Want some information about .inc files
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/7129842/what-is-inc-and-why-to-use-it">What is .inc and why to use it?</a>  </p>
</blockquote>



<p>I am working on a project which is partially developed by someone else. He has defined some inc files and some funcitons inside the files. Now i need to use those functions. For that, i need to know the below details. I tried some links by googling it. But i still can't get clear idea. My doubts are,</p>

<blockquote>
  <p>1) what is .inc file?</p>
  
  <p>2) Is there any difference between .inc file and .php file?</p>
  
  <p>3) How to include an inc file inside a php file?</p>
  
  <p>4) How to access the functions defined in .inc file inside php file?</p>
</blockquote>

<p>Anyone help me by providing the details.</p>
