is_file

Tells whether the filename is a regular file (PHP 3, PHP 4 )
bool is_file ( string filename )

Returns TRUE if the filename exists and is a regular file.

Note:

The results of this function are cached. See clearstatcache() for more details.

Note:

This function will not work on remote files as the file to be examined must be accessible via the servers filesystem.

See also is_dir() and is_link().

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