php google baidu yahoo 收录查询程序

function getGoogleIndex($url, $type) {
 $url = getShortUrl($url);
 $content = getUrlContent("http://www.google.com.hk/search?hl=zh-CN&source=hp&q=$type:$url");
 $content = @iconv('gb2312', 'utf-8', $content);
 switch ($type) {
  case 'site' :
   $pattern = "/获得约 (.*?) 条结果/i";
   break;
  case 'link' :
   $pattern = "/有 (.*?)/i";
   break;
  default :
   exit;
 }
 preg_match($pattern, $content, $GoogleIndex);
 return str_replace('约', '', $GoogleIndex[1]);
}

function getBaiduIndex($url, $type) {
 $url = getShortUrl($url);
 $content = getUrlContent("http://www.baidu.com/s?wd=$type:$url");
 $content = @iconv('gb2312', 'utf-8', $content);
 preg_match('/找到相关网页(.*?)篇/i', $content, $BaiduIndex);
 return str_replace('约', '', $BaiduIndex[1]);
}
 
function getBingIndex($url, $type) {
 $url = getShortUrl($url);
 $content = getUrlContent("http://cn.bing.com/search?q=$type:$url");
 preg_match('/共 (.*?) 条/i', $content, $BingIndex);
 return $BingIndex[1];
}

function getYahooIndex($url, $type) {
 $url = getShortUrl($url);
 $qurl = "http://sitemap.cn.yahoo.com/search?p=";
 switch ($type) {
  case 'site' :
   $qurl .= $url;
   $pattern = "/被收录的网页： 共 (.*?) 条/i";
   break;
  case 'link' :
   $qurl .= $url.'&bwm=i';
   $pattern = "/链向该地址的网页： 共 (.*?) 条/i";
   break;
  default :
   exit;
 }
 $content = getUrlContent($qurl);
 preg_match($pattern, $content, $YahooIndex);
 return format_number($YahooIndex[1]); 
}

function getUrlContent($url) {
 $content = @file_get_contents($url);
 return $content;
}