array_merge在2个不同的实体集合上，按公共属性对它们进行排序

Question

I have 2 entities, Invoice and Advance. Each have a "paidAt" property.

In a controller, I fetch both Invoice and Advance within a date range. Then, I merge them into 1 single array and push it into my view, where I display them in a list.

Before pushing them to my view, I would like to sort them using the "paidAt" property. I found some multi-dimensional sorts functions on PHP doc, but all make use of php native function array_multisort()

So Symfony throws me an error : Cannot use object of type Entity\Invoice as array

Is there anyway to do what I'm looking for ?

Answer 1

If you have getters getPaidAt() in both entities you can use for ascending order

usort(
    $collection,
    function($a, $b) {
        if ($a->getPaidAt() === $b->getPaidAt()) {
            return 0;
        }

        return ($a->getPaidAt() < $b->getPaidAt())? -1 : 1;
    }
);

If you want to sort descending, just replace < by >.