is_file
(PHP 4, PHP 5, PHP 7, PHP 8)
is_file — Tells whether the filename is a regular file
Description
$filename): boolTells 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.
Errors/Exceptions
Upon failure, an E_WARNING is emitted.
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)
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
- is_dir() - Tells whether the filename is a directory
- is_link() - Tells whether the filename is a symbolic link
- SplFileInfo
