我在网格中有超过8k条记录，当我发布它们并使用如下所示的插入代码运行循环时，要插入超过10分钟的薄荷糖

            for($i=0; $i< count($emp_code); $i++)
            {
                $objLabor = new Labor;
                $objLabor->project_id = $project_id;
                $objLabor->emp_code = $emp_code[$i];
                $objLabor->emp_name = $emp_name[$i];
                $objLabor->emp_profession = $emp_profession[$i];
                if($salary_date[$i] != "")  $objLabor->salary_date =  date("Y-m-d H:i:s",strtotime($salary_date[$i] ));
                if($salary_period_from[$i] != "")   $objLabor->salary_period_from = date("Y-m-d H:i:s",strtotime($salary_period_from[$i]));
                if($salary_period_to[$i] != "") $objLabor->salary_period_to = date("Y-m-d H:i:s",strtotime($salary_period_to[$i]));
                $objLabor->quantity = $quantity[$i];
                $objLabor->uom = $uom_id[$i];
                if($rate[$i] != "") $objLabor->rate = AppHelper::instance()->formatCurrency($rate[$i]);
                $objLabor->basic_amount = $quantity[$i] * doubleval($objLabor->rate);
                if($allowance[$i] != "") $objLabor->allowance = AppHelper::instance()->formatCurrency($allowance[$i]);
                if($deduction[$i] != "") $objLabor->deduction = AppHelper::instance()->formatCurrency($deduction[$i]);
                if($overtime[$i] != "") $objLabor->overtime = AppHelper::instance()->formatCurrency($overtime[$i]);
                $addUp = doubleval($objLabor->basic_amount) + doubleval($objLabor->allowance) + doubleval($objLabor->overtime);
                $objLabor->net_amount = $addUp - doubleval($objLabor->deduction);
                $objLabor->budget_node_id = $budget_code[$i];
                $objLabor->remarks = $remarks[$i];
                $objLabor->budget_node_remarks = $budget_code_remarks[$i];
                $objLabor->added_by = Auth::id();
                $objLabor->added_on = date("Y-m-d H:i:s");  
                $objLabor->batch_id = $objBulkImportHistory->id;    
                $objLabor->save();
            }

但是当我使它插入查询时，它会在几秒钟内执行

for($i=0; $i< count($emp_code); $i++)
{
DB::query('insert into labor (project_id,emp_code,emp_name,emp_profession,added_by,batch_id,added_on) 
                values (' . $project_id . ',' . $emp_code[$i] . ',' .  $emp_name[$i]. ',' .  $emp_profession[$i]
                . ',' .  $user_id . ',' .  $bulk_id .   ',' . date("Y-m-d H:i:s") .')');
}

这是我的模特

namespace a2zcost;

use Illuminate\Database\Eloquent\Model;

class Labor extends Model
{
    protected $table = 'labor';
    public $timestamps = false;

}

可能是什么问题？我想念的还是做的不好？