Suggestion for remove notce warning

Hi!

My solution removes the Notice warning (because undefined index):

function qtrans_parseURL($url) {
	$r  = '!(?:(\w+)://)?(?:(\w+)\:(\w+)@)?([^/:]+)?';
	$r .= '(?:\:(\d*))?([^#?]+)?(?:\?([^#]+))?(?:#(.+$))?!i';

	preg_match ( $r, $url, $out );
	$result = @array(
			"scheme" => isset($out[1])?$out[1]:'',
			"host" => (isset($out[4])?$out[4]:'').((isset($out[5]) && $out[5]!='')?':'.$out[5]:''),
			"user" => isset($out[2])?$out[2]:'',
			"pass" => isset($out[3])?$out[3]:'',
			"path" => isset($out[6])?$out[6]:'',
			"query" => isset($out[7])?$out[7]:'',
			"fragment" => isset($out[8])?$out[8]:''
	);
	return $result;
}

Change: check of exsistence.

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