Function that changes the language of my site based on http_accept_language

Hi

My website is displayable in 2 languages, English and dutch, and I want to show the dutch language if the http_accept_language is present and set to dutch [nl-NL?], the attached code is my first attempt to do so, can someone improve this pls, it should display English in every other case if the http_accept_language is not set to dutch, or, do you know a better way to do this in php?
function ChangeLang(){
 
$Dutch = 'nl';
$Nl = 'lang/dutch.lang';
$En = 'lang/english.lang';
  if (strstr($_SERVER['HTTP_ACCEPT_LANGUAGE'],$Dutch)){
  	  include($Nl);
  }
     else {
 
    include($En);
 }
}

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PeterdeBAsked:
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Ray PaseurCommented:
That code looks fine to me.  This is what my server presents:

_ENV["HTTP_ACCEPT_LANGUAGE"] = en-us,en;q=0.5

Be aware of variable scope since you are including these lang modules inside a function.

Best regards, ~Ray
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PeterdeBAuthor Commented:
Ok thank you very much, I already had taken notice of the variable scope but thanks again
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Ray PaseurCommented:
Thanks for the points, and good luck with your project! ~Ray
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