Parse URL

$url          = "http://test.studio2108dev8.com/mo/st-louis/gateway-high/"; 
$url_path     = parse_url($url, PHP_URL_PATH); 
$url_parts    = array_filter(explode("/",$url_path)); 
$parts_count  = count($url_parts);  



switch ($parts_count) {
	case 1:
		echo "1";
		$is_a_state = is_a_state($parts_count[0]);
		break;
	case 2:
		echo "2";
		$is_a_city = is_a_city($parts_count[1]);
		break;
	default:
		$all_tags = $url_parts;
		unset($all_tags[0]);
		unset($all_tags[1]);
		break;
}

function is_a_state($slug) { 

}

function is_a_city($slug) { 

}