3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { } class b { } var_dump(serialize(new b)); $d = 'O:1:"a":0:{}'; var_dump(unserialize($d, array('allowed_asss' => 'a') ));
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
string(12) "O:1:"b":0:{}" object(a)#1 (0) { }
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 string(12) "O:1:"b":0:{}" object(a)#1 (0) { }
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
string(12) "O:1:"b":0:{}" Warning: unserialize() expects exactly 1 parameter, 2 given in /in/qAtXI on line 16 bool(false)

preferences:
201.17 ms | 402 KiB | 323 Q