Introduction to CodeIgniter

Introduction to Introduction to CodeIgniter Zeroplex 2012/06/14

初學 PHP 買書線上文件 2

B U T 3

書上不會提到 4

重複的程式碼 $user = trim( mysql_escape_string($_POST[‘user’] ) mysql_escape_string($_POST[‘user’] ) ); $pwd
= trim( mysql_escape_string($_POST[‘pwd’] ) mysql_escape_string($_POST[‘pwd’] ) ); 5

6 參考 PHPWind 程式碼，後重新修改自用程式架構

架構 $ tree • • ├── html ├── lib ├──
upload ├── config.php.sample ├── ├── global.php └── index.php 7

混亂的程式碼 8

混亂的程式碼 HTML 9

混亂的程式碼 CSS 10

混亂的程式碼 PHP 13

混亂的程式碼 Smarty Template Engine 14

問題仍然存在相當耗時不夠安全不容易重複使用佈署困難 15

PHP Frameworks Modules Templates Templates MVC DB Objects Validation Validation
16

PHP Frameworks 17

PHP Frameworks 較知名的 framework Zend CakePHP Symfony 18

Benchmarks ab –c 100 –n 30000 19

拿不定主意 20

直到直到 PHPconf 2011 21

So .... 25

CodeIgniter CodeIgniter

CodeIgnter 麻雀雖小五藏俱全 27

CodeIgnter 麻雀雖小五藏俱全沒有複雜的設定 28

CodeIgnter 麻雀雖小五藏俱全沒有複雜的設定效能佳 29

CodeIgnter 麻雀雖小五藏俱全沒有複雜的設定效能佳中文文件 30

CodeIgnter 麻雀雖小五藏俱全沒有複雜的設定效能佳中文文件 (其實只有一半是中文 XD) 31

CodeIgniter 簡介 Installation Structure Structure Configuration URLs Controller / Model
/ View Controller / Model / View Built-in Functions Sparks 32

Installation 1. wget 1. wget 2. unzip CodeIgniter-2.1.0.zip ..... Done
! 33

如果沒有成功 35

不要讓日落靠近 36

Structure ─── application ├── config ├── config ├── controllers ├──
models ├── views ├── ........ ├── ........ ├── system └── index.php 37

Structure ─── application 網站程式所在位置 ├── config ├── config ├── controllers
├── models ├── views ├── ........ ├── ........ ├── system └── index.php 38

Structure ─── application ├── config ├── config ├── controllers ├──
models ├── views ├── ........ ├── ........ ├── system CodeIgniter 核心 └── index.php 39

Configuration application/config config.php database.php autoload.php 40

Configuration application/config site URL config.php ─── database.php autoload.php site URL
charset log/cache path session / cookie 41

Configuration application/config config.php database.php autoload.php 42

Configuration application/config config.php database.php autoload.php ─── 在程式執行時自動載入模組或函式 43

URLs URL segment map to Controller index.php/post/show/2385 44

URLs URL segment map to Controller index.php/post/show/2385 Controller Argument 45
Argument Method

URLs class Post extends CI_Controller { class Post extends CI_Controller
{ public function show($id){ // Get post information } } } 46

Controller application/controller/welcome.php: class Welcome extends CI_Controller { public function index(){
$this->load-> view('welcome_message'); } } 47

Your Own Controller controller/hello.php class Hello extends CI_Controller { class
Hello extends CI_Controller { public function greeting($id){ echo “Hello $id”; } } } 50

Your Own Controller controller/hello.php class Hello extends CI_Controller { class
Hello extends CI_Controller { public function greeting($id){ echo “Hello $id”; } } } Print ‘Hello C4Labs’ : index.php/hello/greeting/C4Labs 51

Your Own Controller Deny method from URL access class Hello
extends CI_Controller { public function _greeting($id){ echo “Hello $id”; echo “Hello $id”; } } 52 Underline

View 位於 application/view/ 由 controller 載入 Template parser 53

View application/view/hello.php <html><body> <h1> Hello <?php echo $id;?> Hello <?php
echo $id;?> </h1> </html></body> 54

View Load view function hello($id){ $data[‘id’] = $id; $this->load->view(‘hello’, $data);
$this->load->view(‘hello’, $data); } 55

Template Parser <html><body> <h1> <h1> Hello <?php echo $id;?> </h1>
</html></body> PHP </html></body> 56 PHP

Template Parser <html><body> <h1> <h1> Hello {id} </h1> </html></body> </html></body>
57

Template Parser function hello($id){ $this->load->library(‘parser’); $this->load->library(‘parser’); $data[‘id’] = $id; $this->parser->
parse(‘hello', $data); parse(‘hello', $data); } 58

Model Process data in database class User extends CI_Model{ function
getUser($uid) { ... } function deleteUser($uid) { ... } function deleteUser($uid) { ... } } 59

Model Load model in controller $this->load->model(‘user’); $user = $this->user->getUser(2); 60

Built-in Functions Library Input Template Parser File Uploading Helper URL
URL CAPTCHA 61

Built-in Functions Load $this->load->library(‘upload’); $this->load->helper(‘url’); Use $this->upload->data(); $this->upload->data(); echo site_url();
62

No enough? 63

Sparks ! 64

Sparks Package management system for CodeIgniter CodeIgniter Easy to install
Lots of useful packages Makes you lazy 65

Install Sparks php -r "$(curl -fsSL http://getsparks.org/go-sparks)" 66

Using Sparks $ php tools/spark search redis menu - The
Menu library is used to .... menu - The Menu library is used to .... redis - A CodeIgniter library to .... $ php tools/spark install redis Retrieving spark detail from getsparks.org ........ Spark installed to ./sparks/redis/0.3.0 - You're on fire! 67

Using Packages Load and call $this->load->spark(‘redis/0.3.0’); $this->redis->set(‘foo’, ‘bar’); $this->redis->set(‘foo’, ‘bar’);
68

More CodeIgniter 中文討論區 http://www.codeigniter.org.tw/forum/ http://www.codeigniter.org.tw/forum/ CodeIgniter Wiki http://codeigniter.com/wiki 69

Q & A 70

Live Debug Demo 71

Thanks You 72

Introduction to CodeIgniter

Introduction to CodeIgniter

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