[wp-trac] [WordPress Trac] #53130: is_email() and sanitize_email() differ.

[WordPress Trac]

#53130: is_email() and sanitize_email() differ.
----------------------------+------------------------------
 Reporter:  DuisterDenHaag  |       Owner:  (none)
     Type:  defect (bug)    |      Status:  new
 Priority:  normal          |   Milestone:  Awaiting Review
Component:  Mail            |     Version:  5.5
 Severity:  normal          |  Resolution:
 Keywords:  needs-patch     |     Focuses:
----------------------------+------------------------------
Description changed by SergeyBiryukov:

Old description:

> According to `sanitize_email()` and `FILTER_SANITIZE_EMAIL` and
> `FILTER_VALIDATE_EMAIL` a plus sign (+) is a valid character in an email
> address. Yet `is_email()` will fail. (`info+admin at example.com`)
>
> Why is the validity for `is_email()` different from `sanitize_email()`?
>
> Before reporting this, I found two related issues:
> https://core.trac.wordpress.org/ticket/47467 and
> https://core.trac.wordpress.org/changeset/48645
>
> Since PHPMailer is using is_email() all valid addresses with a + will
> result in an error.

New description:

 According to `sanitize_email()` and `FILTER_SANITIZE_EMAIL` and
 `FILTER_VALIDATE_EMAIL` a plus sign (+) is a valid character in an email
 address. Yet `is_email()` will fail. (`info+admin at example.com`)

 Why is the validity for `is_email()` different from `sanitize_email()`?

 Before reporting this, I found two related issues: #47467 and [48645].

 Since PHPMailer is using is_email() all valid addresses with a + will
 result in an error.

--

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/53130#comment:1>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform