--TEST-- Ensure __autoload() is triggered during unserialization. --FILE-- <?php function __autoload($name) { echo "in autoload: $name\n"; } var_dump(unserialize('O:1:"C":0:{}')); ?> --EXPECTF-- in autoload: C object(__PHP_Incomplete_Class)#%d (1) { ["__PHP_Incomplete_Class_Name"]=> string(1) "C" }