PHP 實現 Rails 風格的路由器

由於在寫自己開發用的unframework東東
所以出於日後可能用得上的考慮,就生出了這個東西
主要支持了 :id 這些 constraints,另外還半支持自定義的規則
配合 .htaccess 應該就可以發揮 Route 路由效果了
初步記錄一下

// 由 Route 決定規則
Route::map("/user/:id/:name", function($id, $name) {
	echo $id.' - '.$name;
});

// 自定義 :name 的規則
Route::map("/user/:id/:name#Zeuxis#", function($id, $name) {
	echo $id.' - '.$name;
});

# Nginx 的 Rewrite
if (!-f $request_filename) {
    rewrite ^/subfolder/(.*)$ /subfolder/index.php last;
}

# Apache 的 Rewrite
RewriteEngine On
RewriteBase /subfolder
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php [QSA,L]

<?php
// Author: Zeuixs Lo
class Route {

	const NOT_MATCH_ROUTE = -1;

	public static function request_uri() {
		$uri = empty($_SERVER['PATH_INFO']) === false ? $_SERVER['PATH_INFO'] : $_SERVER['REQUEST_URI'];
	}

	public static function map($pattern_uri, $callback = null, $sensitive = false, $strict = false) {
		$request_uri = self::request_uri();
		$match_words = "/(?<!\\\):([a-zA-Z_][a-zA-Z_0-9]*)?(?:#(.*?)#)?/";

		// Get all names such as :id, :name
		preg_match_all($match_words, $pattern_uri, $names, PREG_PATTERN_ORDER);
		$names = $names[1];

		//[Form]: /user/:id, [To]: /user/([a-zA-Z0-9_\+\-%]+) OR /user/(custom rule)
		$match_path  = preg_replace_callback($match_words, array(__class__, "match_path"), $pattern_uri);
		$match_path .= $strict === true ? '' : '/?';

		$match_path  = $sensitive === true ? "@".$match_path."@" : "@".$match_path."@i";

		// Fill params
		$params = array();
		if (preg_match($match_path, $request_uri, $values) == true) {
			array_shift($values);

			foreach($names as $index => $name) {
				$params[$name] = rawurldecode($values[$index]);
			}

			if (is_callable($callback) === true) {
				call_user_func_array($callback, array_values($params));exit;
			}
		}

		return $params;
	}

	public static function match_path($matches) {
		return isset($matches[2]) === true ? '('.$matches[2].')' : '([a-zA-Z0-9_\+\-%]+)';
	}

	private static function error($type, $message = "") {
		switch($type) {
			case self::NOT_MATCH_ROUTE:
				$message = "Not found matched route case by ".$message;
				break;
		}

		exit(sprintf("<strong>[Error]:</strong> %s", $message));
	}
}
?>