title: Warning: include(../config/config.php) [function.include]: failed to open stream in PHP
body: <p>i'm getting following error in my PHP file.</p>
  
  <p><code>Warning: include(../config/config.php) [function.include]: failed to open stream: No 
   such file or directory in C:\xampp\htdocs\my-proj\functions\function.php on line 2</code></p>
  
  <p>let me describe my folder structure</p>
  
  <ol>
  <li>ROOT folder /index.php</li>
  <li>functions / function.php</li>
  <li>config / config.php</li>
  <li>signup / signup.php</li>
  </ol>
  
  <p>now, If i use absolute path, then it is give the same error in signup.php, and if I use relative path then it is giving this error in index.php</p>
  
  <p>any help would be appreciated.</p>