is_file
(PHP 4, PHP 5)
is_file — Tells whether the filename is a regular file
Description
bool is_file
( string $filename
)
Tells whether the given file is a regular file.
Parameters
- filename
-
Path to the file.
Return Values
Returns TRUE if the filename exists and is a regular file, FALSE otherwise.
Examples
Example #1 is_file() example
<?php
var_dump(is_file('a_file.txt')) . "\n";
var_dump(is_file('/usr/bin/')) . "\n";
?>
The above example will output:
bool(true) bool(false)
Errors/Exceptions
Upon failure, an E_WARNING is emitted.
Notes
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 Supported Protocols and Wrappers for a listing of which wrappers support stat() family of functionality.