3v4l.org

run code in 300+ PHP versions simultaneously
<?php class test { public $inner = NULL; protected $prot = 1; private $priv = 2; } $one = new test; $two = new test; $one->inner = $two; $two->inner = $one; for($i = 100; $i > 0; $i--) { $serialized = preg_replace('/O:\d:"([^"]*)":/i', 'O:8:"stdClass":', serialize($one)); $storage = json_encode(unserialize(preg_replace_callback('/s:(\d+):"\x00([^"\x00]+)\x00([^"]+)"/i', function($matches) { return 's:'.($matches[1]-(strlen($matches[2])+2)).':"'.$matches[3].'"'; }, $serialized))); }

preferences:
34.08 ms | 402 KiB | 5 Q