lavavel连接数据库的增删改查操作

配置修改：

1. .env中进行配置：

---------------

APP_ENV=local

APP_DEBUG=true

APP_KEY=FPg9LRkHTj5j14ig7ETzQhG29r5sEWNR

DB_HOST=127.0.0.1

DB_DATABASE=laravel_demo

DB_USERNAME=root

DB_PASSWORD=root

CACHE_DRIVER=file

SESSION_DRIVER=file

QUEUE_DRIVER=sync

REDIS_HOST=127.0.0.1

REDIS_PASSWORD=null

REDIS_PORT=6379

MAIL_DRIVER=smtp

MAIL_HOST=mailtrap.io

MAIL_PORT=2525

MAIL_USERNAME=null

MAIL_PASSWORD=null

MAIL_ENCRYPTION=null

------------------------

2.在控制器中引入model和db就想下面一下

-----------------------

/*当进行数据库操作的时候需要引用下面的两个类*/

use Illuminate\Support\Facades\DB;

use Illuminate\Database\Eloquent\Model;

3.下面是方法进行数据库的操作

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

use App\Http\Requests;

/*当进行数据库操作的时候需要引用下面的两个类*/

use Illuminate\Support\Facades\DB;

use Illuminate\Database\Eloquent\Model;

class HomeController extends Controller

{

//

public function getIndex()

{

return "this is getIndex";

}

public function getAdd()

{

$res = DB::table('test')->insert([

['id'=>null,'proname'=>'Laravel','age'=>34],

['id'=>null,'proname'=>'Academy','age'=>11],

['id'=>null,'proname'=>'LaravelAcademy','age'=>23]

]);

var_dump($res);

}

public function getShow(){

$users = DB::table('test')->get();

//dd($users);

echo "<pre/>";

var_dump($users);

}

public function getDel(){

$deleted = DB::table('test')->where('id', '>', 2)->delete();

var_dump($deleted);

}

public function getUpdate(){

$affected = DB::table('test')->where('proname','少林寺')->update(['proname'=>'张杰']);

var_dump($affected);

}

}

4.数据库sql：

# Host: localhost (Version: 5.5.40)

# Date: 2016-07-26 17:41:52

# Generator: MySQL-Front 5.3 (Build 4.120)

/*!40101 SET NAMES utf8 */;

#

# Structure for table "test"

#

DROP TABLE IF EXISTS `test`;

CREATE TABLE `test` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`proname` varchar(50) NOT NULL,

`age` int(11) NOT NULL,

PRIMARY KEY (`id`)

) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

#

# Data for table "test"

#

/*!40000 ALTER TABLE `test` DISABLE KEYS */;

INSERT INTO `test` VALUES (1,'张杰',35),(2,'Academy',11),(29,'Laravel',34),(30,'Academy',11),(31,'LaravelAcademy',23),(32,'Laravel',34),(33,'Academy',11),(34,'LaravelAcademy',23),(35,'Laravel',34),(36,'Academy',11),(37,'LaravelAcademy',23);

/*!40000 ALTER TABLE `test` ENABLE KEYS */;