title: last week, this week (php)
body: <p>i am making some statistics, i want to select the time from (last week only) and this week.</p>
  
  <p>for this week its easy:</p>
  
  <pre><code>$start = strtotime('this week');
  $finish = time();
  </code></pre>
  
  <p>for last week</p>
  
  <pre><code>$start = strtotime('last week');
  $finish = ??????
  </code></pre>