title: Symfony project is not generarting php errors file
body: <p>I have two sites developed using the Symfony framework. One uses SF 1.3.8 and the other uses SF 1.4.8</p>
  
  <p>The project running v 1.3.8 logs PHP related errors in a php_errors.log file, whilst the project using v 1.4.8 does not create any such file.</p>
  
  <p>I have checked the proj/apps/frontend/config/settings.yml of both projects, and I can't seem to spot any differences.</p>
  
  <p>They both have (in apps/frontend/config/settings.yml):</p>
  
  <pre><code>dev:
  
    .settings:
  
      error_reporting:        &lt;?php echo (E_ALL | E_STRICT)."\n" ?&gt;
  
  
  
  test:
  
    .settings:
  
      error_reporting:        &lt;?php echo ((E_ALL | E_STRICT) ^ E_NOTICE)."\n" ?&gt;
  </code></pre>
  
  <p>Does anyone know why this is occurring?</p>