is_dir
(PHP 4, PHP 5)
is_dir — Tells whether the filename is a directory
Description
$filename
)Tells whether the given filename is a directory.
Parameters
-
filename -
Path to the file. If
filenameis a relative filename, it will be checked relative to the current working directory. Iffilenameis a symbolic or hard link then the link will be resolved and checked. If you have enabled safe mode, or open_basedir further restrictions may apply.
Return Values
Returns TRUE if the filename exists and is a directory, FALSE
otherwise.
Examples
Example #1 is_dir() example
<?php
var_dump(is_dir('a_file.txt'));
var_dump(is_dir('bogus_dir/abc'));
var_dump(is_dir('..')); //one dir up
?>
The above example will output:
bool(false) bool(false) bool(true)
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.
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