<?=expression?> doesn't work in php
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/3277587/question-mark-equals-doesnt-work-on-php">Question mark equals, doesn&#39;t work on php</a>  </p>
</blockquote>



<pre><code>&lt;?php $a=123; ?&gt;
&lt;?=$a?&gt;
</code></pre>

<p>This code is supposed to print "123" on the page. However nothing is printed.
Anyone know what can cause this problem?</p>
