PHP uses curl to forge IP address and header information

PHP uses curl to forge IP address and header information

Although curl is powerful, it can only forge $ _ SERVER ["HTTP_X_FORWARDED_FOR"]. for most IP address detection programs, it is difficult to forge $ _ SERVER ["REMOTE_ADDR: First, the client. php code 01 $ Headers ['client-IP'] = '192. 103.229.40 '; 02 $ Headers ['X-FORWARDED-FOR '] = '2017. 103.229.40 '; 03 04 $ HeaderArr = array (); 05 Foreach ($ headers as $ n => $ v ){ 06 $ HeaderArr [] = $ n. ':'. $ v; 07 } 08 09 Ob_start (); 10 $ Ch = curl_init (); 11 Curl_setopt ($ ch, CURLOPT_URL, "http: // localhost/curl/server. php "); 12 Curl_setopt ($ ch, CURLOPT_HTTPHEADER, $ headerArr); // Construct an IP address 13 Curl_setopt ($ ch, CURLOPT_REFERER, "http://www.163.com/"); // Construct a path 14 Curl_setopt ($ ch, CURLOPT_HEADER, 1 ); 15 16 Curl_exec ($ ch ); 17 Curl_close ($ ch ); 18 $ Out = ob_get_contents (); 19 Ob_clean (); 20 21 Echo $ out; Then there is server. php 01 Function GetIP (){ 02 If (! Emptyempty ($ _ SERVER ["HTTP_CLIENT_IP"]) 03 $ Cip = $ _ SERVER ["HTTP_CLIENT_IP"]; 04 Else if (! Emptyempty ($ _ SERVER ["HTTP_X_FORWARDED_FOR"]) 05 $ Cip = $ _ SERVER ["HTTP_X_FORWARDED_FOR"]; 06 Else if (! Emptyempty ($ _ SERVER ["REMOTE_ADDR"]) 07 $ Cip = $ _ SERVER ["REMOTE_ADDR"]; 08 Else 09 $ Cip = "cannot be obtained! "; 10 Return $ cip; 11 } 12 Echo" Access IP: ". GetIP ()." "; 13 Echo" Access path: ". $ _ SERVER [" HTTP_REFERER "];

Curl, PHP, header