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Detect user language with PHP

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Function to detect user language in php.

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  1. function getPreferredLanguage() {
  2. 	$langs = array();
  3. 	if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
  4. 		// break up string into pieces (languages and q factors)
  5. 		preg_match_all('/([a-z]{1,8}(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i',
  6. 				$_SERVER['HTTP_ACCEPT_LANGUAGE'], $lang_parse);
  7. 		if (count($lang_parse[1])) {
  8. 			// create a list like "en" => 0.8
  9. 			$langs = array_combine($lang_parse[1], $lang_parse[4]);
  10. 			// set default to 1 for any without q factor
  11. 			foreach ($langs as $lang => $val) {
  12. 				if ($val === '') $langs[$lang] = 1;
  13. 			}
  14. 			// sort list based on value	
  15. 			arsort($langs, SORT_NUMERIC);
  16. 		}
  17. 	}
  18. 	//extract most important (first)
  19. 	foreach ($langs as $lang => $val) { break; }
  20. 	//if complex language simplify it
  21. 	if (stristr($lang,"-")) {$tmp = explode("-",$lang); $lang = $tmp[0]; }
  22. 	return $lang;
  23. }

URL: http://www.barattalo.it/2009/12/16/detect-user-language-with-php/

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