PHP | mkdir( ) Function

mkdir(path, mode, recursive, context)

1. path : It is a mandatory parameter which specifies the path.
2. mode : It is an optional parameter which specifies permission. The mode parameter consists of four numbers:
   • The first number is always zero.
   • The second number specifies permissions for the owner.
   • The third number specifies permissions for the owner's user group.
   • The fourth number specifies permissions for everybody else.
   The set of possible values are :
   • 1 = execute permissions
   • 2 = write permissions
   • 4 = read permissions
   Multiple permissions can be set by adding up the following numbers.
3. recursive: It is an optional parameter which can be used to set recursive mode.
4. context : It is an optional parameter which specifies the behavior of the stream.

1. Mode parameter in the mkdir() function must be specified in octal representation making it lead with a zero.
2. An E_WARNING level error is generated if the directory already exists.
3. An E_WARNING level error is generated if the relevant permissions prevent creating the directory.

Input : mkdir("/documents/gfg/articles/");
Output : 1

Input : mkdir("/documents/gfg/articles/", 0770)
Output : 1

Input : $nest = './node1/node2/node3/';
        if (!mkdir($nest, 0777, true)) 
        {
          echo('Folders cannot be created recursively');
        }
        else
        {
          echo('Folders created recursively');
        }

Output : Folders created recursively

<?php 
// making a directory with default mode i.e 0777
mkdir("/documents/gfg/articles/");
?>

1

<?php 
// making a directory with the provision of all
// permissions to the owner and the owner's user group
mkdir("/documents/gfg/articles/", 0770)
?>

1

<?php 
$nest = './node1/node2/node3/';
// creating a nested structure directory
if (!mkdir($nest, 0777, true)) 
  {
     echo('Folders cannot be created recursively');
  }
else
  {
     echo('Folders created recursively');
  }
?>

Folders created recursively