如何递归地将 stdClass 转换为我的自定义类？

Question

我有一个 stdClass 类的对象，它包含同一类的其他对象。如何将该对象的所有 stdClasses 重命名为名为“AppCategory”的自定义类？

我发现这个函数可以将对象转换为类，但它不能递归工作:(它只重命名主对象，而不是子对象。

function cast($object, $class) {
    if( !is_object($object) ) 
        throw new InvalidArgumentException('$object must be an object.');
    if( !is_string($class) )
        throw new InvalidArgumentException('$class must be a string.');
    if( !class_exists($class) )
        throw new InvalidArgumentException(sprintf('Unknown class: %s.', $class));
    if( !is_subclass_of($class, get_class($object)) )
        throw new InvalidArgumentException(sprintf(
            '%s is not a descendant of $object class: %s.',
            $class, get_class($object)
        ));

    /**
     * This is a beautifully ugly hack.
     *
     * First, we serialize our object, which turns it into a string, allowing
     * us to muck about with it using standard string manipulation methods.
     *
     * Then, we use preg_replace to change it's defined type to the class
     * we're casting it to, and then serialize the string back into an
     * object.
     */



    logToFile(print_r($x, true), false, $_SERVER['DOCUMENT_ROOT'].'/administrator/components/com_apps/log.php', 'a');



    return unserialize(
        preg_replace(
            '/^O:\d+:"[^"]++"/', 
            'O:'.strlen($class).':"'.$class.'"',
            serialize($object)
        )
    );

Answer 1

可能是这样的：

foreach($object as &$prop) {
    if(is_object($prop)) {
        $prop = cast($prop, $class);
    }
}    

return unserialize(
        preg_replace(
            '/^O:\d+:"[^"]++"/', 
            'O:'.strlen($class).':"'.$class.'"',
            serialize($object)
        )
    );