Replace array keys with another value - php

Question

I have an array which looks like this:
[0] => stdClass Object
(
[id] => 152
[type_id] => 5
[name] => test 1
)
[1] => stdClass Object
(
[id] => 153
[type_id] => 8
[name] => test 2
)
[2] => stdClass Object
(
[id] => 154
[type_id] => 13
[name] => test 3
)
Is there any way I can transform it into the array below?
[5] => stdClass Object
(
[id] => 152
[name] => test 1
)
[8] => stdClass Object
(
[id] => 153
[name] => test 2
)
[13] => stdClass Object
(
[id] => 154
[name] => test 3
)
Basically I changed the array key with the type_id value.

Answer 1

You should be able to unset the stdClass's properties as follows:
$newObject = array();
foreach ($oldObject as $object) {
$typeID = $object->type_id;
$newObject[$typeID] = $object;
unset($newObject[$typeID]->type_id);
}
This will iterate through your array of stdClass objects and save the entry into a new array. Afterwards, the property type_id will be deleted.

Answer 2

Pass it into a function that returns a new array:
function convert($arr)
{
$new_arr = array();
for ($i = 0; $i < count($arr); $i++)
{
$id = $arr[$i]['type_id'];
unset($arr[$i]['type_id']);
$new_arr[$id] = $arr[$i];
}
return $new_arr;
}

Answer 3

To replace a value, simply use: http://php.net/manual/en/function.unset.php and to add another value: http://php.net/manual/en/function.array-push.php