<?php
//Display a message to change the language if the user seems to have chosen a bad language

global $q_config;
//available choices
$available_choices = $q_config['enabled_languages'];
// base choice: none, with a 0 preference
$choice = array('', 0.0);
//header choices
if( isset( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) && ! empty( $_SERVER['HTTP_ACCEPT_LANGUAGE'] ) )
{
	$choices = explode(',', strtolower(str_replace(' ', '', $_SERVER['HTTP_ACCEPT_LANGUAGE'])));
	//browse choices
	foreach($choices as $l)
	{
		//separate language from preference
		$l = explode(';', $l);
		$l[1] = (count($l) === 1) ? 1.0 : (float) str_replace('q=', '', $l[1]);
		//language available ?
		if( in_array($l[0], $available_choices) )
		{
			//if pref = 1, this is an absolute choice
			if($l[1] === 1.0)
			{
				$choice = $l;
				break;
			}
			elseif( $l[1] > $choice[1] )
				$choice = $l;
		}
	}
}
$pref_language = $choice[0];
if( $pref_language != '' && $pref_language != $q_config['language'] )
{
	$url = qtrans_convertURL( $_SERVER['REQUEST_URI'], $pref_language );
	?>
	<?php
}

?>