PHP detects whether the url address is included in Baidu

The following may be useful to SEO friends, or it may also be useful to manage articles edited and published by companies, so I would like to share it with you now.

/**
 * PHP检测url地址是否被百度收录
 * @param string    $url 要检测的URL地址
 */
function checkBaidu($url) { 
    $url = 'http://www.baidu.com/s?wd=' . urlencode($url); 
    $curl = curl_init(); 
    curl_setopt($curl, CURLOPT_URL, $url); 
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); 
    $rs = curl_exec($curl); 
    curl_close($curl); 
    if (!strpos($rs, '没有找到')) { //没有找到说明已被百度收录 
        return 1; 
    } else { 
        return -1; 
    } 
 }
  
 
$url = 'http://liqingbo.cn/blog-385.html'; 
 
 
echo checkBaidu($url);    //如果输出1表示已经收录，-1表示没收录

We can determine whether the URL is included based on the return value of the checkBaidu method.