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run code in 300+ PHP versions simultaneously
<?php class obj { var $prop; function __wakeup() { $this->prop = 'prop'; } } $x = 'a:4:{i:0;O:8:"stdClass":1:{i:0;a:1:{i:0;i:1;}}i:1;O:3:"obj":1:{s:4:"prop";R:2;}i:2;N;i:3;R:3;}'; $y = unserialize($x); var_dump($y);

preferences:
62.02 ms | 402 KiB | 5 Q