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run code in 300+ PHP versions simultaneously
<?php // Source: https://bugs.php.net/bug.php?id=63369 class bar1 { function __sleep() { foo(); } } class foo1 { function __sleep() { var_dump(serialize(array("test", "1", 234))); var_dump(serialize(new bar1)); } } $o = new foo1; var_dump(unserialize('O:8:"stdclass":0:{}')); //to clear BG(serialize_lock) var_dump(serialize($o));

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