(PHP 4, PHP 5, PHP 7, PHP 8)
imap_setflag_full — Sets flags on messages
$imap,$sequence,$flag,$options = 0
   Causes a store to add the specified flag to the
   flags set for the messages in the specified 
   sequence.
  
imapIMAP\Connection 实例。
sequence
       A sequence of message numbers. You can enumerate desired messages
       with the X,Y syntax, or retrieve all messages 
       within an interval with the X:Y syntax
      
flag
       The flags which you can set are \Seen, 
       \Answered, \Flagged,
       \Deleted, and \Draft as
       defined by » RFC2060.
      
optionsA bit mask that may contain the single option:
ST_UID - The sequence argument contains UIDs
          instead of sequence numbers
         
        
   成功时返回 true, 或者在失败时返回 false。
  
| 版本 | 说明 | 
|---|---|
| 8.1.0 | 现在 imap参数接受 IMAP\Connection
  实例,之前接受 资源(resource)。 | 
示例 #1 imap_setflag_full() example
<?php
$mbox = imap_open("{imap.example.org:143}", "username", "password")
     or die("can't connect: " . imap_last_error());
$status = imap_setflag_full($mbox, "2,5", "\\Seen \\Flagged");
echo gettype($status) . "\n";
echo $status . "\n";
imap_close($mbox);
?>