Online PHP editor | refs for MbW5b

<?php class Container { public function getObject() { $this->object = new StringableObject(); return $this->object; } // This destructor is required to exist to trigger the segfault public function __destruct() { } } class StringableObject { public function __toString() { $this->test = $this; return 'test123'; } } $container = new Container(); $object = $container->getObject(); // Any kind of function which triggers a 'to string' object conversion // Casting $object with (string) will circumvent the problem echo trim($object); // Another call is required to corrupt heap echo trim('test');