The solution to crawling garbled web pages using curl and file_get_contents

When I used the curl_init function to crawl Sohu's web pages today, I found that the collected web pages were garbled. After analysis, I found that the server turned on the gzip compression function. Just add multiple options CURLOPT_ENCODING to the function curl_setopt to parse gzip and you can decode it correctly.


Also, if the captured web page is encoded in GBK, but the script is indeed encoded in utf-8, the captured web page must be converted using the function mb_convert_encoding.

<?php
    $tmp = sys_get_temp_dir();
    $cookieDump = tempnam($tmp, &#39;cookies&#39;);
    $url = &#39;http://tv.sohu.com&#39;;
    $ch = curl_init();
    curl_setopt ($ch, CURLOPT_URL, $url);
    curl_setopt ($ch, CURLOPT_HEADER, 1);// 显示返回的Header区域内容
    curl_setopt ($ch, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转
    curl_setopt ($ch, CURLOPT_TIMEOUT, 10);// 设置超时限制
    curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); // 获取的信息以文件流的形式返回
    curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT,10);// 链接超时限制
    curl_setopt ($ch, CURLOPT_HTTPHEADER,array(&#39;Accept-Encoding: gzip, deflate&#39;));//设置 http 头信息
    curl_setopt ($ch, CURLOPT_ENCODING, &#39;gzip,deflate&#39;);//添加 gzip 解码的选项，即使网页没启用 gzip 也没关系
    curl_setopt ($ch, CURLOPT_COOKIEJAR, $cookieDump);  // 存放Cookie信息的文件名称
    $content = curl_exec($ch);
    // 把抓取的网页由 GBK 转换成 UTF-8 
    $content = mb_convert_encoding($content,"UTF-8","GBK");
?>

rrree