<?php

namespace app\api\controller\v1;

use think\Controller;

use think\validate;

class Banner extends controller{

    public function index(){

        //http://localhost/thinkphp5/public/index.php/api/v1.Banner/index

    }

    public function  getBanner(){

        $data=array(

            'name'=>'dash',

            'email'=>'wolichihua2011@163.com'

        );

        //独立验证

        $validate=new Validate([

            'name'=>'require|max:10',

            'email'=>'email'

        ]);

        //batch()批量验证 否则只返回最后一个getError验证信息

        $result=$validate->batch()->check($data);//返回布尔

        var_dump($result);

        var_dump($validate->getError());//返回错误信息

    } 

}

<?php

namespace app\api\controller\v1;

use think\Controller;

use think\validate;

//use app\api\validate\TestValidate;

class Banner extends controller{

    public function index(){

        //http://localhost/thinkphp5/public/index.php/api/v1.Banner/index

    }

    public function  getBanner($id){

        $data=array(

            'name'=>'dash',

            'email'=>'wolichihua2011@163.com'

        );

        //验证器 直接new

        $validate= new \app\api\validate\TestValidate();

         //或者引入命名空间在new use app\api\validate\TestValidate （application/api/validate/TestValidate.php）

　　     $validate= new TestValidate();//必须有这个命名空间 use app\api\validate\TestValidate

        //batch()批量验证 否则只返回最后一个getError验证信息

        $result=$validate->batch()->check($data);//返回布尔

        var_dump($result);

        var_dump($validate->getError());//返回错误信息

    } 

}

application/api/validate/TestValidate.php

<?php

namespace app\api\validate;

use think\Validate;

class TestValidate extends Validate{

    protected $rule =[

        'name'=>'require|max:10',

        'email'=>'email'        

    ];

}

<?php

namespace app\api\controller\v1;

use think\Controller;

use think\validate;

use app\api\validate\IDMustBePositiveInt;

class Banner extends controller{

    public function index(){

        http://localhost/thinkphp5/public/index.php/api/v1.Banner/index

    }

    public function  getBanner($id){

        (new IDMustBePositiveInt())->goCheck();

    } 

}

<?php

namespace app\api\validate;

use think\Request;

use think\Validate;

use think\Exception;

class BaseValidate extends Validate{

    public function goCheck(){

        // 获取http参数

        // 对这些参数做检验

        $request= Request::instance();

        $params=$request->param();

        $result=$this->check($params);

        if (!$result) {

            $error=$this->error;

            throw new Exception($error, 1);

        }else{

            return true;

        }

    }

}

<?php

namespace app\api\validate;

class IDMustBePositiveInt extends BaseValidate{

    protected $rule=array(

        'id'=>'require|isPositiveInteger'

    );

    //自定义验证规则

    protected function isPositiveInteger($value, $rule='', $data='', $field='')

    {

        if (is_numeric($value) && is_int($value + 0) && ($value + 0) > 0) {

            return true;

        }

        return $field . '必须是正整数';

    }

}