object_merge.php

<?php 

$one->one = 1;
$two->two->one = 21;
$two->two->two = 22;
$three->two->one = 31;

$return_obj = object_merge($one, $two, $three);
// returns:
// Array
// (
//     [one] => 1
//     [two] => Array
//         (
//             [one] => 31
//         )
// 
// )

$a_one['one'] = 1;
$a_two['two']['one'] = 21;
$a_two['two']['two'] = 22;
$a_three['two']['one'] = 31;

$return_arr = array_merge($a_one, $a_two, $a_three);
// returns:
// stdClass Object
// (
//     [one] => 1
//     [two] => stdClass Object
//         (
//             [one] => 31
//         )
// 
// )

// just like array_merge, you can pass in as many objects (instead of arrays) as you want
function object_merge()
{
    // so we can pass in any number of parameters
    $params = func_get_args();

    // convert each parameter to an array
    foreach ($params as $key => $value) 
    {
        $params[$key] = (array) $value;
    }

    // do a classic array_merge and cast to an object
    return (object) call_user_func_array(array_merge, $params);
}