関連のない 2 つの PHP オブジェクトを効率的にマージするにはどうすればよいですか?

$obj_merged = (object) array_merge((array) $obj1, (array) $obj2);

$objectA->a;
$objectA->b;
$objectB->c;
$objectB->d;

// Merge the objects
$objectC = (object) array_merge((array) $objectA, (array) $objectB);

// Verify the merged object
echo $objectC->a; // Output: Value of a from objectA
echo $objectC->b; // Output: Value of b from objectA
echo $objectC->c; // Output: Value of c from objectB
echo $objectC->d; // Output: Value of d from objectB