Lumen快速入门

来源：https://notestore.cn/laravel-...

DB类

use Illuminate\Support\Facades\DB;

读取数据库 0~20 条数据

DB::table("?")->where('字段名', 条件值)->where('字段名',条件值)->where('字段名',条件值)->whereIn('字段名',[1,2])->orderBy('字段名','ASC')->select('字段名1','字段名2','字段名3','字段名4')->groupBy('字段名')->skip(0)->take(20)->get();

添加数据

DB::table('?')->insert(["字段名" => 字段值,"字段名" => 字段值]);

更新数据

DB::table('?')->where(["字段名" => 字段值,"字段名" => 字段值])->update(["字段名" => 字段值,"字段名" => 字段值]);

详情查询

DB::table('？')->where(['字段名' => 字段值,'字段名' => 字段值,'字段名' => 字段值,'字段名' => 字段值])->first(['字段名1','字段名2']);

添加返回id

DB::table('?')->insertGetId(["字段名" => 字段值,"字段名" => 字段值]);

join查询

DB::table('?1')->whereIn('?1.字段名',[值,值])->where([['?1.字段名','<>',值],['?1.字段名','=',字段值],['?1.字段名','=',字段值]])->where(function ($query) {
                $query->where('?2.status','=',字段值)->orWhere('?1.字段名','=','字段值');
            })->where(function ($query) use (变量值) {
              $query->where('?2.字段名','like',变量值. '%')->orWhere('?1.字段名', 'like','%' . 变量值. '%')->orWhere('?3.字段名', 'like',变量值. '%');
          })->leftJoin('?2','?2.字段名', '=', '?1.字段名')->leftJoin('?3','?3.字段名', '=', '?1.字段名')->orderBy('?2.字段名','ASC')->orderBy('?2.字段名','ASC')->orderBy('?3.字段名','ASC')->select('?1.字段名','?2.字段名','?2.字段名','?1.字段名','?1.字段名 as 字段名')->groupBy('?1.字段名')->skip(0)->take(20)
            ->get();

Request类

use Illuminate\Http\Request;

读取 url 中参数

$language = $request->get('language');

Cache类

use Illuminate\Support\Facades\Cache;

检测是否有缓存

Cache::has("缓存名")

获取缓存数据

Cache::get("缓存名");

写入缓存,永久有效

Cache::forever("缓存名","缓存值");

清除缓存

Cache::forget("缓存名");

写入缓存,设置过时时间

Cache::put("缓存名","缓存值",Carbon::parse(date("Y-m-d H:i:s",过时时间戳)));

Crypt类

use Illuminate\Support\Facades\Crypt;

解密

Crypt::decrypt(待解密内容);

加密

Crypt::encrypt(待加密内容);

Carbon类

use Illuminate\Support\Carbon;