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<?php
if (!function_exists('getAvatar')) {

    /**
     * Get either a Gravatar URL or complete image tag for a specified email address.
     * ------------------------------------------------
     * @param string $email The email address
     * @param string $s Size in pixels, defaults to 80px [ 1 - 2048 ]
     * @param string $d Default imageset to use [ 404 | mm | identicon | monsterid | wavatar ]
     * @param string $r Maximum rating (inclusive) [ g | pg | r | x ]
     * @param boole $img True to return a complete IMG tag False for just the URL
     * @param array $atts Optional, additional key/value attributes to include in the IMG tag
     * @return String containing either just a URL or a complete image tag
     * @source https://gravatar.com/site/implement/images/php/
     */
    function getAvatar($email, $s = 100, $d = 'mm', $r = 'g', $img = false, $atts = array()) {
        $url = 'https://www.gravatar.com/avatar/';
        $url .= md5(strtolower(trim($email)));
        $url .= "?s=$s&d=$d&r=$r";
        if ($img) {
            $url = '<img src="' . $url . '"';
            foreach ($atts as $key => $val) {
                $url .= ' ' . $key . '="' . $val . '"';
            }
            $url .= ' />';
        }
        return $url;
    }

    function get_gravatar($email, $s = 80, $d = 'mm', $r = 'g', $img = false, $atts = array()) {

        return $url;
    }

}