diff --git a/.htaccess b/.htaccess
new file mode 100644
index 0000000..5f20b32
--- /dev/null
+++ b/.htaccess
@@ -0,0 +1,14 @@
+Options -Indexes
+order deny,allow
+
+<Files ~ "^.(htaccess|htpasswd)$">
+deny from all
+</Files>
+
+<Files ~ "^database.db">
+deny from all
+</Files>
+
+RewriteEngine On
+RewriteCond $1 !^(api|asset)
+RewriteRule ^(\d+|\w+)$ index.php?id=$1
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f292d5e
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2017 Caringor
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..979b441
--- /dev/null
+++ b/README.md
@@ -0,0 +1,9 @@
+# CRZ.im
+---
+> 一个支持域名缩短网站的源代码
+
+## 概述
+[CRZ.im](http://crz.im/) 是一个提供网址缩短服务的网站，这是它的源代码。
+
+## 安装
+[CRZ.im](http://crz.im/) 基于 PHP 进行开发，下载后您只需要修改 `config.php` 的相关配置并为 `inc/class` 文件夹提供可读写权限。对于 Nginx 用户，还需把 `nginx.txt` 里面的内容添加到 Nginx 的配置文件内。
\ No newline at end of file
diff --git a/api/index.php b/api/index.php
new file mode 100644
index 0000000..6c9ed5c
--- /dev/null
+++ b/api/index.php
@@ -0,0 +1 @@
+<?php exit; ?>
\ No newline at end of file
diff --git a/api/set.php b/api/set.php
new file mode 100644
index 0000000..fc34013
--- /dev/null
+++ b/api/set.php
@@ -0,0 +1,21 @@
+<?php
+
+  // 寮曞叆绫�
+  require_once('../inc/require.php');
+  global $config;
+  $url_c = new url();
+
+  $opt = [];
+  $opt['success'] = 'false';
+
+  $request_arr = json_decode(file_get_contents('php://input'), true);
+  if(isset($request_arr['url'])) {
+    $opt['success'] = 'true';
+    $opt['content']['url'] = $url_c->set_url($request_arr['url'], $config['length']);
+  } else {
+    $opt['content'] = '缂哄皯蹇呰鍙傛暟!';
+  }
+
+  echo json_encode($opt);
+
+?>
\ No newline at end of file
diff --git a/asset/css/main.css b/asset/css/main.css
new file mode 100644
index 0000000..f1e57e8
--- /dev/null
+++ b/asset/css/main.css
@@ -0,0 +1,101 @@
+/* Reset */
+* {
+  margin: 0;
+  padding: 0;
+}
+html, body, input, text, textarea {
+  outline: none;
+  font-family: 'Arial', 'Microsoft YaHei', '榛戜綋', '瀹嬩綋', sans-serif;
+  font-size: 12px;
+}
+html, body {
+  background: #fff;
+}
+a {
+  text-decoration: none;
+}
+a:hover {
+  text-decoration: underline;
+}
+
+/* Main */
+.wrap {
+  text-align: center;
+  overflow: hidden;
+}
+.wrap .meta {
+  margin: 160px 0 0 0;
+  opacity: 0;
+  transform: translateY(-150px);
+  transition: .5s all ease;
+}
+.on .wrap .meta {
+  opacity: 1;
+  transform: translateY(0);
+}
+.wrap .meta .title {
+  line-height: 1em;
+  color: #ff4665;
+  font-size: 42px;
+  text-transform: uppercase;
+}
+.wrap .meta .description {
+  margin: 10px 0 0 0;
+  line-height: 1em;
+  color: #7e7e7e;
+  font-size: 16px;
+  font-weight: normal;
+}
+.wrap .link-area {
+  margin: 50px 0 0 0;
+  opacity: 0;
+  transition: .5s opacity ease;
+}
+.on .wrap .link-area {
+  opacity: 1;
+}
+.wrap .link-area input {
+  display: inline-block;
+  vertical-align: middle;
+}
+.wrap .link-area #url {
+  width: 320px;
+  height: 32px;
+  line-height: 32px;
+  padding: 0 10px;
+  border: 3px solid #bdc3c7;
+  border-radius: 5px;
+  color: #333;
+}
+.wrap .link-area #url.focus,
+.wrap .link-area #url:focus {
+  border-color: #ff4665;
+  transition: .2s border ease;
+}
+.wrap .link-area #submit {
+  width: 90px;
+  height: 38px;
+  margin: 0 0 0 5px;
+  background: #ff4665;
+  border-radius: 5px;
+  color: #fff;
+  border: none;
+  cursor: pointer;
+  transition: .2s opacity ease;
+}
+.wrap .link-area #submit:hover {
+  opacity: .75;
+}
+.wrap .link-area #submit:active {
+  opacity: .9;
+}
+.wrap .footer {
+  width: 100%;
+  bottom: 80px;
+  left: 0;
+  position: absolute;
+  color: #7e7e7e;
+}
+.wrap .footer a {
+  color:#ff4665;
+}
\ No newline at end of file
diff --git a/asset/js/app.js b/asset/js/app.js
new file mode 100644
index 0000000..3419f8b
--- /dev/null
+++ b/asset/js/app.js
@@ -0,0 +1,62 @@
+
+var APP = (function(){
+
+  var fn = {
+    
+    // 鐢熸垚鐭湴鍧�
+    setUrl: function(self) {
+      var urlEl = document.getElementById('url');
+      if(urlEl.value) {
+        var request = {
+          "url": urlEl.value
+        };
+        fn.getJson('api/set.php', true, JSON.stringify(request), function(res) {
+           if(res.success == 'true') {
+            urlEl.className = 'focus';
+            urlEl.value = res.content.url;
+           }
+        });
+      } else {
+        urlEl.setAttribute('placeholder', '缃戝潃涓嶈兘涓虹┖鍝');
+        setTimeout(function() {
+          urlEl.setAttribute('placeholder', 'https://');
+        }, 2000);
+      }
+    },
+    
+    // 鑾峰彇 JSON 鏁版嵁
+    getJson: function(url, post, data, callback) {
+      var xhr = new XMLHttpRequest(),
+          type = (post) ? 'POST' : 'GET';
+      xhr.onreadystatechange = function() {
+        if(xhr.readyState == 4 && xhr.status == 200) {
+          var json = JSON.parse(xhr.responseText);
+          callback(json);
+        } else if(xhr.readyState == 4) {
+          callback(false);
+        }
+      }
+      xhr.open(type, url, true);
+      xhr.send(data);
+    }
+    
+  },
+
+  init = function() {
+    setTimeout(function() {
+      var el = document.getElementsByTagName('html')[0];
+      el.setAttribute('class', 'on');
+    }, 10);
+  };
+
+  return {
+    fn: fn,
+    init: init
+  }
+
+})();
+
+
+document.addEventListener('DOMContentLoaded', function() {
+  APP.init();
+})
\ No newline at end of file
diff --git a/config.php b/config.php
new file mode 100644
index 0000000..fde5f95
--- /dev/null
+++ b/config.php
@@ -0,0 +1,15 @@
+<?php
+
+  global $config;
+  $config = [];
+
+  // 绋嬪簭瀹夎璺緞
+  $config['path'] = '/';
+  // ID 闀垮害
+  $config['length'] = 4;
+  // 缃戠珯鏍囬
+  $config['title'] = 'CRZ.im';
+  // 缃戠珯绠�浠�
+  $config['description'] = '鏌愬崈宀佺殑鍩熷悕缂╃煭鏈嶅姟';
+
+?>
\ No newline at end of file
diff --git a/inc/class/database.db b/inc/class/database.db
new file mode 100644
index 0000000..8c86ca7
Binary files /dev/null and b/inc/class/database.db differ
diff --git a/inc/class/db.class.php b/inc/class/db.class.php
new file mode 100644
index 0000000..b251bfc
--- /dev/null
+++ b/inc/class/db.class.php
@@ -0,0 +1,45 @@
+<?php
+
+  class db  {
+
+    function __construct() {
+      $this->db = new PDO('sqlite:' . dirname(__FILE__) . '/database.db');
+      $this->init_tab();
+    }
+
+    // 鍒濆鍖栨暟鎹簱缁撴瀯
+    function init_tab() {
+      // 缃戝潃琛�
+      $this->db->exec("CREATE TABLE urls(
+        id char(8) PRIMARY KEY,  
+        url longtext,  
+        ip varchar(16),
+        ua varchar(255)
+      )");
+    }
+
+    // 鏌ヨ琛ㄥ唴瀹�
+    function query($name, $rule = '') {
+      $query = $this->db->prepare("SELECT * FROM $name $rule");
+      $query->execute();
+      $result = $query->fetchAll();
+      return $result;
+    }
+
+    // 鎻掑叆琛ㄥ唴瀹�
+    function insert($tab, $key, $val) {
+      $exec = $this->db->exec("INSERT INTO $tab ($key) VALUES($val)");
+      if(!$exec) return false;
+      $this->db->beginTransaction();
+    }
+
+    // 鍒犻櫎琛ㄥ唴瀹�
+    function delete($tab, $rule = '') {
+      $exec = $this->db->exec("DELETE FROM $tab $rule");
+      if(!$exec) return false;
+      $this->db->beginTransaction();
+    }
+
+  }
+
+?>
\ No newline at end of file
diff --git a/inc/class/url.class.php b/inc/class/url.class.php
new file mode 100644
index 0000000..9e2e10c
--- /dev/null
+++ b/inc/class/url.class.php
@@ -0,0 +1,70 @@
+<?php
+
+  class url {
+
+    function __construct() {
+      global $db_c;
+      $this->db = $db_c;
+    }
+
+    // 鐢熸垚鐭湴鍧�
+    public function set_url($url, $size = 4) {
+      $id = $this->get_id($url);
+      if(!$id) {
+        $id = $this->create_id($url, $size);
+        $ip = get_ip();
+        $ua = get_ua();
+        $this->db->insert('urls', 'id, url, ip, ua', "'$id', '$url', '$ip', '$ua'");
+      }
+      $s_url = get_uri() . $id;
+      return $s_url;
+    }
+
+    // 鐢熸垚鍦板潃 ID
+    public function create_id($url, $size = 4) {
+      $md5 = md5($url);
+      // 闅忔満鎶藉彇 MD5 涓殑瀛楃浣滀负 ID
+      $id = '';
+      for($i = 0; $i < $size; $i++) {
+        $rand_id = rand(0, strlen($md5) - 1);
+        $id .= $md5[$rand_id];
+      }
+      // ID 妫�娴�
+      if($this->has_id($id)) {
+        return $this->create_id($url, $size);
+      } else {
+        return $id;
+      }
+    }
+
+    // 鏌ヨ ID 鍙�
+    public function get_id($url) {
+      $result = $this->db->query('urls', "WHERE url = '$url'");
+      (count($result) > 0) ? $opt = $result[0]['id'] : $opt = false;
+      return $opt;
+    }
+
+    // 鏌ヨ鐩爣鍦板潃
+    public function get_url($id) {
+      $result = $this->db->query('urls', "WHERE id = '$id'");
+      (count($result) > 0) ? $opt = $result[0]['url'] : $opt = false;
+      return $opt;
+    }
+
+    // 妫�娴� ID 鏄惁宸茬粡瀛樺湪
+    public function has_id($id) {
+      $result = $this->db->query('urls', "WHERE id = '$id'");
+      (count($result) > 0) ? $opt = true : $opt = false;
+      return $opt;
+    }
+
+    // 娓呯┖鐭湴鍧�
+    public function clean_urls() {
+      $del = $this->db->delete('urls');
+      if($del) return true;
+      return false;
+    }
+
+  }
+
+?>
\ No newline at end of file
diff --git a/inc/functions.php b/inc/functions.php
new file mode 100644
index 0000000..b7e07c1
--- /dev/null
+++ b/inc/functions.php
@@ -0,0 +1,59 @@
+<?php
+
+  // 鑾峰彇缃戠珯鏍囬
+  function get_title() {
+    global $config;
+    return $config['title'];
+  }
+
+  // 鑾峰彇缃戠珯绠�浠�
+  function get_description() {
+    global $config;
+    return $config['description'];
+  }
+
+  // 鑾峰彇鐢ㄦ埛 IP
+  function get_ip() {
+    $ip = '0.0.0.0';
+    if(!empty($_SERVER['HTTP_CLIENT_IP'])){
+      $ip = $_SERVER['HTTP_CLIENT_IP'];
+    } else if(!empty($_SERVER['HTTP_X_FORWARDED_FOR'])){
+      $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
+    } else if(!empty($_SERVER['HTTP_X_FORWARDED'])) {
+      $ip = $_SERVER['HTTP_X_FORWARDED'];
+    } else if(!empty($_SERVER['HTTP_X_CLUSTER_CLIENT_IP'])) {
+      $ip = $_SERVER['HTTP_X_CLUSTER_CLIENT_IP'];
+    } else if(!empty($_SERVER['HTTP_FORWARDED_FOR'])) {
+      $ip = $_SERVER['HTTP_FORWARDED_FOR'];
+    } else if(!empty($_SERVER['HTTP_FORWARDED'])) {
+      $ip = $_SERVER['HTTP_FORWARDED'];
+    } else if(!empty($_SERVER['REMOTE_ADDR'])) {
+      $ip= $_SERVER['REMOTE_ADDR'];
+    } else if(!empty($_SERVER['HTTP_VIA'])) {
+      $ip = $_SERVER['HTTP_VIA '];
+    }
+    return $ip;
+  }
+
+  // 鑾峰彇鐢ㄦ埛 UserAgent
+  function get_ua() {
+    $ua = 'N/A';
+    if(!empty($_SERVER['HTTP_USER_AGENT'])) $ua = $_SERVER['HTTP_USER_AGENT'];
+    return $ua;
+  }
+
+  // 鑾峰彇绋嬪簭鎵�鍦ㄨ矾寰�
+  function get_uri() {
+    global $config;
+    // 鑾峰彇浼犺緭鍗忚
+    $url = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')) ? 'https://' : 'http://';
+    // 鑾峰彇鍩熷悕
+    $url .= $_SERVER['HTTP_HOST'];
+    // 鑾峰彇绋嬪簭鎵�鍦ㄨ矾寰�
+    $url .= $config['path'];
+    if(substr($url, strlen($url) - 1) != '/') $url .= '/';
+
+    return $url;
+  }
+
+?>
\ No newline at end of file
diff --git a/inc/index.php b/inc/index.php
new file mode 100644
index 0000000..6c9ed5c
--- /dev/null
+++ b/inc/index.php
@@ -0,0 +1 @@
+<?php exit; ?>
\ No newline at end of file
diff --git a/inc/require.php b/inc/require.php
new file mode 100644
index 0000000..9d34574
--- /dev/null
+++ b/inc/require.php
@@ -0,0 +1,13 @@
+<?php
+
+  // 寮曞叆閰嶇疆鏂囦欢
+  require_once(dirname(__FILE__) . '/../config.php');
+  // 寮曞叆鍩熷悕缂╁潃搴�
+  require_once('functions.php');
+  require_once('class/db.class.php');
+  require_once('class/url.class.php');
+  // 鍒濆鍖栨暟鎹簱
+  global $db_c;
+  $db_c = new db();
+  
+?>
\ No newline at end of file
diff --git a/index.php b/index.php
new file mode 100644
index 0000000..65aee88
--- /dev/null
+++ b/index.php
@@ -0,0 +1,46 @@
+<?php
+
+  // 寮曞叆绫�
+  require_once('inc/require.php');
+
+  if(isset($_GET['id'])) {
+    
+    $url_c = new url();
+
+    // 鑾峰彇鐩爣缃戝潃
+    $url = $url_c->get_url($_GET['id']);
+    // 閲嶅畾鍚戣嚦鐩爣缃戝潃
+    if($url) {
+      header('Location: ' . $url);
+      exit;
+    }
+
+  }
+
+?>
+<!DOCTYPE HTML>
+<html>
+  <head>
+    <meta charset="utf-8" />
+    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
+    <title><?php echo get_title() . ' - ' . get_description(); ?></title>
+    <meta name="description" content="" />
+    <meta name="keyword" content="" />
+    <link type="text/css" rel="stylesheet" href="asset/css/main.css" />
+  </head>
+  <body>
+    <div class="wrap">
+      <div class="meta">
+        <h2 class="title"><?php echo get_title(); ?></h2>
+        <h3 class="description"><?php echo get_description(); ?></h3>
+      </div>
+      <div class="link-area">
+        <input id="url" type="text" placeholder="https://" />
+        <input id="submit" type="button" value="Generate" onclick="APP.fn.setUrl(this)" />
+      </div>
+      <div class="footer">Copyright &copy; <a href="https://github.com/Caringor/" title="Carignor" target="_blank">Caringor</a> / <a href="https://github.com/Caringor/CRZ.im/" title="Fork me on Github" target="_blank">Fork me on Github</a>.</div>
+    </div>
+  </body>
+  <!-- JS -->
+  <script type="text/javascript" src="asset/js/app.js"></script>
+</html>
\ No newline at end of file
diff --git a/info.php b/info.php
new file mode 100644
index 0000000..c9f5eeb
--- /dev/null
+++ b/info.php
@@ -0,0 +1 @@
+<?php phpinfo(); ?>
\ No newline at end of file
diff --git a/nginx.txt b/nginx.txt
new file mode 100644
index 0000000..1d7cc2c
--- /dev/null
+++ b/nginx.txt
@@ -0,0 +1,11 @@
+location / {
+  try_files $uri $uri/ =404;
+}
+
+location ~ /inc/ {
+  return 403;
+}
+
+location ~* ^/(?![asset|api]) {
+  rewrite (\d+|\w+)$ /index.php?id=$1;
+}
\ No newline at end of file