title: The change of php 5.2 to 5.6 modifies the characteristics of the opening and closing script
body: <p>The opening of the scripts change  
  
  <p>The closure of the scripts changes  ?>   to  ...--?> </p>
  
  <p>The scripts are not executed</p>
  
  <p>I searched the web possible causes, but I have not found anything.</p>
  
  <p>Please, I ask help</p>
  
  <p>Example:</p>
  
  <pre><code>&lt;?php
      session_start();
      $codigo_isef =  md5(uniqid(rand(), true));
      $codigo_isef  = trim($codigo_isef); 
  ?&gt;
  </code></pre>
  
  <p>to</p>
  
  <pre><code>... &lt;!--?
      session_start();
      $codigo_isef =  md5(uniqid(rand(), true));
      $codigo_isef  = trim($codigo_isef); 
  ...--?&gt;
  </code></pre>
  
  <p>Let me explain:</p>
  
  <p>I open with ""</p>
  
  <p>The browser does not process the code and change the characters "... </p>