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标题 PHP获取网页所有连接的方法(附demo源码下载)
范文
    本文实例讲述了PHP获取网页所有连接的方法。分享给大家供大家参考,具体如下:
    function getHtml($url, $charset='utf-8')
    {
      $curl = curl_init();
      //curl_setopt($curl, CURLOPT_HTTPHEADER, array('X-FORWARDED-FOR:192.168.168.1', 'CLIENT-IP:192.168.168.1'));//IP
      curl_setopt($curl, CURLOPT_URL, $url);
      curl_setopt($curl, CURLOPT_REFERER, "");  //来路
      $user_agent = isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : 'Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.43 Safari/537.31';
      curl_setopt($curl, CURLOPT_USERAGENT, $user_agent);
      // 只需返回HTTP header
      // curl_setopt($curl, CURLOPT_HEADER, 1);
      // 页面内容我们并不需要
      // curl_setopt($curl, CURLOPT_NOBODY, 1);
      // 返回结果,而不是输出它
      curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
      $html = curl_exec($curl);
      //$info = curl_getinfo($curl);
      //echo var_dump($info);
      if ($html === false) {
        //echo "cURL Error: " . curl_error($ch);
        return '';
      }
      curl_close($curl);
      if ($charset != 'utf-8')
      {
        $html = iconv($charset, "UTF-8", $html);
      }
      return $html;
    }
    header("Content-type: text/html; charset=utf-8");
    include('simple_html_dom.php');
    // 要打开 extension=php_mbstring.dll
    //$url = 'http://www.baidu.com/s?wd=kaka';
    $url = 'http://www.163.com/';
    $str_html = getHtml($url, 'gbk');
    $html = str_get_html($str_html);
    $links = $html->find('a');
    foreach($links as $link)
    {
      $txt = trim($link->plaintext);
      echo $link->href . '[' . $txt . ']<br>';
    }
    $html = null;
    希望本文所述对大家PHP程序设计有所帮助。
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更新时间:2025/5/17 6:07:15