To obtain the previous page's URL in php
<p>i have got 5 php pages which are question papers (MCQ's).</p>

<p>the user is provided with 1 of the papers...which he answers and submits...it then goes to <strong>AnsCheck.php</strong> ...in AnsCheck.php i need to understand from which page i.e from which of the 5 papers the request was received so that i can proceed with the checking ...how do i obtain the page from where i received the request?</p>

<p>----1.php----</p>

<pre><code>&lt;?php
(E_ALL &amp; ~E_NOTICE);

session_start();

// is the one accessing this page logged in or not?
if (!isset($_SESSION['db_is_logged_in'])
   || $_SESSION['db_is_logged_in'] !== true) {

   // not logged in, move to login page
   header('Location: login.php');
   exit;
}

?&gt;
&lt;html&gt;
&lt;head&gt;
&lt;title&gt;My Page&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;form name="1" action="/NewDir/AnsCheck.php" method="POST"&gt;
1.Name the owl of harry potter.
&lt;div align="left"&gt;&lt;br&gt;
&lt;input type="radio" name="paper1" value="op1"&gt;Mr Barnesr&lt;br&gt;
&lt;input type="radio" name="paper1" value="op2" checked&gt; Wighed&lt;br&gt;
&lt;input type="radio" name="paper1" value="op3"&gt; Hedwig&lt;br&gt;
&lt;input type="radio" name="paper1" value="op4"&gt; Muggles&lt;br&gt;
&lt;input type="submit" name="submit" value="Go"&gt;
&lt;/div&gt;
&lt;/form&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
