Referring to nested arrays and array_merge (php)

Question

In such an array:

$arr = Array (
    [key0] => Array (
        [subkey0] => Array (
            [0] => "value0"
            [1] => "value1"
        )
        [subkey1] => Array (
            [0] => "value0"
            [1] => "value1"
        )
    )
    [key1] => Array (
        [subkey0] => Array (
            [0] => "value0"
            [1] => "value1"
        )
        [subkey1] => Array (
            [0] => "value0"
            [1] => "value1"
        )
    )
)

In order to add $varX to the end of $arr[keyX][subkeyX] as [X] => $varX, I use, inside a loop, the following:

$arr[$key] = array(
    "subkey0" => array_merge((array)$arr[$key]["subkey0"], (array)$var1),
    "subkey1" => array_merge((array)$arr[$key]["subkey1"], (array)$var2)
    ...
)

And I might be working with even more nested arrays, so I was wondering if there was a way for subkey0 to refer to itself, or if I could do something like:

"subkeyX" =>+ (array)$varX

Or use array_merge() in a different way to add $varX to the end of subkeyX as [X] => $varX.

AlucardTheRipper · Accepted Answer · 2013-03-30 01:50:15Z

up vote 3 down vote accepted

I don't know if I understand the question right. But this should work.

foreach ($keys as $key) {
    $arr2[$key]['subkey0'][] = $var1;
    $arr2[$key]['subkey1'][] = $var2;
}

edited Mar 30 at 1:50

answered Mar 30 at 0:14

AlucardTheRipper
1963

	Thanks but it does not seem to work. For instance, check this phpfiddle -- click on run to see the results. – Alex Mar 30 at 1:11
	Sorry, my answer was not clear enough. I edited it. – AlucardTheRipper Mar 30 at 1:54
	Of course, my mistake. Thanks – Alex Mar 30 at 2:18
	+1 great clarity – Rob Apodaca Mar 31 at 16:40

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Referring to nested arrays and array_merge (php)

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