app-api/app/Http/Requests/UserRequest.php

<?php

namespace App\Http\Requests;


class UserRequest extends FormRequest{
    public function rules()
    {
        return [
            'phone'=>'required|regex:"^1\d{10}"',
        ];
    }

    public function messages()
    {
        return [
            'phone.required'=>'手机号不能为空',
            'phone.regex'=>'请输入正确的手机号',
        ];

    }
}