Making sure a PHP array has only sequential keys

Question

Is there any way to have an array with items like:

$array[1];
$array[3];
$array[4];

Be turned into an array like this:

$array[1];
$array[2];
$array[3];

So that the array has only sequential numeric keys? Thanks!

do you want to renumber the keys starting at zero? If so, therefromhere's answer is perfect. — Mike Sherov, Jan 31 '10 at 22:16
Well, all the answers will work for starting for zero. If you just want them to be sequential (not starting from 0), none of the answers will work. — Tyler Carter, Jan 31 '10 at 22:17
@Chacha102 You can get an index at one, but it's a pretty hacky solution. — Tyzoid, Aug 21 '13 at 18:43

score 8 · Accepted Answer · answered Jan 31 '10 at 22:13

8

array_values() returns all the values from the input array and indexes numerically the array.

answered Jan 31 '10 at 22:13

John Carter

1

To get a index starting at one, you have to hack around after calling array_values: `$arr = array_unshift($arr, null); unset($arr[0]);` – Tyzoid Aug 21 '13 at 18:43

score 1 · Answer 2 · answered Jan 31 '10 at 22:14

1

You can call array_values() on that array, and it will return a newly indexed array. (This assumes you have a numerically indexed array of course)

answered Jan 31 '10 at 22:14

Dominic Barnes

score 0 · Answer 3 · answered Jan 31 '10 at 22:13

0

$array = array_merge($array, array());

As long as $array has numerical keys, it will reorder them (starting from 0), numerically.

answered Jan 31 '10 at 22:13

Tyler Carter

3 Answers3