sipadu_mbip/app/Exports/CompoundCurrentExport.php

<?php

namespace App\Exports;

use App\Compound;
use Maatwebsite\Excel\Concerns\Exportable;
use Maatwebsite\Excel\Concerns\WithMultipleSheets;

class CompoundCurrentExport implements WithMultipleSheets
{
	use Exportable;

	private $data,$year1,$year2,$end_date;

	public function __construct($data,$year1,$year2,$end_date)
    {
        $this->data = $data;
        $this->year1 = $year1;
        $this->year2 = $year2;
        $this->end_date = $end_date;
    }

    /**
     * @return array
     */
    public function sheets(): array
    {
        $sheets = [];
        $sheets[] = new CompoundCurrentSheet($this->data, $this->year1, $this->year2, $this->end_date);
        return $sheets;
    }
}