is_file
is_file
(PHP 4, PHP 5, PHP 7)
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.
Note: Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB.
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.
As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to Supported Protocols and Wrappers to determine which wrappers support stat() family of functionality.
See Also
© 1997–2017 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://secure.php.net/manual/en/function.is-file.php
