Description:
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When I try to move mail from one directory to another I get that notice and on the mail server log it tells me that the command is invalid and ignores it.

Notice: Notice: Unknown: List index out of bounds (0) (errflg=2) in Unknown on line 0

Reproduce code:
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<?php 

$Prefix = 'codeciti.com'; 
$Pass = 'xxxxxxxx'; <-- blanked for security
$Email = 'wil@codeciti.com'; 
$Mailserver = '{192.168.1.121:143}'; 
$Mailbox = 'Inbox'; 

$Link=imap_open($Mailserver.$Mailbox,$Email,$Pass) or die("can't connect: " . imap_last_error());  

$arr = array(0 => '1', 1 => '2', 2 => '3'); 

$messageset = implode(',',$arr); 

imap_mail_move($Link, $messageset, 'Trash');  

imap_close($Link); 

?> 

Expected result:
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Should move the mail from the current folder to the trash.

Actual result:
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Nothing gets moved it just echos that notice statement.