phpconf 2011 introduction_to_codeigniter

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快速上手 快速上手 CodeIgniter CodeIgniter 吳柏毅 Bo-Yi Wu appleboy http://blog.wu-boy.com/ 2011.11.12 2011 PHP Conference

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http://phpconf.tw/2011 快速上手 CodeIgniter 吳柏毅 (Bo-Yi Wu)/appleboy Introduction to CodeIgniter

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Page 1: Phpconf 2011 introduction_to_codeigniter

快速上手 快速上手 CodeIgniterCodeIgniter

吳柏毅 Bo-Yi Wuappleboy

http://blog.wu-boy.com/2011.11.12

2011 PHP Conference

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內容皆採用 創用 CC 姓名標示 相同方式分享 3.0 台灣 授權條款

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$this->load->view('about/me')

瑞昱半導體股份有限公司 Linux Kernel Driver, Sencha Touch Web App.

CodeIgniter 台灣站長 http://codeigniter.org.tw 翻譯線上文件

提交 Patch給官方 CodeIgniter

個人 Github https://github.com/appleboy

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本投影片適合尚未使用過Framework且對於 PHP已經有些

基礎的Web Developer

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Why use Framework?

合作方式 (不管你是團隊還是 Soho) 程式設計師與程式設計師

程式設計師與前端設計師

加速開發 幫你寫好一堆功能模組 (分頁 ,驗證碼 ,多國語系 ) 幫你解決安全性問題 ($_GET, $POST ...)

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在 2009年 1月畢業進入資策會的第 1份工作

CodeIgniter與我

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為了尋找一套適合同事們一起共同開發的環境架構

(Zend, Cake, Symfony, Yii...)

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$this->load->view('Why')

在眾多 Framework選擇下為什麼要使用 CodeIgniter

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初學者非用 CodeIgniter 的優勢

懶人安裝方法

架構清楚明瞭

繁體中文文件

基礎MVC架構 (日後可跳往其它 Framework)

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懶人安裝方法

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下載 + 解壓縮 = 安裝完成適用於任何作業系統

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真的這麼容易安裝 ?

進入下載網址 http://www.codeigniter.org.tw/downloads

解壓縮檔案 unzip CodeIgniter_2.X.X.zip

輸入網址 http://your_host_name/codeigniter/

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$this->load->view('welcome')

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如果安裝失敗呢?

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你還是不要接觸 PHP會比較好(開玩笑的 )

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CodeIgniter架構清楚明瞭

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CodeIgniter 目錄

application (網站主目錄 )

system (CodeIgniter 核心目錄 )

user_guide (CodeIgniter 使用手冊 )

index.php (網站主程式 )

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開發多網站目錄架構(大部份 Framework做法 )

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多網站目錄架構

system (升級版本只需要換此目錄 )

web_01

index.php

application

web_01

index.php

application

web_02

index.php

application

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簡易清楚繁體中文文件(解決初學者對於英文的排斥 )

http://codeigniter.org.tw/user_guide/

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初學者請直接閱讀一般主題

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必讀資料

一般主題 CodeIgniter URLs 控制器 (Controllers) 檢視 (Views) 模型 (Models)

類別參考 Database 類別 Input 類別 Loader 類別

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進階閱讀

一般主題● 新增程式庫 (Library)● 新增核心類別

● Hooks – 擴充核心● URI 路由

類別參考● Email 類別● File Uploading 類別● Form Validation 類別● Language 類別● Output 類別● Pagination 類別● Session 類別

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以上就是足以讓大家嘗試的理由

簡單 容易 好上手

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來看看 CodeIgniter基本MVC架構

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Web Server

Routing

Controller

ViewModel

LayoutDatabase

Client Browser

MVC Architecture

Library Helper

Caching

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撰寫第一個 Hello World

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View

Controller

View (views/welcome.php)<html> <body> Hello <?php echo $username; ?> </body></html>

Controller (controllers/welcome.php) function welcome($id) { $data[‘username’] = $id; $this->load->view(“welcome”, $data);

}

Hello Appleboy

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CodeIgniter 功能特性介紹

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自訂 URL

還在用 Apache模組mod_rewrite自訂特殊 URL嘛?

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CodeIgniter內建自訂 URL功能

$route['products/([a-z]+)/(\d+)'] = "$1/id_$2" products/os/1234 呼叫 os controller 傳入參數 id_1234

網站出現重大問題需要停機修復 $route['(:any)'] = "system/fix" $route['.*'] = “system/fix”

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High Performance Framework

CodeIgniter預設不會載入未使用模組用到時自行載入

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High Performance Framework

載入 Library $this->load->library(array('email', 'table'));

載入 view $this->load->view('file_name');

載入model $this->load->model('model_name');

載入 helper $this->load->helper('help_name');

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CodeIgniter Cahe System

index

Caching

Routing

Application Controller

Cache 存在

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Cache 使用方式

Cache 可以寫在 Controller 任意地方 $this->output->cache(n); n代表分鐘

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Cache 缺點

當 expire time尚未過期

網頁資訊一定是舊的

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CodeIgniter Cache 機制

將 time()+n*60 寫入到 cache檔案最前面

每次 Request 則取出跟 time() 比對時間 若 cache time > time()直接輸出 cache file 若 cache time < time()刪除 cache並且新增 cache

缺點 : 適用於靜態檔案

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如果用在動態檔案呢 ?

官方無提供刪除 cache檔案函式請自行 Patch程式碼

http://goo.gl/03IrZ$this->output->delete_cache('post/12')$this->output->delete_cache('post/list')

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支援簡單 Command Line

CodeIgniter 2.x.x 版本支援Windows, Linux crontab 搭配背景執行處理

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好處

CLI去執行您的 cron-jobs而不需要使用 curl

互動式 "tasks" 工作 , 像是動態改變權限、清除cache …目錄、執行備份 等。

任意搭配其他程式 ,例如 Perl, C++, Python

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用法

$ php index.php controller method$ php index.php welcome index

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避免網頁執行到 command line

將 corn-jobs 移出 apache可執行目錄

用 PHP判斷,確保瀏覽器不能執行 cron-jobs php_sapi_name() === "cli" defined('STDIN')

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處理 $_POST,$_GET資料

if ( ! isset($_POST['user']))

$user = FALSE;

else

$user = $_POST['user'];

$user = (! isset($_POST['user'])) ? FALSE : $_POST['user'];

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不需要這麼麻煩

$_POST資料 $user = $this->input->post('user');

$_GET資料 $user = $this->input->get('user');

一起判斷 $user = $this->input->get_post('user'); 先找 $_POST['user'], 後找 $_GET['user']

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避免 XSS 的攻擊

$user = $this->input->post('user', TRUE); $user = $this->input->get('user', TRUE); $user = $this->input->get_post('user', TRUE);

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良好的程式設計

善用 === 做判斷

數字請用 intval()或 (int)過慮 $id = intavl($id); $id = (int) $id;

用 is_array, is_int, is_bool, is_string判斷類型

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表單驗證

$this->form_validation->set_rules('username', '帳號 ', 'trim|required|min_length[5]|max_length[12]|xss_clean');

$this->form_validation->set_rules('password', '密碼 ', 'trim|required|md5');

$this->form_validation->set_rules('email', '電子郵件 ', 'trim|required|valid_email');

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分頁

$this->load->library('pagination'); $config['base_url'] =

'http://example.com/index.php/test/page/'; $config['total_rows'] = 200; $config['per_page'] = 20; $this->pagination->initialize($config); echo $this->pagination->create_links();

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Email 寄信

多重協定 : Mail, Sendmail, and SMTP

多重收件人

副本 (CC)和密件副本 (BCCs)

支援 HTML或者是純文字 (Plaintext)郵件

附件檔案

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使用方式

$this->load->library('email');

$this->email->from('[email protected]', 'Your Name');

$this->email->to('[email protected]');

$this->email->cc('[email protected]');

$this->email->bcc('[email protected]');

$this->email->subject('Email Test');

$this->email->message('Testing the email class.');

$this->email->send();

echo $this->email->print_debugger();

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影像縮圖功能

修改影像的尺寸

建立縮圖

影像裁剪

影像旋轉

浮水印

支援 GD/GD2, NetPBM以及 ImageMagick

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以上只是一些CodeIgniter Library基本介紹想了解更多功能請上

User Guidehttp://goo.gl/7PGnW

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光是 CodeIgniter內建的功能還不能滿足您嘛?

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歡迎使用 http://getsparks.org/

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Ruby有 RubyGemsNode.js 有 npm

CodeIgniter有 sparks

What is Sparks?

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What is Sparks?

Package Management System

Making Code Easy to Find, Create, and Distribute

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Get Sparks tool Now!!

一行指令就安裝完成$ php -r "$(curl -fsSL http://getsparks.org/go-sparks)"

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Installing Sparks with the Spark Manager

http://goo.gl/lHmCX$ php tools/spark install -v1.0.4 google-url-shortener

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Load Sparks Library

$this->load->spark(google-url-shortener/1.0.4');$short_url = $this->google_url_api->shorten($url);echo $url . " => " . $short_url->id . "<br />";

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好用 sparks 介紹

ion_auth http://goo.gl/Au4kM E-mail 啟動帳號 ,忘記密碼 ..等 單一帳號多重群組

User/Email雙重認證選擇 Zend ACL Library 導入權限 搭配 Facebook, Google Auth API 認證

Template http://goo.gl/BN5g6 動態讀取 CSS或 Javascript

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CodeIgniter 重大改變 2009->2011

版本演進 1.7.x → 2.x.x 捨棄 PHP4 效能改善

版本控制 Bitbucket → Github 加速大家貢獻

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如果有任何問題都可以到討論區留言http://www.codeigniter.org.tw/forum/

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歡迎加入 CodeIgniter翻譯

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https://github.com/appleboy/PHP-CodeIgniter-Framework-Taiwan

縮址 : http://goo.gl/5CU9N

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Thank You.