title: Setting timezone to UTC (0) in PHP
body: <p>Why does this work?</p>
  
  <pre><code>date_default_timezone_set('Australia/Currie');
  </code></pre>
  
  <p>But this doesn't seem to take any effect at all?</p>
  
  <pre><code>date_default_timezone_set('UTC');
  </code></pre>
  
  <p>This value doesn't change when setting the timezone to UTC:</p>
  
  <pre><code>echo date('Y-m-d H:i:s', time());
  </code></pre>
  
  <p>I'm using php 5.2.13, and the timezone of my server is:</p>
  
  <pre><code>$server_tz = date_default_timezone_get();
  echo $server_tz; //outputs 'America/Guayaquil'
  </code></pre>
  
  <p>This is the original code:</p>
  
  <pre><code>echo time() . "&lt;br&gt;\n";
  date_default_timezone_set('UTC');
  echo time() . "&lt;br&gt;\n";
  </code></pre>
  
  <p>Output:</p>
  
  <pre><code>1317235130
  1317235130
  </code></pre>