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That is, proxy, it depends on your program to implement it, proxy

If your program is a client to request others, you can use http proxy. For example, how to configure http proxy using curl:

$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://baidu.com');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC); //代理認證模式
curl_setopt($ch, CURLOPT_PROXY, "xxx.xxx.xxx.xxx"); //代理服務器地址
curl_setopt($ch, CURLOPT_PROXYPORT, 80); //代理服務器端口
//curl_setopt($ch, CURLOPT_PROXYUSERPWD, ":"); //http代理認證帳號，username:password的格式
curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP); //使用http代理模式
$file_contents = curl_exec($ch);