Sets flags on messages

# imap_setflag_full

(PHP 4, PHP 5, PHP 7, PHP 8)

imap_setflag_full — Sets flags on messages

### Description

imap_setflag_full(
IMAP\Connection `$imap`,
string `$sequence`,
string `$flag`,
int `$options` = 0
): true

Causes a store to add the specified `flag` to the flags set for the messages in the specified `sequence`.

### Parameters

`imap`

  An IMAP\Connection instance.

`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.

`options`

  A bit mask that may contain the single option:

  - `ST_UID` - The sequence argument contains UIDs instead of sequence numbers

### Return Values

Always returns `true`.

### Errors/Exceptions

Throws a ValueError if `options` is invalid.

### Changelog

Version | Description
--- | ---
8.1.0 | The `imap` parameter expects an IMAP\Connection instance now; previously, a valid `imap` resource was expected.
8.0.0 | A ValueError is now thrown on invalid `options` parameter values. Previously, a warning was emitted and the function returned `false`.

### Examples

Example #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);
?>`

### See Also

- imap_clearflag_full() - Clears flags on messages

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