diff --git a/system/uri.php b/system/uri.php
index b9a1f73..36a95ae 100644
--- a/system/uri.php
+++ b/system/uri.php
@@ -80,7 +80,7 @@ if(!function_exists("read_requests")) {
 if(!function_exists("get_requests")) {
 	function get_requests() {
 		$requests = get_scope("requests");
-		
+
 		if(!is_array($requests)) {
 			set_scope("requests", read_requests());
 		}
@@ -99,8 +99,8 @@ if(!function_exists("get_final_link")) {
 		$query_str = "";
 
 		$strings = explode("?", $url);
-		$pos = (count($strings) > 1) ? strlen($strings[0]) : -1;	
-		
+		$pos = (count($strings) > 1) ? strlen($strings[0]) : -1;
+
 		if($pos < 0) {
 			$base_url = $url;
 		} else {
@@ -112,7 +112,7 @@ if(!function_exists("get_final_link")) {
 		foreach($data as $k=>$v) {
 			$params[$k] = $v;
 		}
-		
+
 		if(count($params) > 0) {
 			$link = $base_url . "?" . http_build_query($params);
 		} else {
@@ -207,7 +207,7 @@ if(!function_exists("get_requested_values")) {
 				$values[$name] = get_requested_value($name);
 			}
 		}
-		
+
 		return $values;
 	}
 }
@@ -222,7 +222,7 @@ if(!function_exists("empty_requested_value")) {
 if(!function_exists("get_binded_requests")) {
 	function get_binded_requests($rules, $method="_ALL") {
 		$data = array();
-		
+
 		foreach($rules as $k=>$v) {
 			if(!empty($v)) {
 				$data[$v] = get_requested_value($k);
diff --git a/system/uri.php.save b/system/uri.php.save
deleted file mode 100644
index 26de2cf..0000000
--- a/system/uri.php.save
+++ /dev/null
@@ -1,269 +0,0 @@
-<?php
-/**
- * @file uri.php
- * @date 2018-04-13
- * @author Go Namhyeon <gnh1201@gmail.com>
- * @brief URI module
- */
-
-if(!function_exists("base_url")) {
-	function base_url() {
-		return get_config_value("base_url");
-	}
-}
-
-if(!function_exists("base_api_url")) {
-	function base_api_url() {
-		return get_config_value("base_api_url");
-	}
-}
-
-if(!function_exists("get_uri")) {
-	function get_uri() {
-		$requests = get_requests();
-
-		$request_uri = "";
-		if(!array_key_empty("REQUEST_URI", $_SERVER)) {
-			$request_uri = $requests["_URI"];
-		}
-
-		return $request_uri;
-	}
-}
-
-if(!function_exists("read_requests")) {
-	function read_requests() {
-		// process http encryption
-		$config = get_config();
-		$httpencrypt = strtolower(get_value_in_array("httpencrypt", $config, ""));
-		if($httpencrypt == "jcryption") {
-			if(loadHelper("jcryption.lnk")) {
-				jcryption_load();
-				eval(jcryption_get_code());
-			}
-		}
-
-		// process requests
-		$requests = array(
-			"_ALL"   => $_REQUEST,
-			"_POST"  => $_POST,
-			"_GET"   => $_GET,
-			"_URI"   => !array_key_empty("REQUEST_URI", $_SERVER) ? $_SERVER["REQUEST_URI"] : '',
-			"_FILES" => is_array($_FILES) ? $_FILES : array(),
-		);
-
-		// with security module
-		if(function_exists("get_clean_xss")) {
-			foreach($requests['_GET'] as $k=>$v) {
-				if(is_string($v)) {
-					$requests['_GET'][$k] = get_clean_xss($v);
-				}
-			}
-		}
-
-		// set alias
-		$aliases = array(
-			"all" => "_ALL",
-			"post" => "_POST",
-			"get" => "_GET",
-			"uri" => "_URI",
-			"files" => "_FILES"
-		);
-		foreach($aliases as $k=>$v) {
-			$requests[$k] = $requests[$v];
-		}
-
-		return $requests;
-	}
-}
-
-if(!function_exists("get_requests")) {
-	function get_requests() {
-		$requests = get_scope("requests");
-
-		if(!is_array($requests)) {
-			set_scope("requests", read_requests());
-		}
-
-		return get_scope("requests");
-	}
-}
-
-if(!function_exists("get_final_link")) {
-	function get_final_link($url, $data=array(), $entity=true) {
-		$link = "";
-		$url = urldecode($url);
-
-		$params = array();
-		$base_url = "";
-		$query_str = "";
-
-		$strings = explode("?", $url);
-		$pos = (count($strings) > 1) ? strlen($strings[0]) : -1;
-
-		if($pos < 0) {
-			$base_url = $url;
-		} else {
-			$base_url = substr($url, 0, $pos);
-			$query_str = substr($url, ($pos + 1));
-			parse_str($query_str, $params);
-		}
-
-		foreach($data as $k=>$v) {
-			$params[$k] = $v;
-		}
-
-		if(count($params) > 0) {
-			$link = $base_url . "?" . http_build_query($params);
-		} else {
-			$link = $base_url;
-		}
-
-		if($entity == true) {
-			$link = str_replace("&", "&amp;", $link);
-		}
-
-		return $link;
-	}
-}
-
-if(!function_exists("get_route_link")) {
-	function get_route_link($route, $data=array(), $entity=true, $base_url="") {
-		$_data = array(
-			"route" => $route
-		);
-
-		foreach($data as $k=>$v) {
-			$_data[$k] = $v;
-		}
-
-		if(empty($base_url)) {
-			$base_url = base_url();
-		}
-
-		return get_final_link($base_url, $_data, $entity);
-	}
-}
-
-// URI: Uniform Resource Identifier
-// URL: Uniform Resource Locator
-if(!function_exists("redirect_uri")) {
-	function redirect_uri($uri, $permanent=false, $options=array()) {
-		if(array_key_equals("check_origin", $options, true)) {
-			if(!check_redirect_origin($uri)) {
-				set_error("Invalid redirect URL");
-				show_errors();
-			}
-		}
-
-		header("Location: " . $uri, true, $permanent ? 301 : 302);
-		exit();
-	}
-}
-
-if(!function_exists("redirect_with_params")) {
-	function redirect_with_params($uri, $data=array(), $permanent=false, $entity=false) {
-		redirect_uri(get_final_link($uri, $data, $entity), $permanent);
-	}
-}
-
-if(!function_exists("redirect_route")) {
-	function redirect_route($route, $data=array()) {
-		redirect_uri(get_route_link($route, $data, false));
-	}
-}
-
-if(!function_exists("get_requested_value")) {
-	function get_requested_value($name, $method="_ALL", $escape_quotes=true, $escape_tags=false) {
-		$value = "";
-		$requests = get_requests();
-
-		// set validated value
-		if(array_key_exists($method, $requests)) {
-			$value = array_key_empty($name, $requests[$method]) ? $value : $requests[$method][$name];
-
-			if(is_string($value)) {
-				// security: set escape quotes
-				if($escape_quotes == true) {
-					$value = addslashes($value);
-				}
-
-				// security: set escape tags
-				if($escape_tags == true) {
-					$value = htmlspecialchars($value);
-				}
-			}
-		}
-
-		return $value;
-	}
-}
-
-if(!function_exists("get_requested_values")) {
-	function get_requested_values($names, $method="_ALL", $escape_quotes=true, $escape_tags=false) {
-		$values = array();
-
-		if(is_array($names)) {
-			foreach($names as $name) {
-				$values[$name] = get_requested_value($name);
-			}
-		}
-
-		return $values;
-	}
-}
-
-if(!function_exists("empty_requested_value")) {
-	function empty_requested_value($name, $method="_ALL") {
-		$value = get_requested_value($name, $method);
-		return empty($value);
-	}
-}
-
-if(!function_exists("get_binded_requests")) {
-	function get_binded_requests($rules, $method="_ALL") {
-		$data = array();
-
-		foreach($rules as $k=>$v) {
-			if(!empty($v)) {
-				$data[$v] = get_requested_value($k);
-			}
-		}
-
-		return $data;
-	}
-}
-
-if(!function_exists("get_array")) {
-	function get_array($arr) {
-		return is_array($arr) ? $arr : array();
-	}
-}
-
-if(!function_exists("check_is_string_not_array")) {
-	function check_is_string_not_array($str) {
-		return (is_string($str) && !(is_array($str) || $str == "Array"));
-	}
-}
-
-if(!function_exists("set_header_content_type")) {
-	function set_header_content_type($type) {
-		$type = strtolower($type);
-		$rules = array(
-			"json" => "application/json",
-			"xml" => "text/xml",
-			"text" => "text/plain",
-			"html" => "text/html",
-			"xhtml" => "application/xhtml+xml"
-		);
-
-		if(array_key_exists($type, $rules)) {
-			header(sprintf("Content-type: %s", $rules[$type]));
-		} else {
-			header(sprintf("Content-type: %s", $type));
-		}
-	}
-}
-
-// set scope
-set_scope("requests", read_requests());