php array of arrays remove array containing matching collection of values

Question

Array
(
  [0] => Array
    (
        [0] => 4937
    )

  [1] => Array
    (
        [0] => 4937
        [1] => 4941
    )

  [2] => Array
    (
        [0] => 4937
        [1] => 5610
    )

  [3] => Array
    (
        [0] => 4937
        [1] => 5610
        [2] => 4943
    )

  [4] => Array
    (
        [0] => 108
    )

)

Each array is a list of categories followed by its sub categories and sub sub categories. I want to show only original patterns of numbers. so I want to remove array 2 because that pattern of numbers already exists in array 3, but I want keep array 1 because the number that follows 4937 is different to array 3. The end result should be this,

Array
(

  [1] => Array
    (
        [0] => 4937
        [1] => 4941
    )

  [3] => Array
    (
        [0] => 4937
        [1] => 5610
        [2] => 4943
    )

  [4] => Array
    (
        [0] => 108
    )

)

what have you tried? Can you show us (code) where you run in to trouble? — lovelace
– lovelace, Commented Oct 10, 2017 at 18:33
What if the last array contained 4943 instead of 108. What should the behavior be? Should that array be removed? — Patrick Q
– Patrick Q, Commented Oct 10, 2017 at 18:57
The original arrays are made from all the categories each item belongs to, I have then requested all the ancestors to each id and added them to the array, so the last array can not contain only 4943 ``` foreach ($product_cat as $cat ) { $simple_cats[] = array ( 'parent_id' => $cat->parent, 'id' => $cat->term_id, 'acestors' => get_ancestors( $cat->term_id, 'product_cat' ) ); } foreach ($simple_cats as &$cat ) { $cat['ids'] = array_reverse( $cat['acestors'] ); array_push($cat['ids'], $cat['id']); $cat_ids[] = $cat['ids']; } ``` — Michael Compton
– Michael Compton, Commented Oct 10, 2017 at 19:18

vstelmakh · Accepted Answer · 2017-10-10 18:44:17Z

2

If you do not have multiple parents for child categories, try this:

for($i = 1; $i < count($array); $i++){
    end($array[$i-1]);
    $k = key($array[$i-1]);
    if ($array[$i-1][$k] == $array[$i][$k]) {
        unset($array[$i-1]);
    }
}
$array = array_values($array); // reindex array if you need

answered Oct 10, 2017 at 18:44

vstelmakh

7921 gold badge13 silver badges21 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

php array of arrays remove array containing matching collection of values

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related