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@ 2019-12-20T08:16:18Z

<?php

$products = array (
    0 => 
    array (
        'product_id' => 2,
        'customer_id' => 1820,
        'order_id' => 'M-AAH-959',
        'quantity' => 5,
        'weight' => 1.3,
        'cubic' => 0.00267,
        'total_weight' => 6.5,
        'total_cubic' => 0.00267
    ),
    1 => 
    array (
        'product_id' => 3,
        'customer_id' => 1820,
        'order_id' => 'M-AAH-959',
        'quantity' => 6,
        'weight' => 1.5,
        'cubic' => 0.00348,
        'total_weight' => 9,
        'total_cubic' => 0.00348
    ),
    2 => 
    array (
        'product_id' => 8,
        'customer_id' => 1820,
        'order_id' => 'M-AAH-959',
        'quantity' => 7,
        'weight' => 1.5,
        'cubic' => 0.00267,
        'total_weight' => 10.5,
        'total_cubic' => 0.00267
    )
);

function pack_boxes($products, $box_weight) {
    $boxes = array();
    $this_box_weight = 0;
    $box_number = 0;
    foreach ($products as $product) {
        // will all this product fit?
        if ($product['total_weight'] < $box_weight - $this_box_weight) {
            // yes - add this product to the box
            $boxes[$box_number][] = $product;
            $this_box_weight += $product['total_weight'];
            $boxes[$box_number]['box_weight'] = $this_box_weight;
        }
        else {
            // no - add the part that will fit to this box
            $num_products = floor(($box_weight - $this_box_weight) / $product['weight']);
            $balance = $product['quantity'] - $num_products;
            $product['quantity'] = $num_products;
            $product['total_weight'] = $num_products * $product['weight'];
            $boxes[$box_number][] = $product;
            $boxes[$box_number]['box_weight'] = $this_box_weight + $num_products * $product['weight'];
            // add the balance to a new box
            $box_number++;
            $product['quantity'] = $balance;
            $this_box_weight = $product['total_weight'] = $balance * $product['weight'];
            $boxes[$box_number][] = $product;
            $boxes[$box_number]['box_weight'] = $this_box_weight;
        }
    }
    return $boxes;
}

$boxes = pack_boxes($products, 12);
print_r(array_column($boxes, 'box_weight'));
print_r($boxes);

Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: Array ( [0] => 11 [1] => 12 [2] => 3 ) Array ( [0] => Array ( [0] => Array ( [product_id] => 2 [customer_id] => 1820 [order_id] => M-AAH-959 [quantity] => 5 [weight] => 1.3 [cubic] => 0.00267 [total_weight] => 6.5 [total_cubic] => 0.00267 ) [box_weight] => 11 [1] => Array ( [product_id] => 3 [customer_id] => 1820 [order_id] => M-AAH-959 [quantity] => 3 [weight] => 1.5 [cubic] => 0.00348 [total_weight] => 4.5 [total_cubic] => 0.00348 ) ) [1] => Array ( [0] => Array ( [product_id] => 3 [customer_id] => 1820 [order_id] => M-AAH-959 [quantity] => 3 [weight] => 1.5 [cubic] => 0.00348 [total_weight] => 4.5 [total_cubic] => 0.00348 ) [box_weight] => 12 [1] => Array ( [product_id] => 8 [customer_id] => 1820 [order_id] => M-AAH-959 [quantity] => 5 [weight] => 1.5 [cubic] => 0.00267 [total_weight] => 7.5 [total_cubic] => 0.00267 ) ) [2] => Array ( [0] => Array ( [product_id] => 8 [customer_id] => 1820 [order_id] => M-AAH-959 [quantity] => 2 [weight] => 1.5 [cubic] => 0.00267 [total_weight] => 3 [total_cubic] => 0.00267 ) [box_weight] => 3 ) )
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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