Making sure a PHP array has only sequential keys [duplicate]

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
– Mike Sherov, Commented Jan 31, 2010 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
– Tyler Carter, Commented Jan 31, 2010 at 22:17
@Chacha102 You can get an index at one, but it's a pretty hacky solution. — Tyzoid
– Tyzoid, Commented Aug 21, 2013 at 18:43

John Carter · Accepted Answer · 2010-01-31 22:13:58Z

8

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

answered Jan 31, 2010 at 22:13

John Carter

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1 Comment

To get a index starting at one, you have to hack around after calling array_values: $arr = array_unshift($arr, null); unset($arr[0]);

Dominic Barnes · Accepted Answer · 2010-01-31 22:14:55Z

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, 2010 at 22:14

Dominic Barnes

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Tyler Carter · Accepted Answer · 2010-01-31 22:13:49Z

0

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

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

answered Jan 31, 2010 at 22:13

Tyler Carter

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