Recursively creating directory structures

Posted 5 April 2004

Every now and then you want to create a deep directory structure on the fly. This function allows you to create whole directory trees independent of what folders exist in the path.

<?php
/**
 * Create a directory structure recursively
 *
 * @author      Aidan Lister <aidan@php.net>
 * @version     1.0.2
 * @link        http://aidanlister.com/2004/04/recursively-creating-directory-structures/
 * @param       string   $pathname    The directory structure to create
 * @return      bool     Returns TRUE on success, FALSE on failure
 */
function mkdirr($pathname, $mode = 0777)
{
    // Check if directory already exists
    if (is_dir($pathname) || empty($pathname)) {
        return true;
    }
 
    // Ensure a file does not already exist with the same name
    $pathname = str_replace(array('/', ''), DIRECTORY_SEPARATOR, $pathname);
    if (is_file($pathname)) {
        trigger_error('mkdirr() File exists', E_USER_WARNING);
        return false;
    }
 
    // Crawl up the directory tree
    $next_pathname = substr($pathname, 0, strrpos($pathname, DIRECTORY_SEPARATOR));
    if (mkdirr($next_pathname, $mode)) {
        if (!file_exists($pathname)) {
            return mkdir($pathname, $mode);
        }
    }
 
    return false;
}
?>