note 51774 deleted from reserved.variables by felipe

Note Submitter: javalizard at mac dot com 

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My web host server will give my php the user preferred languages out over the order.  This means that I had to write a function for ordering the languages based upon their "q" value (rank from 1..0, 1 being the most preferred).  If you want an ordered list of user preferred languages use this function:

<?php
function orderedLanguages()
{
	$languages = split(",", $_SERVER['HTTP_ACCEPT_LANGUAGE'] );
	$lang_q = Array();
	foreach( $languages as $aLang ) {
		$lang_array = split(";q=", trim( $aLang ) );
		$lang = trim( $lang_array[0] );
		if( !isset( $lang_array[1] ) )
			$q = 1;
		else
			$q = trim($lang_array[1]);
		$lang_q["$lang"] = (float)$q;
	}
	arsort($lang_q);
	//extra code for making the languages key indexed
	$i = 0;
	$lang_index = Array();
	foreach($lang_q as $lang => $q) {
	//	$lang_q[$i] = $lang; //add to the same array the index key/language
		$lang_index[$i] = $lang; //add to a new array the index key/language
		$i++;
	}
	
	//return $lang_index; // uncomment for returning array with keys={0..n-1}, values={most..least preferred}
	return $lang_q;
}

?>

While you can't reference the key by number, You can use foreach to pull elements.  This will be in order.   So getting the key with array_keys should work in the preferred order too.  I've added a few extra lines of commented code for reordering the array into one(s) that reference the language by number (if you need it)   :D