Question

So here’s my code:

Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 [6] => 6 [7] => 7 [8] => 8 [23] => 23 [24] => 24 )

It’s missing some keys and I’d like to split this array in two based on those missing keys and then display the highest and lowest keys from those two arrays…

EX: 0-8 & 23-24

Help!

Answer 1

this code may be solve your problems:

$arr = array("1" => "1", "2" => "2", "4" => "4", "5" => "5", "8" => "8", "9" => "9", "10" => "10", "11" => "11", "12" => "12", "16" => "16");
$arr_result = array();

$arr_keys = array_keys($arr);

$start = intval($arr_keys[0]);
$end = intval($arr_keys[count($arr_keys)-1]);

$group_idx = 0;

$idx = $start;
foreach($arr_keys as $x => $key) {
    if (intval($key) == intval($idx)) {
        $arr_result[$group_idx][$key] = $arr[$key];
        $idx++;
    } else {
        $group_idx++;
        $arr_result[$group_idx][$key] = $arr[$key];
        $idx = intval($key) + 1;
    }

}

print_r($arr_result);

i tested it, and run perfectly like your request :). And the result is:

Array
(
    [0] => Array
        (
            [1] => 1
            [2] => 2
        )

    [1] => Array
        (
            [4] => 4
            [5] => 5
        )

    [2] => Array
        (
            [8] => 8
            [9] => 9
            [10] => 10
            [11] => 11
            [12] => 12
        )

    [3] => Array
        (
            [16] => 16
        )

)