雑Router（ちゃんとしたい）

index.php

<?php
use \Utilitys\Response;

$router->match(['greeting', ':id'], "GET", function($attrs){
	Response::response(200, ["message"=>"Hello, ".$attrs["id"]);
});

Response::NotFound("Endpoint");

Response.php

<?php
namespace Utilitys;

class Response
{
    private static $instance;

    /**
     * getInstance
     *
    **/
    public static function getInstance()
    {
        if (!self::$instance) {
            self::$instance = new Response();
        }
        return self::$instance;
    }

    /**
     * response
     * Basic response system.
     *
     * int    $statusCode 200, 201, 400, 401, etc...
     * array  $response array data can covert json.
     *
    **/
	public static function response(int $statusCode, array $response){
        header("Content-Type: application/json");
        header("Access-Control-Allow-Origin: *");
        header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE");
        header("Access-Control-Allow-Headers: *");
        http_response_code($statusCode);
        echo json_encode($response);
        exit;
	}

    /**
     * NotFound
     * Return 404 JSON.
     * Format: `Error $objName Not Found.`
     *
     * string $objName
    **/
    public static function NotFound(string $objName){
        header("Content-Type: application/json");
        header("Access-Control-Allow-Origin: *");
        header("Access-Control-Allow-Methods: GET, POST, PUT, DELETE");
        header("Access-Control-Allow-Headers: *");
        http_response_code(404);
        echo json_encode(["message"=>"Error, {$objName} Not Found."]);
    }
}

Router.php

<?php
namespace Utilitys;

class Router{
	private $routes = [];
	private $attrs  = [];

	public function __construct($routes){
		$this->routes = $routes;
	}

	public function match(array $pattern, string $method, $callback){
		$isMatch = true;
		if($method != $_SERVER["REQUEST_METHOD"]) $isMatch = false;
		if(in_array(":any", $pattern)){
			if(count($pattern) > count($this->routes)-1) $isMatch = false;
		}else{
			if(count($pattern) != count($this->routes)-1) $isMatch = false;
		}

		for ($i=0; $i < count($pattern); $i++) {
			if(strpos($pattern[$i], ":") === 0) continue;
			if($pattern[$i] != $this->routes[$i+1]) $isMatch = false;
		}
		if(!$isMatch) return false;

		$this->makeAttrs($pattern);
		call_user_func($callback, $this->attrs);
	}

	private function makeAttrs(array $pattern){
		for ($i=0; $i < count($pattern); $i++) {
			if(strpos($pattern[$i], ":") === false) continue;
			if($pattern[$i] == ":any"){
				for ($index=0; $index < count($this->routes); $index++) {
					if($index <= $i) continue;
					$this->attrs["any"][] = $this->routes[$index];
				}
				break;
			}
			$this->attrs[mb_substr($pattern[$i], 1)] = $this->routes[$i+1];
		}
	}
}