后端开发|php教程
ThinkPHP,用户注册,登录,留言,实例
后端开发-php教程
本文以实例形式讲述ThinkPHP实现的包括用户的注册、登录以及留言等功能，这里需要大家注意的是，在存在用户模型的情况下实例化一个用户类的时候使用D方法来实现。
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UserActiion.class.php页面：
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create();$result = $user->add();if($result){$this->assign("jumpUrl","__APP__/index/index");$this->success(注册成功！);}else{//echo $user->getError();$this->assign("jumpUrl","__APP__/user/register");$this->error($user->getError());}}public function register(){$this->display();}public function login(){$this->display();}public function checklogin(){$username = $_POST[username];$passwd = $_POST[passwd];$user = D("user");//$User->where(id=8)->find();这里的where 语句要注意一下，如果是其他字段的话后面一定要有单引号$userinfo = $user->where("username =$username\")->find();if(!empty($userinfo)){if($userinfo[passwd] == $passwd){Cookie::set(userid,$userinfo[id],time()+3600*24);Cookie::set(username,$username,time()+3600*24);Cookie::set(lastlogintime,time(),time()+3600*24);$this->assign("jumpUrl","__APP__/index/index");$this->success(登陆成功！);}else{$this->assign("jumpUrl","__APP__/user/login");$this->error(密码出错，请重新输入！);}}else{$this->assign("jumpUrl","__APP__/user/login");$this->error(用户名不存在！);}}public function loginout(){Cookie::delete(username);Cookie::delete(lastlogintime);$this->assign("jumpUrl","__APP__/index/index");$this->success(您已经成功退出，欢迎您的下次登录！);}}
IndexAction.class.php页面：
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create();if(!$result){$this->assign("jumpUrl","__URL__/index");$this->error($content->getError());//如果创建失败，表示验证没有通过，输出错误信息}else{//验证通过，进行其他操作$content->userid=Cookie::get(userid);$content->add();$this->assign("jumpUrl","__URL__/index");$this->success(添加成功！);}} // 数据查询操作 public function index() {$content = new ContentModel();$list = $content->findAll(); //用户的cookie$username = Cookie::get(username);$lastlogintime = Cookie::get(lastlogintime);$this->assign(list,$list); $this->assign( itle,我的首页);$this->assign(username,$username);$this->assign(lastlogintime,$lastlogintime);$this->display(); } // 删除操作public function delete(){$content = new ContentModel();$id = $_GET[id];if($content->where("id=$id")->delete()){$this->assign("jumpUrl","__URL__/index");$this->success(删除成功！);}else{$this->assign("jumpUrl","__URL__/index");$this->error(删除失败！);}} // 编辑操作public function edit(){$content = new ContentModel();$id = $_GET[id];if($id != \){//$data = $content->select($id);$data = $content->where("id=$id")->select();if(!empty($data)){$this->assign(data,$data);}else{echo "数据为空！";}}$this->assign( itle,编辑页面);$this->display();}// 更新操作public function update(){$content = new ContentModel();//直接使用create(),自动会帮你进行数据的传值/*$content->create();$content->save(); // 根据条件保存修改的数据echo "更新数据成功！";*/// 使用post 传值过来，进行更新$id = $_POST[id];if($id != \){$data[id] = $id;$data[ itle] = $_POST[ itle];$data[content] = $_POST[content];if($content->save($data))// 根据条件保存修改的数据{$this->assign("jumpUrl","__URL__/index");$this->success(更新数据成功！);}else{$this->assign("jumpUrl","__URL__/index");$this->success(更新数据失败！);}}else{echo "保存数据失败！";}}}?>
ContentModel.class.php页面：
UserModel.class.php页面：
这里需要注意的是，使用自动验证的时候 实例化时要用 $user = D(“user”) 而不能用 $user = M(“user”),用M这种方法会报错，D函数用于实例化Model,M函数用户实例化一个没有模型的文件。
success.html页面：
