$object = (object)[
'id' => 383912,
'name' => "Albus Dumbledore",
'academicrank' => "Professor",
'age' => 135
];
$array = (array)$object; // Convert object to array
ksort($array); // Sort array by keys
$sortedObject = (object)$array; // Convert array back to object
print_r($sortedObject);
/*
run:
stdClass Object
(
[academicrank] => Professor
[age] => 135
[id] => 383912
[name] => Albus Dumbledore
)
*/