PHP | is_dir( ) Function (original) (raw)
Last Updated : 07 Jun, 2018
The is_dir() function in PHP used to check whether the specified file is a directory or not. The name of the file is sent as a parameter to the is_dir() function and it returns True if the file is a directory else it returns False.
Syntax:
is_dir($file)
Parameters Used:
The is_dir() function in PHP accepts only one parameter.
- $file : It is a mandatory parameter which specifies the file.
Return Value:
It returns True if the file is a directory else it returns false.
Exceptions:
- An E_WARNING is emitted on failure.
- The result of this function are cached and therefore the clearstatcache() function is used to clear the cache.
- is_dir() function returns false for non-existent files.
Below programs illustrate the is_dir() function.
Program 1
<?php
$myfile = "user/home/documents/gfg" ;
if ( is_dir ( $myfile ))
`` echo ( "$myfile is a directory" );
else
`` echo ( "$myfile is not a directory" );
?>
Output:
user/home/documents/gfg is a directory
Program 2
<?php
if ( is_dir ( $myfile ))
`` echo ( "$myfile is a directory" );
else
`` echo ( "$myfile is not a directory" );
?>
Output:
https://www.geeksforgeeks.org is not a directory