Wrong numeric key when using php array_merge_recursive

Question

I am trying to recursively merge two arrays using array_replace_recursive. This is the code:

$col = array();
$new = array_merge_recursive($col, array('table1' => array(1 => true)));
$new = array_merge_recursive($new, array('table1' => array(0 => false)));

The dump of the $new array is

array(1) { ["table1"]=> array(2) { [1]=> bool(true) [2]=> bool(false) } }

What i need is to preserve the numeric keys of the "table1" array. The expected result should be

array(1) { ["table1"]=> array(2) { [0]=> bool(false) [1]=> bool(true) } }

Does anyone have a solution for this?

Use array_replace_recursive instead of array_merge_recursive. — Think Different
– Think Different, Commented Dec 3, 2014 at 13:14
Thanks. This seems to work. Please, submit an answer to confirm. @ThinkDifferent — Mihai Gabriel Zamfir
– Mihai Gabriel Zamfir, Commented Dec 3, 2014 at 13:37

Think Different · Accepted Answer · 2014-12-03 13:50:42Z

1

Use array_replace_recursive instead of array_merge_recursive.

answered Dec 3, 2014 at 13:50

Think Different

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Comments

Machavity · Accepted Answer · 2014-12-03 13:13:07Z

0

You could switch the order of your arguments

$new = array_merge_recursive(array(), array('table1' => array(0 => false)));
$new = array_merge_recursive($new, array('table1' => array(1 => true)));

The problem you're running into is you already created a key so subsequent calls will append to the first element of the array.

answered Dec 3, 2014 at 13:13

Machavity♦

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1 Comment

Mihai Gabriel Zamfir Over a year ago

Thanks for the answer. This works too, only that i am doing more than two merges with stored keys and it would imply sorting first, when array_replace_recursive does it without sorting

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