<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use App\Services\SmsService;
class SmsServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap the application services.
     *
     * @return void
     */
    public function boot()
    {
        //
    }

    /**
     * Register the application services.
     *
     * @return void
     */
    public function register()
    {
        $this->app->singleton('sms',function(){

            return new SmsService();

        });

        //使用bind绑定实例到接口以便依赖注入

        $this->app->bind('App\Contracts\SmsContract',function(){

            return new SmsService();

        });
    }
}