Objets PHP Concat
// 1) Copy over the attributes of $obj1 to $obj2:
foreach ( $obj1 as $attr => $value ) {
$obj2->{$attr} = $value;
}
// 2) Cast the objects to arrays, merge those arrays, then cast
// the resulting array back to a stdClass object.
$merged = (object) array_merge((array) $obj1, (array) $obj2);
KostasX