[Tickets #10733] LOG errors for ParseAddressList, _isGroup and _splitAddress of Rfc822.php

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Ticket URL: http://bugs.horde.org/ticket/10733
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  Ticket             | 10733
  Created By         | jcblanco at fi.upm.es
  Summary            | LOG errors for ParseAddressList, _isGroup and
                     | _splitAddress of Rfc822.php
  Queue              | Horde Groupware Webmail Edition
  Version            | 4.0.3
  Type               | Bug
  State              | Unconfirmed
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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jcblanco at fi.upm.es (2011-11-10 16:43) wrote:

I'm having various groups of three errors int the LOG, all errors are  
about passing an array when a string is expected.

2011-11-10T17:21:50+01:00 NOTICE: HORDE [imp] PHP ERROR: Array to  
string conversion [pid 23321 on line 156 of  
"/nas/www/hordewebmail/pear/php/Horde/Mail/Rfc822.php"]
2011-11-10T17:21:50+01:00 WARN: HORDE [imp] PHP ERROR: explode()  
expects parameter 2 to be string, array given [pid 23321 on line 271  
of "/nas/www/hordewebmail/pear/php/Horde/Mail/Rfc822.php"]
2011-11-10T17:21:50+01:00 WARN: HORDE [imp] PHP ERROR: explode()  
expects parameter 2 to be string, array given [pid 23321 on line 208  
of "/nas/www/hordewebmail/pear/php/Horde/Mail/Rfc822.php"]

Debugging the content of $address in this lines gives a content as
  array (
   0 =>
   array (
     'inner' => 'news at mailing.perfumes24hours.com',
     'personal' => 'perfumes24horas.com',
   ),
)

I haven't had the time to review all the calls to parseAddressList but  
a search of the calls shows that in line 974 of imp/lib/Compose.php is  
calling Horde_Mime_Address::parseAddressList wich then calls to  
Horde_Mail_Rfc822::parseAddressList with an array as parameter.

I don't know if this is what is causing the error or if this the only  
possible cause