Lumen: Auto increment and Reset Transaction_ID Automatically every month - laravel

Question

I trying to generate random transaction_id, with format "2000-yymmm-0000".
I already know how to set the transaction_id, but I have a problem with the auto-increment from "2000-yymm-0000" to "2000-yymm-0001", and reseting automatically to "2000-yymm-0000" at every new month.
I put this logic in different path of controller.
PS: I'm using Lumen 6.0 with Laravel 6.0.
I'm trying to create the increment with:
$number = sprintf('%04d', 0000);
$number++;
but it didn't work.
$year = 2000;
$time = date('ym');
$number = sprintf('%04d', 0000);
$transaction_id = $year . '-' . $time . '-' . $number;
$transaction_data = explode('-', $transaction_id);
$month = date("m", strtotime($transaction_data[0]));
I expect the result to automatically increment every time a new data is stored to the database. But the actual result is transaction_id being having always the same value 2000-yymm-0000.
What am I doing wrong?

Answer 1

I know it's weird to answer my own question, but i already find the solution.
in Models/Order.php
i create a function like this.
public function count()
{
$this->where(transaction_id)->count();
}
after that i call the function from Model/Order.php to OrdersController.php
public function create(Request $request)
{
$year = 2000;
$date = date('ym');
$total_data = $this->table->count();
$number = str_pad($total_data + 1, 4, 0, STR_PAD_LEFT);
$transaction_id = $year . '-' . $date . '-' . $number;
return $this->success('count all transaction id', $t_id);
}