本文实例讲述了laravel框架数据库配置及操作数据库。分享给大家供大家参考，具体如下：
laravel 数据库配置
数据库配置文件为项目根目录下的config/database.php
//默认数据库为mysql
'default' => env('DB_CONNECTION', 'mysql'),
'mysql' => [
'driver' => 'mysql',
'host' => env('DB_HOST', '127.0.0.1'),
'port' => env('DB_PORT', '3306'),
'database' => env('DB_DATABASE', 'forge'),
'username' => env('DB_USERNAME', 'forge'),
'password' => env('DB_PASSWORD', ''),
'unix_socket' => env('DB_SOCKET', ''),
'charset' => 'utf8mb4',
'collation' => 'utf8mb4_unicode_ci',
'prefix' => '',
'strict' => true,
'engine' => null,
],
发现都在调用env函数，找到env文件，即根目录下的.env文件，
打开修改配置参数
DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=homestead DB_USERNAME=homestead DB_PASSWORD=secret
修改为本地的数据库信息：
DB_CONNECTION=mysql DB_HOST=localhost DB_PORT=3306 DB_DATABASE=laravel DB_USERNAME=root DB_PASSWORD=123456
laravel 操作数据库
建立student控制器，控制器代码
namespace App\Http\Controllers;
use Illuminate\Support\Facades\DB;
class StudentController extends Controller
{
//添加
public function addstudent(){
$student = DB::insert('insert into student(name,age,gender) values(?,?,?)',['张三',12,2]);
var_dump($student);//成功返回bloo值true
}
//获取
public function getall(){
// $student = DB::select('select * from student');
$student = DB::select('select * from student where id>?',[1]);
return $student;//数组
}
//修改
public function updstudent(){
$student = DB::update('update student set age= ? where name=?',[10,'张三']);
var_dump($student);//成功返回bloo值true
}
//修改
public function delstudent(){
$student = DB::delete('delete from student where id=?',[10]);
var_dump($student);
}
}
注意 laravel中return true会报错：
(1/1) UnexpectedValueException
The Response content must be a string or object implementing __toString(), “boolean” given.
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