imap_search UNKEYWORD description is wrong

[Kembreg14]

Description

The following code:

$SearchQuery ='TO "bob@yahoo.com" UNKEYWORD "rosebud" SUBJECT "Citizen Kane"';
$Result=imap_search($Connection,$SearchQuery);
<?php

Resulted in this output:

A mail id for a mail which has the string "rosebud" in the body.

But I expected this output instead:

No mail ID should be returned in $Result which has the string "rosebud" (anywhere) in the message.

PHP Version

PHP 7.4

Operating System

No response

[kamil-tekiela]

Does it also happen with any of the actively supported versions?

[Kembreg14]

Hi and thanks for responding. I think 7.4 is still supported.

[iluuu1994]

@Kembreg14 PHP 7.4 only gets security fixes. https://www.php.net/supported-versions.php

A release that is supported for critical security issues only. Releases are only made on an as-needed basis.

As this doesn't seem to be a security issue this will only be patched in PHP 8.0 and above, assuming it's not already fixed there.

[cmb69]

I don't think this related to any particular PHP version, since this is handled by libc-client. And its documentation states:

  UNKEYWORD <flag>
    Messages that do not have the specified keyword flag set.

So it looks like the PHP manual is in error, since it states:

UNKEYWORD "string" - match messages that do not have the keyword "string"

Please try:

$SearchQuery ='TO "bob@yahoo.com" NOT "rosebud" SUBJECT "Citizen Kane"';
$Result=imap_search($Connection,$SearchQuery);

[cmb69]

Switching to doc issue.