title: php mktime from variable
body: <p>I have a variable like this:</p>
  
  <pre><code>$event_start_date_hour_ISO = str_replace(':',', ',$event_start_hour).', 0, '.date('d, m, Y', $event_start_day);
  </code></pre>
  
  <p>The <code>echo</code> result of <code>$event_start_date_hour_ISO</code> is <code>11, 30, 0, 06, 02, 2016</code>.
  If I do next:</p>
  
  <pre><code>echo date(DATE_ATOM, mktime($event_start_date_hour_ISO))
  </code></pre>
  
  <p>The result is <code>2016-02-06T11:48:08+02:00</code>.</p>
  
  <p>If I do:</p>
  
  <pre><code>echo date(DATE_ATOM, mktime(11, 30, 0, 06, 02, 2016))
  </code></pre>
  
  <p>The result if correct:</p>
  
  <pre><code>2016-06-02T11:30:00+03:00
  </code></pre>
  
  <p>Except <code>+03:00</code>, my UTC+2.</p>
  
  <p>What am I doing wrong? How to put data from variable and get right answer?</p>