How to change array keys according the it's elements

Question

I need to change array value based on specific value. Take a look at this array below :

Array
( 
    [0] => Array
        (
            [id] => 5
            [title] => 
            [nomor] => 1
        )

    [1] => Array
        (
            [id] => 6
            [title] => 
            [nomor] => 2
        )

)

I need to change the array key based on nomor value. How can I do that?

change array key by it's own value? It's look like you want to change key with there own value. better to add your expected output. — Shivendra Singh
– Shivendra Singh, Commented Jul 27, 2019 at 18:28

Michael · Accepted Answer · 2019-07-29 02:25:04Z

4

You can use array_column for that (doc) as:

$arr = array_column($arr, null, "nomor");

Live example

edited Jul 29, 2019 at 2:25

Michael

2,6312 gold badges24 silver badges43 bronze badges

answered Jul 27, 2019 at 18:21

dWinder

11.7k3 gold badges27 silver badges40 bronze badges

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

Comments

Andrew · Accepted Answer · 2019-07-27 18:23:17Z

0

The easiest way is to simply create a new array, loop through your existing one, and save each elements into the new one with the proper key.

foreach($array as $element) {
    $formatted_array[$element['nomor']] = $element;
}

Here is a working fiddle: https://3v4l.org/PlbJ1

Edit: Keep in mind though, if multiple elements have the same value as "nomor", the latest will override the previous one.

Edit 2: Per the other answer, PHP's array_column function seems to do this simpler.

edited Jul 27, 2019 at 18:23

answered Jul 27, 2019 at 18:21

Andrew

8252 gold badges7 silver badges16 bronze badges

2 Comments

dWinder Over a year ago

This answer will work - but this can done with PHP build-in function which I think better practice

Andrew Over a year ago

Yes, your solution is better, I updated. I wasn't aware of array_column. PHP seems to have lots of obscure array functions that I haven't actually seen in action before.

Collectives™ on Stack Overflow

How to change array keys according the it's elements

2 Answers 2

Comments

2 Comments

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

2 Comments

Related