3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = ['a'=>'b','c'=>'d','e'=>'f']; $a = serialize($arr); echo $a.'<br>'; echo unserialize($a).'<br>'; echo json_encode($arr).'<br>'; echo msgpack_pack($arr) ?>

preferences:
49.95 ms | 402 KiB | 5 Q