ThinkPHP5.1中增删改查操作

// application/common/model/User.phpnamespace appcommonmodel;use thinkModel;class User extends Model{    // 定义数据表名称    protected $table = 'user';    // 定义可写字段    protected $fillable = ['name', 'email', 'password'];}

// application/index/controller/UserController.phpnamespace appindexcontroller;use appcommonmodelUser;use thinkController;use thinkRequest;class UserController extends Controller{    // 显示用户添加表单    public function create(){        return $this->fetch();    }    // 处理表单提交    public function save(Request $request){        $data = $request->post();        // 使用模型创建新用户        User::create($data);        // 重定向到用户列表页面

<!-- application/index/view/user/create.html --><form method="post" action="<?php echo url('user/save'); ?>">    <label for="name">姓名：</label>    <input type="text" name="name" id="name" required><br>    <label for="email">邮箱：</label>    <input type="email" name="email" id="email" required><br>    <label for="password">密码：</label>    <input type="password" name="password" id="password" required><br>    <input type="submit" value="添加用户"></form>

// application/index/controller/UserController.php// 删除用户public function delete($id){    // 使用模型删除用户    User::destroy($id);    // 重定向到用户列表页面    $this->success('用户删除成功', 'index');}

<!-- application/index/view/user/index.html --><table>    <thead>        <tr>            <th>ID</th>            <th>姓名</th>            <th>邮箱</th>            <th>操作</th>        </tr>    </thead>    <tbody>        <?php foreach ($users as $user): ?>            <tr>                <td><?php echo $user['id']; ?></td>                <td><?php echo $user['name']; ?></td>                <td><?php echo $user['email']; ?></td>                <td>                    <a href="<?php echo url('user/delete', ['id' => $user['id']]); ?>" onclick="return confirm('确定要删除吗？')">删除</a>                </td>            </tr>        <?php endforeach; ?>    </tbody></table>

// application/index/controller/UserController.php// 显示用户编辑页面public function edit($id){    $user = User::find($id);    return $this->fetch('edit', ['user' => $user]);}

<!-- application/index/view/user/edit.html --><form method="post" action="<?php echo url('user/update', ['id' => $user['id']]); ?>">    <label for="name">姓名：</label>    <input type="text" name="name" id="name" value="<?php echo $user['name']; ?>" required><br>    <label for="email">邮箱：</label>    <input type="email" name="email" id="email" value="<?php echo $user['email']; ?>" required><br>    <label for="password">密码：</label>    <input type="password" name="password" id="password"><br>    <input type="submit" value="更新用户"></form>

// application/index/controller/UserController.php// 处理编辑表单提交public function update(Request $request, $id){    $data = $request->post();    // 使用模型更新用户    User::update($data, ['id' => $id]);    // 重定向到用户列表页面    $this->success('用户更新成功', 'index');}

$users = User::where('age', '>', 18)->select