Unset elements from a multidimensional array - php

Question

I am trying to unset/remove some elements from a multidimeansional usign the below code but i cant figure it out how.
My array looks like (only two elements from my multidimensional array)
[3] => stdClass Object
(
[processId] => H7-99440469
[hotelCode] => TR4SWV
[availabilityStatus] => InstantConfirmation
[totalPrice] => 36
[totalTax] => 0
[totalSalePrice] => 0
[currency] => EUR
[boardType] => All Inclusive
[rooms] => Array
(
[0] => stdClass Object
(
[roomCategory] => Double Promotional
[paxes] => Array
(
[0] => stdClass Object
(
[paxType] => Adult
[age] => 30
)
[1] => stdClass Object
(
[paxType] => Adult
[age] => 30
)
)
[totalRoomRate] => 36
[ratesPerNight] => Array
(
[0] => stdClass Object
(
[date] => 2015-05-01
[amount] => 36
)
)
)
)
)
[4] => stdClass Object
(
[processId] => HH-46795719
[hotelCode] => TRIIFY
[availabilityStatus] => InstantConfirmation
[specialDeal] => 11
[totalPrice] => 38
[totalTax] => 0
[totalSalePrice] => 0
[currency] => EUR
[boardType] => All Inc.
[rooms] => Array
(
[0] => stdClass Object
(
[roomCategory] => Double Room
[paxes] => Array
(
[0] => stdClass Object
(
[paxType] => Adult
[age] => 30
)
[1] => stdClass Object
(
[paxType] => Adult
[age] => 30
)
)
[totalRoomRate] => 38
[ratesPerNight] => Array
(
[0] => stdClass Object
(
[date] => 2015-05-01
[amount] => 38
)
)
)
)
)
How can i remove all the elemets that dont have [specialDeal] => 11 ? [specialDeal] => 11 is the Early booking discount

Answer 1

for($i=0;$i<count($array);$i++) {
if (!(isset($array[$i]->specialDeal) && $array[$i]->specialDeal] === 11)) {
unset($array[$i]);
}
}

Answer 2

$otherspecialoffer = array();
foreach( $availHotels as $key=>$item ) {
if (!(isset($item->specialDeal) && $item->specialDeal === 11)) {
unset($availHotels[$key]);
} else {
$otherspecialoffer[$item->specialDeal] = $key;
}
}