尝试在laravel集合之外访问变量->每个 [英] Trying to access variable outside laravel collection->each

问题描述

我正在尝试访问laravel collection->每个外部的变量，但我得到了..

I am trying to access variable outside laravel collection->each, but I get ..

Undefined variable: headers

这是我的代码:

public function bulkCoding(Request $request) {

    Excel::load($request->file, function($reader) {
        $headers  = $reader->get()->first()->keys();

        // Loop through all sheets
        $reader->each(function($sheet) {
            $headers->each(function ($title) {
                dd($title);
            });
        });
    });

}

推荐答案

您需要使用 use()来 查看全文