CSVのアップロードおよび読み込み(maatwebsite/excel)

composer require "maatwebsite/excel:~2.1.0"

'providers' => [

Maatwebsite\Excel\ExcelServiceProvider::class,

]

...

'aliases' => [

'Excel' => Maatwebsite\Excel\Facades\Excel::class,

]

<form method="POST" action="{{ url('...') }}" enctype="multipart/form-data">
    <input type="file" name="csv">
    <button type="submit">Submit</button>
</form>

use Excel;

...

class CsvController extends Controller

public function readCsv(Request $request) {

        $file = $request->file('file');

        $loadedFile = Excel::load(
                $file->getRealPath()
                ,function($reader){}
                )->get();

        $rows = $loadedFile->toArray();

        foreach ($rows as $row){
            \Log::info('row: ' . var_export($row, true));
        }        
...

}

}

[2018-05-05 10:47:41] local.INFO: row: array (
  'header1' => 'val1-1',
  'header2' => 'val1-2',
)
[2018-05-05 10:47:41] local.INFO: row: array (
  'header1' => 'val2-1',
  'header2' => 'val2-2',
)