HTTP_ACCEPT_LANGUAGE and metatags

[SiteSniffer]

I'm checking browser language by using substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2).Am I allowed to use it for defining metatags keywords or will Google have problems indexing? I'm trying to have differend languages in metatags.

[Dilated]

I'm checking browser language by using substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2).Am I allowed to use it for defining metatags keywords or will Google have problems indexing? I'm trying to have differend languages in metatags.

I'm confused, is your website actually localized? If so you could do:

header('Content-Language: lang, tags, here');

[SiteSniffer]

I ment when my website detects Dutch (nl) browser headers I want the metatags keywords (in header) to be in Dutch. IE <META NAME="keywords" CONTENT="word1, word2, word3">.Does Google check for language and then index a website? If not my routine will be useless I think.

[boen_robot]

If, at your site, you have a facility to switch languages, disregarding the value of the Accept-Language header, Google will index both your Dutch and... I'd assume English... pages. As suggested, you can output a Content-Language to explicitly tell Google that the content is in a certain language. I'd argue it's best to only send this header if the language was computed based on the Accept-Language header, but that's just a personal opinion.If you don't have such a facility, but want to switch your keywords... that would be a black hat SEO trick... I wouldn't be surprised if Google goes as far as to penalize you if it detects you.

[SiteSniffer]

I see. I'm not taking any chances on pulling a black hat SEO trick so I'll stick with a mix of Dutch and English keywords in my header.Thank you for your reply.