Returns the user ID of the owner of the file, or FALSE in case of an error. The user ID is returned in numerical format, use posix_getpwuid() to resolve it to a username.
備注:此函數的結果會被快取。詳細資訊請參考 clearstatcache()。
心得:As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to 附錄 L for a listing of which wrappers support stat() family of functionality.
See also stat()