php syntax question
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/3446216/difference-between-single-quote-and-double-quote-string-in-php">Difference between single quote and double quote string in php</a>  </p>
</blockquote>



<p>What's the difference between single quote <code>'</code> and double quote <code>"</code> in php? My idea is when one uses a single quote, there is some core value in it that needs to be used in the program, in case of double quote its just a string. Am I correct?</p>
