string I18Nv2_Negotiator::getLocaleMatch ( 
    array $langs
      = null
    
     , array $countries
      = null
    
   )
Get a matching locale code.
This method is a combination of I18Nv2::getLanguageMatch() and I18Nv2::getCountryMatch()
$langs
     array of language codes
$countries
     array of country codes
Returns string matching locale code.
This function can not be called statically.