Add IE version to browser detection.

[pross]

Allow theme/plugin authors to use specific code depending on Internet Explorer Versions.

$is_IE remains the same true|false.

$is_winIE/$is_macIE returns version number.

Example:

global $is_winIE;
echo $win_IE;

result: 8.0

[ericmann]

Considering IE for Mac was discontinued in 2003 and official support ended in 2005, do we really need to maintain an $is_macIE variable?

Also, IE versions make more sense from a theme (CSS & JS) perspective ... not from a server (PHP) perspective. What's the reasoning for adding an IE version variable to core?

[pross]

Replying to ericmann:

Considering IE for Mac was discontinued in 2003 and official support ended in 2005, do we really need to maintain an $is_macIE variable?

I dont know, I didnt add $is_macIE maybe it should be removed if it is no longer used.

Also, IE versions make more sense from a theme (CSS & JS) perspective ... not from a server (PHP) perspective. What's the reasoning for adding an IE version variable to core?

To enable theme authors to send version specific css, or even different doctypes html5 for example. At least the option would be there.

[pross]

New patch: removed $is_macIE and $is_NS4
$is_IE just returns false or version.

[pross]

removes $is_macIE from deprecated.php too

[nacin]

You can check the user agent yourself. No need for this.