Notice: Undefined index: submit in sample.php on line 25
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/2172820/notice-undefined-index">Notice: Undefined index</a>  </p>
</blockquote>



<p>When do we get this error?</p>

<blockquote>
  <p>Notice: Undefined index: submit in C:\wamp\www\sample.php on line 25</p>
</blockquote>

<p>What is the exact meaning of this perticular error?</p>
