Laravel 上传excel，读取并写入数据库 （实现自动建表、存记录值

<?php
 
namespace App\Http\Controllers;
 
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Support\Facades\Input;
use Maatwebsite\Excel\Facades\Excel;
 
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\DB;
 
 
class QueryController extends BaseController
{
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;
	public function index(){
 
 
		$file = Input::file('myfile');
		if($file){
//			$realPath = $file
//			$path = $file -> move(app_path().'/storage/uploads');
			$realPath = $file->getRealPath();
			$entension =  $file -> getClientOriginalExtension(); //上传文件的后缀.
			$tabl_name = date('YmdHis').mt_rand(100,999);
			$newName = $tabl_name.'.'.'xls';//$entension;
			$path = $file->move(base_path().'/uploads',$newName);
			$cretae_path = base_path().'/uploads/'.$newName;
 
			//dd($cretae_path);
			//dd($file);
 
			Excel::load($cretae_path, function($reader) use($tabl_name){
				//$data = $reader->all();
 
				//获取excel的第几张表
				$reader = $reader->getSheet(0);
				//获取表中的数据
				$data = $reader->toArray();
 
				$result = $this->create_table($tabl_name,$data);
				dd($result);
 
				//dd($data);
			});
 
		}
 
		return view('query.index');
	}
 
 
	public function create_table($table_name,$arr_field)
	{
 
		$tmp = $table_name;
		$va = $arr_field;
		Schema::create("$tmp", function(Blueprint $table) use ($tmp,$va)
		{
			$fields = $va[0];  //列字段
			//$fileds_count =  0; //列数
			$table->increments('id');//主键
			foreach($fields as $key => $value){
				if($key == 0){
					$table->string($fields[$key]);//->unique(); 唯一
				}else{
					$table->string($fields[$key]);
				}
				//$fileds_count = $fileds_count + 1;
			}
		});
 
		$value_str= array();
		$id = 1;
		foreach($va as $key => $value){
			if($key != 0){
 
				$content = implode(",",$value);
				$content2 = explode(",",$content);
				foreach ( $content2 as $key => $val ) {
					$value_str[] = "'$val'";
				}
				$news = implode(",",$value_str);
				$news = "$id,".$news;
				DB::insert("insert into db_$tmp values ($news)");
				//$value_str = '';
				$value_str= array();
				$id = $id + 1;
			}
		}
		return 1;
	}
 
 
}