name($this); } } class BarCollision extends Foo { } $alias('Foo', 'Bar'); $alias('Foo', 'BarCollision'); $b = new Bar; $c = new BarCollision; var_dump($b->test(), $c->test());
based on X2eID
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Class 'Bar' not found in /in/tmS4m:35 Stack trace: #0 {main} thrown in /in/tmS4m on line 35
Process exited with code 255.
Output for hhvm-3.11.1 - 3.17.3
Fatal error: Uncaught Error: Class undefined: Bar in /in/tmS4m:35 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.1
Fatal error: Class undefined: Bar in /in/tmS4m on line 35
Process exited with code 255.
Output for 5.5.0 - 5.6.30
Fatal error: Class 'Bar' not found in /in/tmS4m on line 35
Process exited with code 255.