[Tickets #8821] Not all users are getting a reminder

[bugs at horde.org]

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Ticket URL: http://bugs.horde.org/ticket/8821
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  Ticket             | 8821
  Created By         | 80602 at heygel.ch
  Summary            | Not all users are getting a reminder
  Queue              | Horde Base
  Version            | 3.3.6
  Type               | Bug
  State              | Unconfirmed
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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80602 at heygel.ch (2010-01-08 12:54) wrote:

On shared calendars with multiple users having reading access and  
having configured "On all calendars I have read access to" for setting  
"Choose if you want to receive reminders for events with alarms:", an  
alarm is always sent only to one of those users.

I think, I found the cause to this problem:
On line 164 of /lib/Horde/Alarm/sql.php the $alarms array is filled  
with $alarm['alarm_id'] as key. However it's possible, that multiple  
records in horde_alarms share the same "alarm_id" and all except the  
first found alarm gets lost in this array. So it's not a good idea to  
use this alarm_id as array key.