3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { } class B extends A { public self $instOfSelf; public parent $instOfParent; } $b = new B(); $b->instOfParent = new B(); # Allowed var_dump($b); $b->instOfParent = new A(); # Also allowed var_dump($b); $b->instOfSelf = new B(); # Allowed var_dump($b); $b->instOfSelf = new A(); # ERROR var_dump($b);

This is an error 500

Value for `_results` contains invalid data `array`


preferences:
203.59 ms | 2239 KiB | 11 Q