php array last index

Question

Possible Duplicate:
How to get last key in an array?

I have an array

$arr=Array
  (
   [0] = Array
       (
           [groupid] = 1
           [groupname] = Oxy
           [members] = Array
               (
                   [0] = Array
                       (
                           [id] = 9
                           [name] =&gt; Anith
                       )

                   [1] = Array
                       (
                           [id] = 12
                           [name] = sanjay
                       )

                   [3] =Array
                       (
                           [id] = 13
                           [name] = Sooraj K
                       )

               )

       ) )

Here $arr[0]['members'][2] is unsetted. I want to find the last index of $arr[0]['members'] here that is 3..how can i find this last index

What do you mean by last index ??? can you add your expected output — Baba, Dec 07 '12 at 09:41

score 4 · Answer 1 · answered Dec 07 '12 at 09:42

4

$last = end($arr[0]['members']);

answered Dec 07 '12 at 09:42

deyes

637
6
9

`end()` returns value, not key. – biakaveron Dec 07 '12 at 09:49
It returns the last element in an array. http://us.php.net/manual/en/function.end.php – deyes Dec 07 '12 at 09:51
Yep, and it will be an array(id, name), while Sanu Saji requires key value (3). – biakaveron Dec 07 '12 at 09:52
SHOWS AN ERROR Unsupported operand types – Sanu Saji Dec 07 '12 at 09:57
$key = key(array_reverse($arr['0']['members'], true)); – deyes Dec 07 '12 at 10:06
The code directly above works. – deyes Dec 07 '12 at 16:30

score 1 · Answer 2 · answered Dec 07 '12 at 10:46

1

This will work for you.

end($arr[0]["members"]);
$key = key($arr[0]["members"]);

It will return you 3.

answered Dec 07 '12 at 10:46

anuj arora

831
12
22

can you provide the code you just applied. and also the array. – anuj arora Dec 07 '12 at 11:05
i tried the above code with your given array, the --$key-- gives me the answer. – anuj arora Dec 07 '12 at 11:09

score -1 · Answer 3 · answered Dec 07 '12 at 09:59

You can simply count the array, i.e

$count = count($arr[0]['members']);

This will give total number of index. Then to fetch it, you can go like

$last_array = $arr[0]['members'][$count-1];

I also suggest to also check that it is greater that 0 or not.

score -2 · Answer 4 · answered Dec 07 '12 at 09:45

-2

Do like :

<?php

$arr_keys = array_keys($arr[0]['members']);
$last_index = $arr_keys[count($arr_keys)-1];

?>

answered Dec 07 '12 at 09:45

Sandip Makwana

57
4

`$last_index = end($arr_keys);`? – biakaveron Dec 07 '12 at 09:51

score -2 · Answer 5 · answered Dec 07 '12 at 09:47

-2

$last = max(array_keys($arr[0]['members']));

Of course, this means sorted array.

answered Dec 07 '12 at 09:47

biakaveron

5,493
1
16
20

and contiguous, and with a base of 1 (while PHP uses a default of 0) – symcbean Dec 07 '12 at 09:49

php array last index

5 Answers5