Description

mkdir(
    string $directory,
    int $permissions = 0777,
    bool $recursive = false,
    ?resource $context = null
): bool

Attempts to create the directory specified by directory.

Parameters

directory

The directory path.

Tip

A URL can be used as a filename with this function if the fopen wrappers have been enabled. See fopen() for more details on how to specify the filename. See the Supported Protocols and Wrappers for links to information about what abilities the various wrappers have, notes on their usage, and information on any predefined variables they may provide.

permissions

The permissions are 0777 by default, which means the widest possible access. For more information on permissions, read the details on the chmod() page.

Note:
permissions is ignored on Windows.

Note that you probably want to specify the permissions as an octal number, which means it should have a leading zero. The permissions is also modified by the current umask, which you can change using umask().

recursive

If true, then any parent directories to the directory specified will also be created, with the same permissions.

context

A context stream resource.

Return Values

Returns true on success or false on failure.

Note:
If the directory to be created already exists, that is considered an error and false will still be returned. Use is_dir() or file_exists() to check if the directory already exists before trying to create it.

Errors/Exceptions

Emits an E_WARNING level error if the directory already exists.

Emits an E_WARNING level error if the relevant permissions prevent creating the directory.

Examples

Example #1 mkdir() example

<?php
mkdir("/path/to/my/dir", 0700);
?>

Example #2 mkdir() using the recursive parameter

<?php
// Desired directory structure
$structure = './depth1/depth2/depth3/';

// To create the nested structure, the $recursive parameter 
// to mkdir() must be specified.

if (!mkdir($structure, 0777, true)) {
    die('Failed to create directories...');
}

// ...
?>