title: PHP Mktime error
body: <p>I'm all of a sudden getting the following error on a site that I've done, which has been working fine so far:</p>
  
  <pre><code>A PHP Error was encountered
  
  Severity: Warning
  
  Message: mktime() [function.mktime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Antarctica/Macquarie' for 'EST/10.0/no DST' instead
  </code></pre>
  
  <p>This is the code in question:</p>
  
  <pre><code>$stamp=mktime(0,0,0,$month,$day,$year);
  </code></pre>
  
  <p>What's the issue here? How can I quickly make these errors go away? I'm using <code>mktime</code> in that format in a lot of places and its throwing an error in each place.</p>