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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($class_name)])) { class_alias($alias_list[strtolower($class_name)], $class_name); return true; } }; $alias = function($from, $to) use (&$alias_list) { $alias_list[strtolower($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 BJRPm
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function get_class_name() in /in/WiDKk:21 Stack trace: #0 /in/WiDKk(38): Foo->test() #1 {main} thrown in /in/WiDKk on line 21
Process exited with code 255.
Output for 5.4.10 - 5.6.28
Fatal error: Call to undefined function get_class_name() in /in/WiDKk on line 21
Process exited with code 255.
Output for 5.3.20 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/WiDKk on line 3
Process exited with code 255.