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.
Note: The results of this function are cached. See clearstatcache() for more details.
Tip: As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to Appendix J for a listing of which wrappers support stat() family of functionality.
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