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.
Παραδείγματα
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)
Notes
Note: Τα αποτελέσματα αυτής της συνάρτησης έχουν γίνει cache. Δείτε την clearstatcache() για περισσότερες πληροφορίες.
Tip
As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to List of Supported Protocols/Wrappers for a listing of which wrappers support stat() family of functionality.