Script to check how many pages from a site is indexed in Bing.com

//helper function
function between($string, $start, $end)
    {
    $string=" " . $string;
    $ini   =strpos($string, $start);
 
    if ($ini == 0)
        return "";
 
    $ini+=strlen($start);
    $len=strpos($string, $end, $ini) - $ini;
    return substr($string, $ini, $len);
    }
 
//another helper function
function file_get_contents_curl($url, $referer="", $ua="Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Ubuntu/10.04 Chromium/7.0.514.0 Chrome/7.0.514.0 Safari/534.7")
    {
    $ch=curl_init($url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); //Set curl to return the data instead of printing it to the browser.
    if ($referer!="") {
        curl_setopt($ch, CURLOPT_REFERER, $referer);
    } else {
        curl_setopt($ch, CURLOPT_REFERER, $url);
    }
    //curl_setopt($ch, CURLOPT_URL, $url);
    if ($ua!="") {
		curl_setopt($ch, CURLOPT_USERAGENT, $ua);
	} else {
		curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
	}
 
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, 30);
    $data=curl_exec($ch);
    curl_close ($ch);
 
    return $data;
    }
 
//this is the main function
function msn_indexed($uri, $badge = 0)
    {
    $uri =trim(str_ireplace('http://', '', $uri));
    $uri =trim(str_ireplace('http', '', $uri));
    $url ='http://www.bing.com/search?q=site%3A' .urlencode( $uri).'&go=&qs=n&sk=&form=QBLH&mkt=en-WW';
    $data=file_get_contents_curl($url);
 
    if (strpos($data, 'sb_count')!==FALSE) {
	return (integer)str_replace(",", "", trim(between($data, '<span class="sb_count" id="count">', 'result')));
    } else {
	return 0;
    }
}

$dx=msn_indexed("www.ahowto.net");