title: Unexpected date Output
body: <p>I wanted to add 30 days in my current order_date which is retrieved from db automatically and display the date which is 30 days ahead.But the result which i am getting is something like this 14437368002015-11-01 when the order_date was 2015-10-01.1443736800 gets Added before the date .Please help!</p>
  
  <pre><code>while($row = mysqli_fetch_array($query)){
  
  
  echo '&lt;tr&gt;'.
                                  '&lt;td align="center"&gt;'.$row['order_no'].'&lt;/td&gt;'.
                                      '&lt;td align="center"&gt;'.$row['order_date'].'&lt;/td&gt;'.
                                      '&lt;td align="center"&gt;'.$row['store_used'].'&lt;/td&gt;'.
                                      '&lt;td align="center"&gt;'.$row['status'].'&lt;/td&gt;'.
                                      '&lt;td align="center"&gt;'.'Rs.'.$row['cashback'].'&lt;/td&gt;'.
                                      '&lt;td align="center"&gt;'.$date = strtotime($row['order_date']);
  $date = strtotime("+30 day", $date);
  echo date('Y-m-d', $date);'&lt;/td&gt;'.  
                                      '&lt;/tr&gt;';
                              }
                              echo '&lt;/tbody&gt;&lt;/table&gt;&lt;/form&gt;'."\n\n";
                  mysqli_close($dbc2);
                  ?&gt;
  </code></pre>
  
  <p>Results:</p>
  
  <pre><code>Order ID    Order Date  Store Used  Status          Cashback    Est.Cashback.Date
  134         2015-10-02  Flipkart    To be Checked   Rs.         14437368002015-11-01
  </code></pre>