unserialize_callback_func

unserialize_callback_func — The unserialize callback function will be called (with the undefined class' name as parameter), if the unserializer finds an undefined class which should be instantiated. A warning appears if the specified function is not defined, or if the function doesn't include/implement the missing class. So only set this entry, if you really want to implement such a callback-function.

Modifiability: INI_ALL - The unserialize_callback_func INI directive can be configured anywhere, including php.ini files, ini_set calls, Apache .htaccess files, per-directory .ini files, etc.