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Collection
Collection
实现效果
自定义控制器和方法
<?php//配偶文件//数据库配置信息const DATABASE = ['type' => 'mysql','dbname' => 'phpedu','username' => 'root','password' => 'root'];//根目录const ROOT_PATH = __DIR__;//应用相关const APP = [//默认控制器'default_controller' => 'index',//控制器默认使用的方法'default_action' => 'index',];
<?php//核心类库namespace phpcn;use PDO;class Model{//创建链接对象protected $db;//Model对象实例化时,链接数据库public function __construct($dsn, $username, $password){$this->db = new PDO($dsn, $username, $password);}//公共方法供用户进行数据库的操作public function getAll($n = 5){$stmt = $this->db->prepare("SELECT * FROM `staff` LIMIT $n");$stmt->execute();return $stmt->fetchAll(PDO::FETCH_ASSOC);}}
<?php//核心类库namespace phpcn;class View{//视图类实现模板的赋值和模板的渲染public function display($staffs){include ROOT_PATH . '/view/' . 'show.php';}}
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>员工信息表</title></head><body><table><caption>员工信息表</caption><thead><tr><th>id</th><th>姓名</th><th>性别</th><th>邮箱</th></tr></thead><tbody><?php foreach ($staffs as $staff) : ?><?php extract($staff) ?><tr><td><?= $id ?></td><td><?= $name ?> </td><td><?= $gender ? "男" : "女" ?> </td><td><?= $email ?> </td></tr><?php endforeach ?></tbody></table></body></html>
<?php//核心类库namespace phpcn;class Controller{//模型对象protected $model;//视图对象protected $view;//控制器实例化时要确保模型与对象可用public function __construct($model, $view){$this->model = $model;$this->view = $view;}public function index($n = 5){//通过模型中的公共方法获取数据$staffs = $this->model->getAll($n);//将数据赋值到模板中,通过视图类渲染模板$this->view->display($staffs);}}
<?phpnamespace phpcn;class UserController extends Controller{public function user(){echo '<h2>Hello PHPcn</h2>';}}
<?php//入口文件namespace phpcn;//加载配置项require __DIR__ . '/config.php';//加载核心类库require ROOT_PATH . '/core/Model.php';require ROOT_PATH . '/core/View.php';require ROOT_PATH . '/core/Controller.php';//加载自定义模型require ROOT_PATH . '/model/StaffModel.php';//结构数据库参数数组extract(DATABASE);//实例化模型类$dsn = sprintf('%s:dbname=%s', $type, $dbname);$model = new StaffModel($dsn, $username, $password);//实例化视图类$view = new View(null, null);//获取自定义控制器和自定义方法$c = $_GET['c'] ?? APP['default_controller'];$a = $_GET['a'] ?? APP['default_action'];//获取定义控制器名$class = ucfirst($c) . 'Controller';//加载自定义控制器require ROOT_PATH . '/Controller/' . $class . '.php';//完整控制器类名$fullclass = __NAMESPACE__ . '\\' . $class;$controller = new $fullclass($model, $view);$controller->$a(10);//执行自定义控制器和方法//index.php?c=user&a=user