(PHP >= 5.3.0, PECL fileinfo >= 0.1.0)
finfo_set_flags — Set libmagic configuration options
This function sets various Fileinfo options. Options can be set also directly in finfo_open() or other Fileinfo functions.
Fileinfo resource returned by finfo_open().
One or disjunction of more Fileinfo constants.
如果成功则返回 TRUE，失败则返回 FALSE。