php的curl携带header请求头信息实现http访问的方法
导读:
curl请求时添加请求头信息可以模拟真人操作,不容易被当成是爬虫机器人(采集),从而可以绕过Incapsula等安全验证机制。
1、首先使用浏览器(示例使用的是火狐浏览器)访问接口网址,使用F12调试,查看请求头信息,如下:
2、实现代码:
<?php /** * 开始访问请求 * @param $url * @return bool|string */ function fetch_url($url) { $header = FormatHeader($url); $useragent = 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0'; $timeout= 120; $ch = curl_init($url); curl_setopt($ch, CURLOPT_FAILONERROR, true); //设置请求头信息 curl_setopt($ch, CURLOPT_HTTPHEADER, $header); //不取得返回头信息 curl_setopt($ch, CURLOPT_HEADER, 0); // 关闭https验证 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true ); curl_setopt($ch, CURLOPT_ENCODING, "" ); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true ); curl_setopt($ch, CURLOPT_AUTOREFERER, true ); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout ); curl_setopt($ch, CURLOPT_TIMEOUT, $timeout ); curl_setopt($ch, CURLOPT_MAXREDIRS, 10 ); curl_setopt($ch, CURLOPT_USERAGENT, $useragent); $content = curl_exec($ch); if(curl_errno($ch)) { echo 'Error:' . curl_error($ch); } else { return $content; } curl_close($ch); } //添加请求头 function FormatHeader($url) { // 解析url $temp = parse_url($url); $query = isset($temp['query']) ? $temp['query'] : ''; $path = isset($temp['path']) ? $temp['path'] : '/'; $header = array ( "POST {$path}?{$query} HTTP/1.1", "Host: {$temp['host']}", "Referer: http://{$temp['host']}/", "Content-Type: text/xml; charset=utf-8", 'Accept: application/json, text/javascript, */*; q=0.01', 'Accept-Encoding:gzip, deflate, br', 'Accept-Language:zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2', 'Connection:keep-alive', 'User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:83.0) Gecko/20100101 Firefox/83.0', 'X-Requested-With: XMLHttpRequest', ); return $header; } ?>
3、调用示例:
<?php //lcg_value() 返回范围为 (0, 1) 的一个伪随机数 $url="http://www.xxx.com/getdata.php?v=".lcg_value(); //访问网址 $html = fetch_url($url);
到此这篇关于php的curl携带header请求头信息实现http访问的方法的文章就介绍到这了,更多相关php的curl请求头信息实现http访问内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们!
赞 (0)