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phparraysarray-merge

php merge 'subsets' of array in loop

I'm struggling merging subsets of an array in a loop.

I have a big array that can contain any amount of $data records (depending on the API results)

When I try to merge just 2 'products' subsets this works just fine:

$merged=array_merge($data[0][products], $data[1][products]);

But since I don't know in advance how many $data records I will end up with I decided to do it in a loop, something like this:

foreach ($data as $products) {
$merged=array_merge($merged,$products[products]);
}

This doesn't work, I've been playing around with this for a couple of hours, but haven't been able to get it to work.

Solution

  • This is an ideal situation to use call_user_func_array in combination with array_column:

    $merged = call_user_func_array('array_merge', array_column($data, 'products'));