how to reduce number of variables PHP - php

Question

My code checks and updates the number of apartments a building has with different bedrooms (1,2,3,4,studio) and calculates their avg min rent price and avg max rent price for particular type of room. How do I reduce the number of variables in this code so its easier to read and work with, if I can do it with arrays and foreach loop how can I use them in this code?
$room_one = $room_two = $room_three = $room_four = $room_studio = 0;
$rentmin_one = $rentmin_two = $rentmin_three = $rentmin_four = $rentmin_studio = 0;
$rentmax_one = $rentmax_two = $rentmax_three = $rentmax_four = $rentmax_studio = 0;
foreach ($nodes as $node) {
$field_bedrooms = "input field value";
$field_rentmin = "input field value";
$field_rentmax = "input field value";
foreach ($field_bedrooms as $field_bedroom) {
if (!is_null($field_bedroom) && !empty($field_bedroom)) {
$bedrooms_nid = $field_bedroom['target_id'];
$bedrooms_vocab = $this->load($bedrooms_nid);
$bedroom_value = $bedrooms_vocab->getName();
if ($bedroom_value == 1) {
$room_one++;
$rentmin_one = $rentmin_one + $field_rentmin;
$rentmax_one = $rentmax_one + $field_rentmax;
}
elseif ($bedroom_value == 2) {
$room_two++;
$rentmin_two = $rentmin_two + $field_rentmin;
$rentmax_two = $rentmax_two + $field_rentmax;
}
elseif ($bedroom_value == 3) {
$room_three++;
$rentmin_three = $rentmin_three + $field_rentmin;
$rentmax_three = $rentmax_three + $field_rentmax;
}
elseif ($bedroom_value == 4 || $bedroom_value == '4+') {
$room_four++;
$rentmin_four = $rentmin_four + $field_rentmin;
$rentmax_four = $rentmax_four + $field_rentmax;
}
elseif ($bedroom_value == 'Studio') {
$room_studio++;
$rentmin_studio = $rentmin_studio + $field_rentmin;
$rentmax_studio = $rentmax_studio + $field_rentmax;
}
}
}
}
$avg_minrent['one'] = !empty($rentmin_one) && !empty($room_one) ? $rentmin_one / $room_one : '';
$avg_maxrent['one'] = !empty($rentmax_one) && !empty($room_one) ? $rentmax_one / $room_one : '';
$avg_minrent['two'] = !empty($rentmin_two) && !empty($room_two) ? $rentmin_two / $room_two : '';
$avg_minrent['three'] = !empty($rentmin_three) && !empty($room_three) ? $rentmin_three / $room_three : '';
$avg_minrent['four'] = !empty($rentmin_four) && !empty($room_four) ? $rentmin_four / $room_four : '';
$avg_minrent['studio'] = !empty($rentmin_studio) && !empty($room_studio) ? $rentmin_studio / $room_studio : '';
$avg_maxrent['two'] = !empty($rentmax_two) && !empty($room_two) ? $rentmax_two / $room_two : '';
$avg_maxrent['three'] = !empty($rentmax_three) && !empty($room_three) ? $rentmax_three / $room_three : '';
$avg_maxrent['four'] = !empty($rentmax_four) && !empty($room_four) ? $rentmax_four / $room_four : '';
$avg_maxrent['studio'] = !empty($rentmax_studio) && !empty($room_studio) ? $rentmax_studio / $room_studio : '';
return [f
$avg_minrent,
$avg_maxrent,
];