dedecms实现检查文章是否被百度收录

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.example.com');