use DVDoug\BoxPacker\Packer;
use DVDoug\BoxPacker\Test\TestBox;  // use your own `Box` implementation
use DVDoug\BoxPacker\Test\TestItem; // use your own `Item` implementation

$packer = new Packer();

/*
 * Add choices of box type - in this example the dimensions are passed in directly via constructor,
 * but for real code you would probably pass in objects retrieved from a database instead
 */
$packer->addBox(new TestBox('Le petite box', 300, 300, 10, 10, 296, 296, 8, 1000));
$packer->addBox(new TestBox('Le grande box', 3000, 3000, 100, 100, 2960, 2960, 80, 10000));

/*
 * Add items to be packed - e.g. from shopping cart stored in user session. Again, the dimensional information
 * (and keep-flat requirement) would normally come from a DB
 */
$packer->addItem(new TestItem('Item 1', 250, 250, 12, 200, true), 1); // item, quantity
$packer->addItem(new TestItem('Item 2', 250, 250, 12, 200, true), 2);
$packer->addItem(new TestItem('Item 3', 250, 250, 24, 200, false), 1);

$packedBoxes = $packer->pack();

echo "These items fitted into " . count($packedBoxes) . " box(es)" . PHP_EOL;
foreach ($packedBoxes as $packedBox) {
    $boxType = $packedBox->getBox(); // your own box object, in this case TestBox
    echo "This box is a {$boxType->getReference()}, it is {$boxType->getOuterWidth()}mm wide, {$boxType->getOuterLength()}mm long and {$boxType->getOuterDepth()}mm high" . PHP_EOL;
    echo "The combined weight of this box and the items inside it is {$packedBox->getWeight()}g" . PHP_EOL;

    echo "The items in this box are:" . PHP_EOL;
    $packedItems = $packedBox->getItems();
    foreach ($packedItems as $packedItem) { // $packedItem->getItem() is your own item object, in this case TestItem
        echo $packedItem->getItem()->getDescription() . PHP_EOL;
    }
}`