difference in result of count and getSize()

Question

I am preparing the product collection as follows

$visibleProducts = $this->catalogProductVisibility->getVisibleInCatalogIds();
$collection = $this->productCollectionFactory->create();
$collection->addAttributeToFilter(
    'status',
    ['in' => $this->productStatus->getVisibleStatusIds()]
);
$collection->setVisibility($visibleProducts);
$collection->addAttributeToFilter('sku', ['in' => $skus]);
$collection->addStoreFilter();

$collection->addAttributeToSelect(['new', 'name'])
            ->addAttributeToFilter('new', 1)
            ->setPageSize($limit);

$collection->getSize() and count($collection->getItems()) is showing different numbers.

Why is this so?

Answer 1

$collection->getSize()

this will return all the products count, it ignores pagination

whereas

count($collection->getItems())

this will show you the count on current page

Answer 2

$collection->getSize() - getsize return all the products count, it ignores pagination

count($collection->getItems()) - will show you the count on current page