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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