在php中,我可以使一个对象与一个数组类似吗？那我该怎么办？

$obj = new stdClass();
$obj->key1 = 'value1';
$obj->key2 = 'value2';

$array = (array)$obj;

$array = array(
    'key1' => 'value1',
    'key2' => 'value2'
);

$obj = json_decode(json_encode($array));

$obj = new stdClass();
$obj->key1 = 'value1';
$obj->key2 = 'value2';

$array = get_object_vars($obj);

foreach ($array as $key => $value) {
    echo $key . ': ' . $value . PHP_EOL;
}

$obj = new stdClass();
$obj->key1 = 'value1';
$obj->key2 = 'value2';

foreach ($obj as $key => $value) {
    echo $key . ': ' . $value . PHP_EOL;
}