Delete an array element based on value from nested array

Question

I have try to remove whole parent array using PHP unset(key) function based on value from a nested array in it.

Nested array looks like

Array ( 
[0] => Array ( 
    [ID] => 9909 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 49.97 
    [ITEMS_AMOUNT] => 44.97 
    [ITEMS] => Array ( 
        [0] => Array ( 
            [CODE] => TEST
            [QTY] => 1 
            [UNIT_PRICE] => 14.99 ) 
        [1] => Array ( 
            [CODE] => NNKIT 
            [QTY] => 1 
            [UNIT_PRICE] => 9.99 ) 
        [2] => Array ( 
            [CODE] => MAINKIT 
            [QTY] => 1 
            [UNIT_PRICE] => 19.99 )
        ) 
    ) 
[1] => Array ( 
    [ID] => 9910 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 74.96 
    [ITEMS_AMOUNT] => 69.96 
    [ITEMS] => Array ( 
        [0] => Array ( 
            [CODE] => NNKIT 
            [QTY] => 1 
            [UNIT_PRICE] => 9.99 ) 
        [1] => Array ( 
            [CODE] => MAINKIT 
            [QTY] => 3 
            [UNIT_PRICE] => 19.99 ) 
        ) 
    ) 
[2] => Array ( 
    [ID] => 9911 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 44.98 
    [ITEMS_AMOUNT] => 39.98 
    [ITEMS] => Array ( 
        [0] => Array ( 
            [CODE] => MAINKIT 
            [QTY] => 2 
            [UNIT_PRICE] => 19.99 ) 
        ) 
    ) 
[3] => Array ( 
    [ID] => 9912 
    [SHIPPING_AMOUNT] => 5 
    [TOTAL_TAX] => 0 
    [GRAND_AMOUNT] => 29.98 
    [ITEMS_AMOUNT] => 24.98 
    [ITEMS] => Array ( 
        [0] => Array ( 
            [CODE] => TEST
            [QTY] => 1 
            [UNIT_PRICE] => 14.99 ) 
        [1] => Array ( 
            [CODE] => NEWTEST
            [QTY] => 1 
            [UNIT_PRICE] => 9.99 )
        )
    ) 

and value which I check for is CODE = MAINKIT. If not exists in a nested array then main array should be removed (in this case parent array[3]) but somehow returned key is from nested array not a parent one.

PHP code:

foreach($array as $key => $value){
    if(is_array($value) && $value['CODE'] != 'MAINKIT')
          unset($key);
}

Answer 1

The CODE elements are inside the $value['ITEMS'] array, not directly in $value.

To tell whether MAINKIT isn't in any of the items, you have to loop through all the items, testing whether any of them matches. If none do, then delete the array element.

Try:

foreach($array as $key => $value){
    if (is_array($value) && is_array($value['ITEMS']))
        $found_mainkit = false;
        foreach ($value['ITEMS'] as $item) {
            if($item['CODE'] == 'MAINKIT') {
                $found_mainkit = true;
                break;
            }
        }
        if (!$found_mainkit) {
            unset($array[$key]);
        }
    }
}