How to extract multidimensional associative array to simple numeric array

Question

Here is a code sample

Array
(
    [0] => Array
        (
            [ID] => 1197
        )
    [1] => Array
        (
            [ID] => 1078
        )
)

I want it to convert into simple index array as:

Array( 1197, 1078 )

I know it can be done by iterating each index and assigning into a temp array. I want a one liner syntax like array_filter do in many cases. Is there any built-in function in PHP which do my task in one line, any mix of statement in one line. I don't want to use it in loops.

Possible duplicate of How to Flatten a Multidimensional Array? — Daniel A. Thompson
– Daniel A. Thompson, Commented Jul 18, 2016 at 20:11

rjdown · Accepted Answer · 2016-07-18 20:12:21Z

1

If you are using PHP > 5.5.0, you can use array_column:

$ids = array_column($array, 'ID');

On the linked page, you'll find a substitute for older versions:

if(!function_exists("array_column"))
{

    function array_column($array,$column_name)
    {

        return array_map(function($element) use($column_name){return $element[$column_name];}, $array);

    }

}

answered Jul 18, 2016 at 20:12

rjdown

9,2073 gold badges35 silver badges48 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to extract multidimensional associative array to simple numeric array

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related