下面是一些代码:

function object_to_array($data) {
    if ((! is_array($data)) and (! is_object($data)))
        return 'xxx'; // $data;

    $result = array();

    $data = (array) $data;
    foreach ($data as $key => $value) {
        if (is_object($value))
            $value = (array) $value;
        if (is_array($value))
            $result[$key] = object_to_array($value);
        else
            $result[$key] = $value;
    }
    return $result;
}

这不是一个新的解决方案，但是在可用时包含了toArray方法转换

function objectToArray($r)
{
  if (is_object($r)) {
    if (method_exists($r, 'toArray')) {
      return $r->toArray(); // returns result directly
    } else {
      $r = get_object_vars($r);
    }
  }

  if (is_array($r)) {
    $r = array_map(__FUNCTION__, $r); // recursive function call
  }

  return $r;
}

当你从数据库中以对象的形式获取数据时，你可能想这样做:

// Suppose 'result' is the end product from some query $query

$result = $mysqli->query($query);
$result = db_result_to_array($result);

function db_result_to_array($result)
{
    $res_array = array();

    for ($count=0; $row = $result->fetch_assoc(); $count++)
        $res_array[$count] = $row;

    return $res_array;
}

Use:

function readObject($object) {
    $name = get_class ($object);
    $name = str_replace('\\', "\\\\", $name); // Outcomment this line, if you don't use
                                              // class namespaces approach in your project
    $raw = (array)$object;

    $attributes = array();
    foreach ($raw as $attr => $val) {
        $attributes[preg_replace('('.$name.'|\*|)', '', $attr)] = $val;
    }
    return $attributes;
}

它返回一个没有特殊字符和类名的数组。

@SpYk3HH的简短解决方案

function objectToArray($o)
{
    $a = array();
    foreach ($o as $k => $v)
        $a[$k] = (is_array($v) || is_object($v)) ? objectToArray($v): $v;

    return $a;
}

这里发布的所有其他答案都只使用公共属性。下面是一个使用反射和getter处理类javabean对象的解决方案:

function entity2array($entity, $recursionDepth = 2) {
    $result = array();
    $class = new ReflectionClass(get_class($entity));
    foreach ($class->getMethods(ReflectionMethod::IS_PUBLIC) as $method) {
        $methodName = $method->name;
        if (strpos($methodName, "get") === 0 && strlen($methodName) > 3) {
            $propertyName = lcfirst(substr($methodName, 3));
            $value = $method->invoke($entity);

            if (is_object($value)) {
                if ($recursionDepth > 0) {
                    $result[$propertyName] = $this->entity2array($value, $recursionDepth - 1);
                }
                else {
                    $result[$propertyName] = "***";  // Stop recursion
                }
            }
            else {
                $result[$propertyName] = $value;
            }
        }
    }
    return $result;
}