title: How to get proxy ip with some php function?
body: <p>I have two vps ,to  build  sshd on my vps_ip1 and install autoproxy plugin in firefox on local machine, to bind some_domain with vps_ip2,and put the read.php on the vps_ip2.</p>
  
  <pre><code>&lt;?php
  echo  $_SERVER['REMOTE_ADDR'];
  echo  "&lt;br&gt;";
  echo  $_SERVER['REQUEST_TIME'];
  echo  "&lt;br&gt;";
  echo  $_SERVER['HTTP_X_FORWARDED_FOR'];
  echo  "&lt;br&gt;";
  echo  $_SERVER['HTTP_CLIENT_IP'];
  ?&gt;  
  </code></pre>
  
  <p>Now my local ip is ip0, I connect vps_ip1 with ssh and start autoproxy,when to input  <code>some_domain/read.php</code> in firefox , to get the fllowing output :</p>
  
  <pre><code>vps_ip1
  1426332103
  </code></pre>
  
  <p><code>$_SERVER['HTTP_X_FORWARDED_FOR']</code> and <code>$_SERVER['HTTP_CLIENT_IP']</code> get nothing about my ip0.<br>
  How to get my local ip0 with some php function?</p>