Most Referenced Functions
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  » site_pageranks()
  » imagepng()
  » imagedestroy()
  » imagestring()
  » imagecolorallocate()
  » htmlentities()
  » fopen()
  » preg_match()
  » header()
  » getimagesize()
  » htmlspecialchars()
  » ob_start()
  » session_start()
  » strstr()
  » ob_flush()
  » preg_match_all()
  » strpos()
  » flush()
  » setcookie()
  » str_replace()
  » array2vars()
  » nl2br()
  » preg_split()
  » ereg()
  » urlencode()
  » ereg_replace()
  » readgzfile()

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PHP Functions

Function: is_dir

(PHP 3, PHP 4, PHP 5)

is_dir -- Tells whether the filename is a directory

Description

bool is_dir ( string filename )

Returns TRUE if the filename exists and is a directory. If filename is a relative filename, it will be checked relative to the current working directory.

Note: The results of this function are cached. See clearstatcache() for more details.

Example 1. is_dir() example

<?
var_dump(is_dir('a_file.txt')) . "\n";
var_dump(is_dir('bogus_dir/abc')) . "\n";

var_dump(is_dir('..')); //one dir up
?>

The above example will output:

bool(false)
bool(false)
bool(true)

Tip: As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to Appendix L for a listing of which wrappers support stat() family of functionality.

Related Function(s)

  • clearstatcache()
  • stat()
  • chdir()
  • opendir()
  • is_file()
  • is_link()
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