data structure to add element in associative array
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/247467/how-are-associative-arrays-implemented-in-php">How are associative arrays implemented in PHP?</a>  </p>
</blockquote>



<p>Can anybody help me out to understand the data structure behind the associative array.I have tried to find it out from the last couple of days.</p>
