3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ser = array( 2206427175 => 'user' ); $ser = serialize($ser); var_dump(unserialize($ser));
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
array(1) { [2206427175]=> string(4) "user" }
preferences:
46.27 ms | 408 KiB | 5 Q