[joaorodr84]

If you want to avoid the file_exists vs. is_dir problem, I would suggest you to look here.

I tried this and it only creates the directory if the directory does not exist. It does not care if there is a file with that name.

/* Creates the directory if it does not exist */
$path_to_directory = 'path/to/directory';
if (!file_exists($path_to_directory) && !is_dir($path_to_directory)) {
    mkdir($path_to_directory, 0777, true);
}

[nasir-khan]

You first need to check if directory exists file_exists('path_to_directory')

Then use mkdir(path_to_directory) to create a directory

mkdir( string $pathname [, int $mode = 0777 [, bool $recursive = FALSE [, resource $context ]]] ) : bool

More about mkdir() here

Full code here:

$structure = './depth1/depth2/depth3/';
if (!file_exists($structure)) {
    mkdir($structure);
}

[ulidu-theerake]

Here you go.

if (!is_dir('path/to/directory')) {
    if (!mkdir('path/to/directory', 0777, true) && !is_dir('path/to/directory')) {
        throw new \RuntimeException(sprintf('Directory "%s" was not created', 'path/to/directory'));
    }
}

[jens-trnell]

As a complement to current solutions, a utility function.

function createDir($path, $mode = 0777, $recursive = true) {
  if(file_exists($path)) return true;
  return mkdir($path, $mode, $recursive);
}

createDir('path/to/directory');

It returns true if already exists or successfully created. Else it returns false.

[wp-punk]

The best way is to use the wp_mkdir_p function. This function will recursively create a folder with the correct permissions.

Also, you can skip folder exists condition because the function returns:

• true when the directory was created or existed before
• false if you can’t create the directory.

Example:

$path = 'path/to/directory';
if ( wp_mkdir_p( $path ) ) {
    // Directory exists or was created.
}

More: https://developer.wordpress.org/reference/functions/wp_mkdir_p/

[usman-ahmed]

For your specific question about WordPress, use the following code:

if (!is_dir(ABSPATH . 'wp-content/uploads')) wp_mkdir_p(ABSPATH . 'wp-content/uploads');

Function Reference: WordPress wp_mkdir_p. ABSPATH is the constant that returns WordPress working directory path.

There is another WordPress function named wp_upload_dir(). It returns the upload directory path and creates a folder if doesn’t already exists.

$upload_path = wp_upload_dir();

The following code is for PHP in general.

if (!is_dir('path/to/directory')) mkdir('path/to/directory', 0777, true);

Function reference: PHP is_dir()

[ashok-kumawat]

We can create folder using mkdir. Also we can set permission for it.

Value Permission
0     cannot read, write or execute
1     can only execute
2     can only write
3     can write and execute
4     can only read
5     can read and execute
6     can read and write
7     can read, write and execute

<?PHP
  
// Making a directory with the provision
// of all permissions to the owner and 
// the owner's user group
mkdir("/documents/post/", 0770, true)
  
?>

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