counts are 0

some counts are 0 while they are not, should something special be done:

e.g. tweets are 0 ; stumbleupon = 0 ; linkedin = 0 BUT facebook likes are okay.

my code:

$html = '<span id="socialbar">';
        $sh = array (
            array('st_fblike_hcount','fblike'),
            //array('st_facebook_hcount','facebook'),
            array('st_twitter_hcount','twitter'),
            array('st_linkedin_hcount','linkedin'),
            array('st_plusone_hcount','stumbleupon'),
            array('st_stumbleupon_hcount','stumbleupon'),
            array('st_sharethis_hcount','sharethis'),
        );
        foreach($sh as $sh_key => $sh_value) {
            $html .= "<span class='" . $sh_value[0] . "' st_title='" . get_the_title()
                    . "' st_url='" . get_permalink() . "' displayText='".$sh_value[1]."'></span>";
        }
        $html .= "<script charset=\"utf-8\" type=\"text/javascript\">"
         . "var switchTo5x=true;</script>"
         . "<script charset=\"utf-8\" type=\"text/javascript\" src=\"https://w.sharethis.com/button/buttons.js\">"
         . "</script><script type=\"text/javascript\">"
         . "stLight.options({publisher:'bfbc2ef0-02bc-4755-bc9e-c2135666a476'});"
         . "var st_type='wordpress3.5.1';</script>";
        $html .= '</span><br clear="all" />';
        return $html;