[Tickets #5306] Recur_Yearly_Date: recurInterval = 2 years

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Ticket URL: http://bugs.horde.org/ticket/?id=5306
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 Ticket             | 5306
 Created By         | patrick.abiven at apitech.fr
 Summary            | Recur_Yearly_Date: recurInterval = 2 years
 Queue              | Kronolith
 Version            | HEAD
 Type               | Bug
 State              | Unconfirmed
 Priority           | 1. Low
 Owners             | 
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patrick.abiven at apitech.fr (2007-04-25 07:14) wrote:

Hello
After creating a yearly event having a 2 years recurring interval, when
using the year view, only the first occurence is shown.

Event: 25/04/07, yearly , 2 years -> the next occurence should be
25/04/09. But when displaying 2009 year view, the occurence is not shown.

It seems that in lib/Driver.php, the calculation done at line 525 is not
correct.

$offset = $after->year - $estart->year;
if ($offset > 0) { 
                $offset = (($offset + $this->recurInterval - 1) /
$this->recurInterval) *       
                                 $this->recurInterval;                 
                 $estart->year += $offset;             
}
In our case: $offset is initialized to 2009 - 2007 = 2
and after using a recurInterval = 2, $offset is set to 3.

The month calculation line 473, uses floor() function. 
Regards
Patrick