Changing array key value in PHP

Question

I have an array like below,

[test] => Array
        (
            [0] => 1
            [1] => 3
            [2] => 5
            [3] => 13
            [4] => 32
            [5] => 51
        )

i need to change this array into like below,

[test] => Array
            (
                [2] => 1
                [4] => 3
                [6] => 5
                [8] => 13
                [10] => 32
                [12] => 51
            )

i need to change the key value. How can i do this?.

Is there any pattern in keys or is this just values?

Achintha Samindika
– Achintha Samindika

2012-12-13 12:53:48 +00:00
Commented Dec 13, 2012 at 12:53 — Achintha Samindika
– Achintha Samindika, Commented Dec 13, 2012 at 12:53

Mark Baker · Accepted Answer · 2012-12-13 12:02:38Z

4

$newArray = array_combine(
    range(2,count($originalArray)*2,2),
    array_values($originalArray)
);

edited Dec 13, 2012 at 12:02

answered Dec 13, 2012 at 11:56

Mark Baker

213k34 gold badges354 silver badges390 bronze badges

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

2 Comments

Imre L Over a year ago

typo: array_keys( not needed, otherwise +1

Mark Baker Over a year ago

True enough, the array_keys() is just overhead: editing to remove it

Ankit Chauhan · Accepted Answer · 2012-12-13 12:06:46Z

0

The array_values() function returns an array containing all the values of an array and also it reset all the keys. you can do it as

$arr = array(0 => 1, 1 => 3, 2 => 5, 3 => 13, 4 => 32, 5 => 51);
$count = 1;
$tempArr = array();
foreach ($arr as $key => $val) {
    $tempArr[$count * 2] = $val;
    $count++;
}
var_dump($tempArr);exit;

Try this code at your side.

answered Dec 13, 2012 at 12:06

Ankit Chauhan

4043 silver badges18 bronze badges

Collectives™ on Stack Overflow

Changing array key value in PHP

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related