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run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(unserialize('O:8:"stdClass":0:{}'));
Output for 5.0.0 - 5.6.38, hhvm-3.10.1 - 3.22.0, 7.0.0 - 7.3.1
object(stdClass)#1 (0) { }
Output for 4.3.0 - 4.4.9
object(stdClass)(0) { }