Laravel: Using external variable after processing data? - php

Question

I have a function getUnfilledOrders where I get Orders from the database and then use chunk to have them go to checkStatus 10 at a time. If I have 100 orders, the flow I believe would happen is checkStatus get will get called 10 times (since there are 100 orders).
Now once that completes, I want to have access to $totalOrders in getUnfulfilledOrders. Is this possible?
protected function getUnfulfilledOrders()
{
Order::where('order_status', '!=', true)
->where('tracking_number', '!=', null)
->limit(3000)
->chunk(10, function ($unfulfilledOrders) {
$this->checkStatus($unfulfilledOrders);
});
// how to do something now with $totalOrders once ALL Orders are processed 10 at a time;
}
protected function checkStatus($unfilledOrders)
{
$totalOrders = array();
foreach ($unfulfilledOrders as $unfulfilledOrder) {
// logic here
array_push($totalOrders, $unfulFilledOrder->id);
}
}

Answer 1

Like this:
protected function getUnfulfilledOrders()
{
$totalOrders = [];
Order::where('order_status', '!=', true)
->where('tracking_number', '!=', null)
->limit(3000)
// Add use (&$totalOrders)
->chunk(10, function ($unfulfilledOrders) use (&$totalOrders) {
$totalOrders = array_merge($totalOrders, $this->checkStatus($unfulfilledOrders));
});
// how to do something now with $totalOrders once ALL Orders are processed 10 at a time;
}
protected function checkStatus($unfilledOrders)
{
$totalOrders = array();
foreach ($unfulfilledOrders as $unfulfilledOrder) {
// logic here
array_push($totalOrders, $unfilledOrder->id);
}
// Return the generated array
return $totalOrders;
}
Here I initiated an empty array at the start of getUnfulfilledOrders() and merged anything returned by checkStatus() into it.
More on use ($var)
More on passing by reference (&$var)