is_file
(PHP 3, PHP 4 , PHP 5)
is_file -- Tells whether the filename is a regular file
Description
bool
is_file ( string filename)
Returns TRUE if the filename exists and is a regular file.
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 is_dir() and
is_link().