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run code in 200+ php & hhvm versions
Bugs & Features
<?php $alias_list = []; $alias_autoloader = function($class_name) use (&$alias_list) { var_dump($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 tmS4m
Output for 7.0.0 - 7.2.0
array(2) { ["Bar"]=> string(3) "Foo" ["BarCollision"]=> string(3) "Foo" } Fatal error: Uncaught Error: Class 'Bar' not found in /in/pb7fE:36 Stack trace: #0 {main} thrown in /in/pb7fE on line 36
Process exited with code 255.
Output for 5.4.10 - 5.6.28
array(2) { ["Bar"]=> string(3) "Foo" ["BarCollision"]=> string(3) "Foo" } Fatal error: Class 'Bar' not found in /in/pb7fE on line 36
Process exited with code 255.
Output for 5.3.20 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/pb7fE on line 3
Process exited with code 255.