PHP curl counterfeit IP address and header information code instance, curlheader

PHP curl counterfeit IP address and header information code instance, curlheader

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

Copy codeThe Code is as follows:
$ Headers ['client-ip'] = '192. 103.229.40 ';
$ Headers ['x-FORWARDED-FOR '] = '2017. 103.229.40 ';
 
$ HeaderArr = array ();
Foreach ($ headers as $ n => $ v ){
$ HeaderArr [] = $ n. ':'. $ v;
}
 
Ob_start ();
$ Ch = curl_init ();
Curl_setopt ($ ch, CURLOPT_URL, "http: // localhost/curl/server. php ");
Curl_setopt ($ ch, CURLOPT_HTTPHEADER, $ headerArr); // construct an IP address
Curl_setopt ($ ch, CURLOPT_REFERER, "http://www.163.com/"); // construct a path
Curl_setopt ($ ch, CURLOPT_HEADER, 1 );
 
Curl_exec ($ ch );
Curl_close ($ ch );
$ Out = ob_get_contents ();
Ob_clean ();
 
Echo $ out;

Then there is server. php

Copy codeThe Code is as follows:
Function GetIP (){
If (! Emptyempty ($ _ SERVER ["HTTP_CLIENT_IP"])
$ Cip = $ _ SERVER ["HTTP_CLIENT_IP"];
Else if (! Emptyempty ($ _ SERVER ["HTTP_X_FORWARDED_FOR"])
$ Cip = $ _ SERVER ["HTTP_X_FORWARDED_FOR"];
Else if (! Emptyempty ($ _ SERVER ["REMOTE_ADDR"])
$ Cip = $ _ SERVER ["REMOTE_ADDR"];
Else
$ Cip = "cannot be obtained! ";
Return $ cip;
}
Echo "<br> access IP:". GetIP (). "<br> ";
Echo "<br> access path:". $ _ SERVER ["HTTP_REFERER"];