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PHP Manual


(PHP 4, PHP 5)

is_dirTells whether the filename is a directory


bool is_dir ( string $filename )

Tells whether the given filename is a directory.



Path to the file. If filename is a relative filename, it will be checked relative to the current working directory. If filename is 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.


Example #1 is_dir() example


var_dump(is_dir('..')); //one dir up

The above example will output:



Upon failure, an E_WARNING is emitted.


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

  • chdir() - Change directory
  • dir() - Return an instance of the Directory class
  • opendir() - Open directory handle
  • is_file() - Tells whether the filename is a regular file
  • is_link() - Tells whether the filename is a symbolic link

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