Pass by Value and Pass by reference in php
<blockquote>
  <p><strong>Possible Duplicates:</strong><br>
  <a href="http://stackoverflow.com/questions/2157799/when-to-pass-by-reference-in-php">When to pass-by-reference in PHP</a><br>
  <a href="http://stackoverflow.com/questions/373419/whats-the-difference-between-passing-by-reference-vs-passing-by-value">What&#39;s the difference between passing by reference vs. passing by value?</a>  </p>
</blockquote>



<p>In PHP by default we have pass by value.I am wondering what would be good situations for passing values by reference.</p>
