php - Proper nested array to JSON formatting for API curl post

Solution:

The elements that show brackets should be arrays of arrays, which makes sense given that "order_items" and "print_locations" can have multiple entries. You will need to nest the arrays a little deeper at those levels, like this:

'order_items'=> array (
    array( // one order item
        'name'=>"Dale Blaney 2016 Design",
        'quantity'=>"1",
        'code'=>"1081389-GSS-FB-2XL-BK",
        'variation_list'=> array (
            'size'=>"2XL",
            'color'=>"Black", 
            'style'=>"5000"
        ),
        'print_locations'=> array (
            array( // one print location
                'location_name'=>"Full Front",
                'location_art'=>"http://somedomain.com/link_to_your_artwork.png",
                'location_preview'=>"http://somedomain.com/link_to_your_preview.png"
            )
        )
    )
)
Copy code

When you get to the actual implementation you will likely need to use some kind of loop on these fields to insert all the "order_items" and "print_locations"

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