PHP method to solve DOM garbled code example code-PHP Tutorial-php.cn

PHP method to solve DOM garbled code example code

高洛峰

Release： 2023-03-03 13:28:01

Original

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Foreword

DOM is a relatively new XML and HTML processing class in PHP. It can operate the DOM tree as conveniently as JavaScript. There are more introductions on the Internet about how it handles XML. Today, this article will introduce how PHP solves DOM garbled characters. Method, not much to say below, just look at the solution below.

The solution is as follows

/**
 * 请求url页面信息
 * @param str $url
 * @return str mixed|boolean
 */
function curl_get($url) {
  $curl = curl_init();
  curl_setopt($curl, CURLOPT_URL, $url);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
  //302跳转
  curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
  curl_setopt($curl, CURLOPT_USERAGENT, &#39;Mozilla/5.0 (Windows NT 6.1; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0&#39;);
  curl_setopt($curl, CURLOPT_REFERER, $url);
  $data = curl_exec($curl);
  $code = curl_getinfo($curl,CURLINFO_HTTP_CODE); //输出请求状态码
  curl_close($curl);
  if(200 == $code) {
    //解决乱码
    if (preg_match(&#39;#<meta[^>]*charset="?gb2312"[^>]*>#&#39;, $data)) {
      $data = iconv("gb2312","utf-8//IGNORE",$data);
      $data = preg_replace(&#39;#<meta[^>]*charset="?gb2312"[^>]*>#is&#39;, &#39;<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">&#39;, $data);
    }
 
    if (!preg_match(&#39;#<meta charset="utf-8"[^>]*>#is&#39;, $data)) {
      $data = str_replace(&#39;<head>&#39;, &#39;<head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">&#39;, $data);
    }
 
    if (preg_match(&#39;#<meta charset="utf-8"[^>]*>#is&#39;, $data)) {
      $data = preg_replace(&#39;#<meta charset="utf-8"[^>]*>#is&#39;, &#39;<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">&#39;, $data);
    }
 
    return $data;
  } else {
    return false;
  }
 
}

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/**
 * 获取 DOMDocument 对象
 * @param str $url
 * @return boolean|DOM
 */
function getDom($url) {
  $html_content = curl_get($url);
  if(empty($html_content)) {
    //saveLog($url, &#39;请求失败&#39;);
    return false;
  }
  $dom = new DOMDocument(&#39;1.0&#39;, &#39;utf-8&#39;);
  libxml_use_internal_errors(true);
  $dom->loadHTML($html_content);
  return $dom;
}

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$html_content = mb_convert_encoding($html_content, &#39;UTF-8&#39;, &#39;gb2312&#39;);

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