3v4l.org

run code in 300+ PHP versions simultaneously
<?php class bad { private $_private = array(); public function __construct() { $this->_private[] = 'oh noes'; } public function __destruct() { //echo "bad::destructor\n"; global $bar; $bar = $this->_private; } } $foo = new stdclass; $foo->foo = $foo; $foo->bad = new bad; print_r($foo); gc_disable(); $bar = new stdclass; $bar->foo = $bar; $bar->bad = new bad; gc_collect_cycles();

preferences:
57.17 ms | 402 KiB | 5 Q