Is it possible to assign keys to array elements in PHP from a value column with less code?

Question

Let\'s assume I have an array of elements, which are arrays themselves, like so:

$array = [
    [\'foo\' => \'ABC\', \'bar\' => \'DEF\'],
    [\'foo\'          


        

Answer 1

Notice array-column can get index as well (third argument):

mixed $index_key = NULL

So just use as:

array_column($array, null, 'foo');

Answer 2

You can also do it with array_reduce

$new_array = array_reduce($array, function($carry, $item) {
    $carry[$item['foo']] = $item;
    return $carry;
}, []);

Answer 3

Here is one liner for your case,

$temp = array_combine(array_column($array, 'foo'), $array);

Working demo.

array_combine — Creates an array by using one array for keys and another for its values
array_column — Return the values from a single column in the input array