php实现检查文章是否被百度收录，_PHP教程

    function checkBaidu($url) {

    $url = 'http://www.baidu.com/s?wd=' . $url;     $curl = curl_init();     curl_setopt($curl, CURLOPT_URL, $url);     curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);     $rs = curl_exec($curl);     curl_close($curl);     $arr = parse_url($url);     if (strpos($arr['query'], 'http://')) {      $arr['query'] = str_replace('http://', '', str_replace('wd=', '', $arr['query']));     } else {      $arr['query'] = str_replace('wd=', '', $arr['query']);     }     if (strpos($arr['query'], '?')) {      $str = strstr($arr['query'], '?');      $arr['query'] = str_replace($str, '', $arr['query']);     }     if (strpos($arr['query'], '/')) {      $narr = explode('/', $arr['query']);      $arr['query'] = $narr[0];     }     if (strpos($rs, ''.$arr['query'].'')) {      return 1;     } else {      return 0;     } } echo checkBaidu('www.jb51.net');