Recursively create directory in PHP

mkdir.php

<?php
/**
 * Makes directory
 * @link  http://stackoverflow.com/questions/5425891/check-if-directory-exists-php
 * @param string $pathname The directory path.
 * @param int $mode [optional]<p>
 *                         The mode is 0777 by default, which means the widest possible
 *                         access. For more information on modes, read the details
 *                         on the <b>chmod</b> page.
 *                         </p>
 * @since 11/23/12 12:43 PM
 * @return bool <p><b>INT</b> on success or <b>FALSE</b> on failure.
 *                         1 - The directory $pathname was successfully created.
 *                         </p>
 */
function mkdir($pathname, $mode = 0777) {
    $p = "";
    $pathname = explode('/', $pathname);
    foreach ($pathname as $path) {
        $p .= $path . "/";
        if (!file_exists($p)) {
            if (!mkdir($p, $mode)) {
                return false;
            }
        }
    }

    return 1;
}