ThinkPHP验证器使用与规则设置教程

namespace app\validate;

use think\Validate;

class UserValidate extends Validate
{
    protected $rule = [
        'name'  => 'require|max:25',
        'email' => 'require|email',
        'age'   => 'number|between:1,120',
    ];

    protected $message = [
        'name.require' => '姓名不能为空',
        'name.max'     => '姓名最多不能超过25个字符',
        'email.require' => '邮箱必须填写',
        'email.email'   => '邮箱格式不正确',
        'age.number'    => '年龄必须是数字',
        'age.between'   => '年龄必须在1到120之间',
    ];
}

protected $scene = [
    'add'  => ['name', 'email', 'password'],
    'edit' => ['name', 'email'],
];

$validate = new \app\validate\UserValidate();
if (!$validate->scene('add')->check($data)) {
    return $validate->getError();
}

namespace app\controller;

use app\validate\UserValidate;
use think\facade\Request;

class UserController
{
    public function create()
    {
        $data = Request::post();

        $validate = new UserValidate();
        if (!$validate->check($data)) {
            return json(['code' => 400, 'msg' => $validate->getError()]);
        }

        // 验证通过，继续业务逻辑
        return json(['code' => 200, 'msg' => '数据合法']);
    }
}

$validate = new \think\Validate([
    'name'  => 'require|max:25',
    'email' => 'require|email'
]);

if (!$validate->check($data)) {
    return $validate->getError();
}