title: error_log not working as expected
body: <p>I have the following basic code:</p>
  
  <pre><code>&lt;?php
  
      //http://localhost/error_log.php
      echo "write to the error_log";
      error_log("error_log entry");
      //error_log("error_log entry",0);
  
  ?&gt;
  </code></pre>
  
  <p>When I navigate to this page, I see <code>write to the error_log</code> in the browser.  It even appears in the access_log <code>/var/log/apache2/access.log</code>.</p>
  
  <pre><code>[my ip here] - - [18/Jan/2013:09:18:54 +0000] "GET /error_log.php HTTP/1.1" 200 314 "-" "Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.97 Safari/537.11"
  </code></pre>
  
  <p>but when I check the error_log i.e. <code>/var/log/apache2/error.log</code>, I don't see either of the error_log messages.</p>
  
  <p>Why are these not getting entered into the error_log?</p>