PHP start with <? - 500 Server error - T_OPEN_TAG : <p>I migrated a php website to a new server. </p>

<pre><code> Old PHP Version -&gt; 5.2
 New PHP Version -&gt; 5.5
</code></pre>

<p>When a script contains the T_OPEN_TAG</p>

<pre><code>&lt;?
</code></pre>

<p>instead of</p>

<pre><code>&lt;?php
</code></pre>

<p>the server is sending a 500 Server error. How is it possible to allow that php could start with</p>

<pre><code>&lt;?
</code></pre>

<p>thank you</p>
