Solution to the problem that XMLHttpRequestAjax cannot set a custom Referer in php

Solution: Use the server as a proxy.
In PHP, use my favorite and most powerful CURL, hey
The following is an example code for querying domain names on Wanwang

Copy the code The code is as follows:

$dn = $_GET['dn']; // Domain name, excluding www
$ex = $_GET['ex']; // Top-level domain name, such as .com, .cn, including the front .
// Check whether the domain name has been registered
$url = 'http://pandavip.www.net.cn/check/check_ac1.cgi';
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_POST, true); // POST
curl_setopt($ch, CURLOPT_POSTFIELDS, 'domain='.$dn.$ex);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0 ) Gecko/20100101 Firefox/8.0');
curl_setopt($ch, CURLOPT_COOKIE, '__utma=1.1486902564.1322109246.1322109246.1; __utmz=1.1322109246.1.1. utmcsr=(direct)|utmccn=(direct)|utmcmd=(none) ; AdSource=GOOGLE%u641C%u7D22; AdWordID=gg96011009070005; __utmc=1');
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'X-Requested-With' => 'XMLHttpRequest', // Set to Ajax mode
'Referer' => 'http://pandavip.www.net.cn/cgi-bin/Check.cgi?queryType=0&domain1='.$dn.'&image.x=0&image.y=0&domain='. $dn.'&big5=n&sign=2&url=www.net.cn&'.trim($ex, '.').'=yes' // Impostor, hey
));
curl_exec($ch); // Return the query results to the front end and process them with JS

The above introduces the solution to the problem that XMLHttpRequestAjax in PHP cannot set a custom Referer, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.