php解决DOM乱码的方法示例代码

前言

DOM是php比较新的xml和html处理类,可以像javascript那样方便的操作DOM树,网上更多的是介绍它处理XML的情况,今天这篇文章就介绍下php解决DOM乱码的方法,下面话不多说,直接看下面的解决方法。

解决方法如下

/**

* 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, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0');

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('#<meta[^>]*charset="?gb2312"[^>]*>#', $data)) {

$data = iconv("gb2312","utf-8//IGNORE",$data);

$data = preg_replace('#<meta[^>]*charset="?gb2312"[^>]*>#is', '<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">', $data);

}

if (!preg_match('#<meta charset="utf-8"[^>]*>#is', $data)) {

$data = str_replace('<head>', '<head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">', $data);

}

if (preg_match('#<meta charset="utf-8"[^>]*>#is', $data)) {

$data = preg_replace('#<meta charset="utf-8"[^>]*>#is', '<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">', $data);

}

return $data;

} else {

return false;

}

}

/**

* 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, '请求失败');

return false;

}

$dom = new DOMDocument('1.0', 'utf-8');

libxml_use_internal_errors(true);

$dom->loadHTML($html_content);

return $dom;

}

$html_content = mb_convert_encoding($html_content, 'UTF-8', 'gb2312');

总结

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