复杂的 PHP 对象到 JSON 字符串

Question

我在PHP 中有一个复杂对象，需要对其进行解析以构建 Json 字符串。我发现了很多我在这里和其他网站找到的例子，但没有一个工作。另一个问题是我的主机在 PHP 5.2 上运行，我无法升级。

这是我的var_dump($myObj)的一个例子：

object(Park)[4]
private 'idObj' => string '60304' (length=5)
private 'name' => string 'AlphaSurf' (length=9)
private 'address' => 
object(Address)[6]
  private 'idObj' => string '40304' (length=5)
  private 'street' => string 'Champ de la Vigne' (length=17)
  private 'number' => string '7' (length=1)
  private 'zip' => string '1470' (length=4)
  private 'city' => string 'Estavayer-le-Lac' (length=16)
  private 'country' => 
    object(Country)[8]
      private 'idObj' => string '30039' (length=5)
      private 'name' => string 'Switzerland' (length=11)
      private 'flag' => string 'switzerland.gif' (length=15)
  private 'usState' => null
private 'contactInfo' => 
object(ContactInfo)[7]
  private 'idObj' => string '70304' (length=5)
  private 'phone' => string '' (length=0)
  private 'email' => string '' (length=0)
  private 'emailcode' => null
  private 'confirmed' => string '1' (length=1)
  private 'website' => string 'www.alphasurf.ch' (length=16)
  private 'mobile' => string '' (length=0)
  private 'fax' => string '' (length=0)
  private 'newsletter' => string '0' (length=1)
private 'owner' => 
object(User)[9]
  private 'idObj' => string '50001' (length=5)
  private 'username' => string 'emaborsa' (length=8)
  private 'password' => string '5baa61e4c9b93f3f0682250b6cf8331b7ee68fd8' (length=40)
  private 'type' => string 'ADMIN' (length=5)
  private 'state' => string 'ACTIVE' (length=6)
  private 'ip' => string '' (length=0)
  private 'time' => string '0' (length=1)
  private 'address' => null
  private 'contactInfo' => 
    object(ContactInfo)[11]
      private 'idObj' => string '1' (length=1)
      private 'phone' => null
      private 'email' => string 'info@emaborsa.com' (length=17)
      private 'emailcode' => null
      private 'confirmed' => string '1' (length=1)
      private 'website' => null
      private 'mobile' => null
      private 'fax' => null
      private 'newsletter' => string '1' (length=1)
private 'logo' => string 'Champ de la Vigne 71470' (length=23)
private 'xcoord' => string '46856912' (length=8)
private 'ycoord' => string '6846918' (length=7)
private 'state' => string 'HIDDEN' (length=6)
private 'detail' => 
object(ParkDetail)[10]
  private 'idObj' => string '1' (length=1)
  private 'descriptionIT' => string '' (length=0)
  private 'descriptionEN' => string '' (length=0)
  private 'descriptionDE' => string 'xcxcx' (length=5)
  private 'type' => string '' (length=0)
  private 'kickers' => string '0' (length=1)
  private 'boxes' => string '0' (length=1)
  private 'rails' => string '0' (length=1)
  private 'specials' => string '0' (length=1)
  private 'specialsDescriptionIT' => null
  private 'specialsDescriptionEN' => null
  private 'specialsDescriptionDE' => null
  private 'dimension' => string '0' (length=1)
private 'lastPayment' => null

所有属性都是私有的，但也有公共的 getter 和 setter。

Answer 1

我认为您需要公开私有属性值是一个设计错误。

当然，在某些情况下应该这样做。 正如PHP Object To JSON format 所指出的那样，一种方法是通过反射。

这是一个使用 php ReflectionClass 来实现你想要的简单示例：

function getJson($object)
{
    $result = array();
    $refl = new ReflectionClass($object);
    foreach ($refl->getProperties() as $prop) {
        $prop->setAccessible(true);
        $result[$prop->name] = $prop->getValue($object);
    }
    return json_encode($result);
}

Answer 2

试试这个

public function encodeJSON() 
{    
    foreach ($this as $key => $value) 
    { 
         if($value instanceOf(stdClass)){
             $json->$key = $value->encodeJSON();
         }else
             $json->$key = $value; 
    } 
    return json_encode($json);
}

我正在尝试将私有成员移动到可以由普通json_encode() 写入的新对象，并且在第 6 行中，如果它不是原始类型，我将递归调用它的 foreach 参数

Answer 3

当您运行 PHP toArray 方法，返回一个包含所有属性的数组（不管它们是公共的、私有的还是受保护的）。

例如：

public class Park {

    private $idObj;
    private $address;

    public function toArray() {

        $toArray = array(
            'idObj' => $this->idObj,
            'address' => $this->address->toArray() // Assuming address is an Address object
        );
    }
}

在你所有的类和子类中这样做，然后你就可以使用了：

$park = new Park(/* your values to initialize the object */);
echo json_encode($park->toArray());