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function chooseLang () {	global $wiki_Languages;	$pref=array();		foreach(explode(',', $_SERVER["HTTP_ACCEPT_LANGUAGE"]) as $lang)		if (preg_match('/^([a-z]+)[^;]*;q=([0-9.]+)/i', $lang . ';q=1.0', $split))				$pref[sprintf("%f%d", $split[2], rand(0,9999))]=strtolower($split[1]);		krsort($pref);	$junk_1 = array_intersect($pref, $wiki_Languages);	$junk_2 = array_merge( $junk_1, $wiki_Languages);	return array_shift( $junk_2 );}