Remove parent array including the children if the children value found empty - php

Question

I have this array structure.
I'm trying to remove those whole array if I found the [empevalpptwo] empty or null, so if the [empevalpptwo] is empty the whole [4] => Array should be remove.
Right now i'm just trying to get the parent index so I can just remove it by index
Is there any good solution like filtering recursively?
$kra = array_column($ppform_plan->toArray(), 'kra');
$emp_eval_pptwo = array_search('', array_column($kra, 'empevalpptwo'));
//should return 4
Array
(
[4] => Array
(
[id] => 50
[user_id] => 6282
[specific_user_id] => 6281
[eval_cat_id] => 2
[format_cat] => 1
[title] => This istesting
[desc] =>
[weight] => 50
[bsc_weight_group] =>
[bsc_rating] =>
[sequence] =>
[created_at] => 2019-05-22 10:55:23
[updated_at] => 2019-05-22 10:55:23
[kra] => Array
(
[0] => Array
(
[id] => 77
[user_id] => 6282
[bsc_id] => 50
[index] => 0
[kra_title] => ttes lang muna
[kra_desc] =>
[kra_weight] => 25
[sat] => 521
[at] => 4
[ot] => 535
[rating_per_kra] =>
[rating_per_kra_cat] =>
[net_weighting] => 5
[rank] => 1
[remarks] =>
[indicator_text] =>
[created_at] =>
[updated_at] =>
[empevalpptwo] =>
)
[1] => Array
(
[id] => 78
[user_id] => 6282
[bsc_id] => 50
[index] => 1
[kra_title] => talga e2 pa o
[kra_desc] =>
[kra_weight] => 25
[sat] => 5
[at] => 2
[ot] => 4
[rating_per_kra] =>
[rating_per_kra_cat] =>
[net_weighting] => 4
[rank] => 2
[remarks] =>
[indicator_text] =>
[created_at] =>
[updated_at] =>
[empevalpptwo] =>
)
)
)
)

Answer 1

Something akin to:
<?php
$items =
[
1 =>
[
'foo'=>
[
[
'bar' => '',
],
[
'bar' => '',
]
]
],
2 =>
[
'foo'=>
[
[
'bar' => 'baz'
]
]
]
];
foreach ($items as $k => $item)
if(empty(array_filter(array_column($item['foo'], 'bar'))))
unset($items[$k]);
var_export($items);
Output:
array (
2 =>
array (
'foo' =>
array (
0 =>
array (
'bar' => 'baz',
),
),
),
)

Answer 2

You should try this :
$data = array_map('array_filter', $data);
$data = array_filter($data);
UPDATED
and for checking inner values you can use this :
$array = array_filter($array, function($v) { return !empty($v['empevalpptwo']); });
Orginal
Array
(
[con] => Array
(
[address] => Array
(
[city] => ahmedabad
)
[personalinfo] =>
)
)
Result :
Array
(
[con] => Array
(
[address] => Array
(
[city] => ahmedabad
)
)
)