Update multidimensional array values with another multidimensional array without using any loop-CodePudding

I have an old array like this:

$oldArray = [
    [
        'id' => 123,
        'name' => 'abc',
    ],
    [
        'id' => 456,
        'name' => 'def',
    ]
];

I have a new array like this:

$newArray = [
    [
        'id' => 456,
        'name' => 'ghi',
    ],
    [
        'id' => 789,
        'name' => 'jkl',
    ],
];

And I want the result like this:

$updatedArray = [
    [
        'id' => 123,
        'name' => 'abc',
    ],
    [
        'id' => 456,
        'name' => 'ghi',
    ],
    [
        'id' => 789,
        'name' => 'jkl',
    ],
];

That should match by id and get me a resultant array.

I want to use only array functions to do the trick.

I have used code like the below but that doesn't work:

$mergedVariants = array_merge($newArray, $oldArray);
$updatedArray = array_unique($mergedVariants);

CodePudding user response：

The arrays $newArray and $oldArray are required with the id as the key. array_column does that. Then array_replace_recursive() can be used.

$old = array_column($oldArray,null,'id');
$new = array_column($newArray,null,'id');
$updatedArray = array_values(array_replace_recursive($old, $new));

Without array_values() the result array has the 'id' as key. array_replace() is also sufficient for this case.

try self: 3v4l.org