PHP 4, PHP 5, PHP 7, PHP 8
is_dir - Tells whether the filename is a directory
Code Examples

is_dir( string$filename ): bool

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 open_basedir further restrictions may apply.

Return Values

Returns true if the filename exists and is a directory, false otherwise.

Exceptions and Errors

Upon failure, an E_WARNING is emitted.



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 to determine which wrappers support stat family of functionality.

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Function is_dir:

Filesystem Functions

Most used PHP functions