Description:
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---
I've followed all the reported bugs & forums. However, still not got any solution for this. Please help me to fix this bug. 
---
<?php
$datetime1 = new DateTime('2011-05-01');
$datetime2 = new DateTime('2011-05-07');
$interval = $datetime1->diff($datetime2); print_r($interval);
echo $interval->format('%R%a days');
?>

O/P: DateInterval Object ( [y] => 0 [m] => 0 [d] => 6 [h] => 0 [i] => 0 [s] => 0 [invert] => 0 [days] => 6015 ) +6015 days

The o/p always gives the same unexpected result for any dates. i.e, +6015

Test script:
---------------
<?php
$datetime1 = new DateTime('2011-05-01');
$datetime2 = new DateTime('2011-05-07');
$interval = $datetime1->diff($datetime2); print_r($interval);
echo $interval->format('%R%a days');
?>

Expected result:
----------------
O/P: DateInterval Object ( [y] => 0 [m] => 0 [d] => 6 [h] => 0 [i] => 0 [s] => 0 [invert] => 0 [days] => 6015 ) +6015 days

Actual result:
--------------
6 days