PHP Tutorial - PHP is_dir() Function

Definition

The is_dir() function checks whether the specified file is a directory.

Syntax

PHP is_dir() Function has the following syntax.

is_dir(file)

Parameter

Parameter	Is Required	Description
file	Required.	File to check

Return

This function returns TRUE if the directory exists.

Note

The result of this function are cached. Use clearstatcache() to clear the cache.

Example

is_dir() returns true if the string parameter is a directory.

For example, to check whether it is a directory:


<?PHP/*from   ww w  .  j a v a2 s. co m*/
      $filename = 'c:\boot.ini'; // Windows
      $filename = '/etc/passwd'; // Unix

      if (is_dir($filename)) {
             print 'is Directory!';
      } else {
             print 'is not a Directory!';
      }
?>

The code above generates the following result.