note 52786 deleted from reserved.variables by felipe

Note Submitter: www dot php dot net at webdevelopers dot cz 

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Simple function that selects "best" language for the user from the list of available languages:

function chooseLang($availableLangs) {
	$pref=array();
	foreach(split(',', $_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($pref);
	return array_shift(array_merge(array_intersect($pref, $availableLangs), $availableLangs));
}
 
echo 'BESTLANG: '.chooseLang(array('cs', 'sk', 'ru', 'en'));

Daniel "elixon" Sevcik