Question

I have a multi-dimensional array and what i want is in each second degree of array values limit should be set to 4 only. Like i have a array of type:

Array
(
 [test2] => Array
    (
        [0] => Array
            (
                [application_id] => 405275016
            )
        [1] => Array
            (
                [application_id] => 405275016
            )

        [2] => Array
            (
                [application_id] => 303198288
            )

        [3] => Array
            (
                [application_id] => 303841592
            )

    )

[test3] => Array
    (
        [0] => Array
            (
                [application_id] => 289267216
            )

        [1] => Array
            (
                [application_id] => 303198216
            )

        [2] => Array
            (
                [application_id] => 405275016
            )

        [3] => Array
            (
                [application_id] => 303198288
            )

        [4] => Array
            (
                [application_id] => 303841592
            )

        [5] => Array
            (
                [application_id] => 311430400
            )

        [6] => Array
            (
                [application_id] => 318096216
            )

        [7] => Array
            (
                [application_id] => 320256352
            )
    )

)

and what i want that if the inner arrays value exceed 5 count it should not add any further values to it. i have to format this above array to something like:

Array
(
 [test2] => Array
    (
        [0] => Array
            (
                [application_id] => 405275016
            )
        [1] => Array
            (
                [application_id] => 405275016
            )

        [2] => Array
            (
                [application_id] => 303198288
            )

        [3] => Array
            (
                [application_id] => 303841592
            )

    )

[test3] => Array
    (
        [0] => Array
            (
                [application_id] => 289267216
            )

        [1] => Array
            (
                [application_id] => 303198216
            )

        [2] => Array
            (
                [application_id] => 405275016
            )

        [3] => Array
            (
                [application_id] => 303198288
            )

        [4] => Array
            (
                [application_id] => 303841592
            )
    )

)

here in second array array last 3 arrays were truncated in order to take only 5 count as a value. I have tried many a methods but none achieved this.

Any idea on how can i achieve this will be highly appreciated ??

Answer 1

foreach ($array as $k => $v) { // Loop outer array
  for ($i = 5; isset($array[$k][$i]); $i++) { // Loop inner array, starting at element #5
    unset($array[$k][$i]); // unset all elements >=5
  }
}