Tag 5 ThinkPHP Schritt-für-Schritt-Schnell-Website-Splicing (5)

<?php
class LoginAction extends Action {
	function index() {
		// 配置页面显示内容
		$this->assign ( 'title', '后台管理系统' );
		$this->display ();
	}
	
	// 用户登录页面
	function login() {
		header ( "Content-Type:text/html; charset=utf-8" );
		
		$username=$_POST['username'];
		$password=md5($_POST['password']);
		
		$User = D ( "User" ); // 参数的User必须首字母大写，否则自动验证功能失效！
		if (! $User->create ()) {
			$this->error ( $User->getError () );
		} else {
			// 查找输入的用户名是否存在
			if ($User->where ( "username ='$username' AND password = '$password'" )->find ()) {
				session ( username, $username );
				$url = U ( '/Index/index/username/' . $username );
				redirect ( $url, 5, '跳转中...' );
			} else {
				$this->error ( '用户名或密码错误' );
			}
		}
}