if(!function_exists('get_avatar')){
    function get_avatar($str){
        $acronym;
        $word;
        $words = preg_split("/(\s|\-|\.)/", $str);
        foreach($words as $w) {
            $acronym .= substr($w,0,1);
        }
        $word = $word . $acronym ;
        return $word;
    }
}