Apostrophes and is_email() alternative

[Tom Barrett]

I'm looking at an 'apostrophe in email' issue. The codex page for
is_email() says it is deprecated (but not what to use instead). Other
functions in core appear to use the function (eg: sanitize_option()).

Trying to add a user to a vanilla 3.6.1 install with an apostrophe in the
email fails.

What is the accepted method to check email validity (for use as WordPress
user accounts)?

Is there a good reason not to use FILTER_VALIDATE_EMAIL ?

Thanks.

[Thomas Scholz]

Post by Tom Barrett
What is the accepted method to check email validity (for use as WordPress
user accounts)?
Is there a good reason not to use FILTER_VALIDATE_EMAIL ?

No, there is no good reason. You can extend the internal checker with
filter_var().

See this plugin for an example:
https://gist.github.com/toscho/972837

Thomas

[J.D. Grimes]

Post by Tom Barrett
The codex page for
is_email() says it is deprecated (but not what to use instead). Other
functions in core appear to use the function (eg: sanitize_option()).

Right, it really isn't deprecated, just the second argument. I've updated the codex page to make this clear.

[Tom Barrett]

Thanks JD! Much clearer.

Thanks Thomas, the gist needs a little tweaking as it doesn't work in it's
current state.

The next step in this lovely journey is that the $email var passed around
in the hooks has the apostrophe escaped. And back slashes are not valid.

This is fun :)

// Sent by Nexus

Post by J.D. Grimes

Post by Tom Barrett
The codex page for
is_email() says it is deprecated (but not what to use instead). Other
functions in core appear to use the function (eg: sanitize_option()).

Right, it really isn't deprecated, just the second argument. I've updated
the codex page to make this clear.
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[Ian Dunn]

FYI, there are some Core tickets around this (and related) issues:

http://core.trac.wordpress.org/ticket/16867
http://core.trac.wordpress.org/ticket/18658
http://core.trac.wordpress.org/ticket/18039

Post by Tom Barrett
Thanks JD! Much clearer.
Thanks Thomas, the gist needs a little tweaking as it doesn't work in it's
current state.
The next step in this lovely journey is that the $email var passed around
in the hooks has the apostrophe escaped. And back slashes are not valid.
This is fun :)
// Sent by Nexus

Post by J.D. Grimes

Post by Tom Barrett
The codex page for
is_email() says it is deprecated (but not what to use instead). Other
functions in core appear to use the function (eg: sanitize_option()).

Right, it really isn't deprecated, just the second argument. I've updated
the codex page to make this clear.