在PHP中的对象上使用json_encode(无论范围如何) [英] Using json_encode on objects in PHP (regardless of scope)

问题描述

我正在尝试将对象列表输出为json，并想知道是否存在一种使对象可用于json_encode的方法吗?我得到的代码看起来像

I'm trying to output lists of objects as json and would like to know if there's a way to make objects usable to json_encode? The code I've got looks something like

$related = $user->getRelatedUsers();
echo json_encode($related);

现在，我只是遍历用户数组，然后将它们分别导出到数组中，以供json_encode用作我可用的json.我已经尝试过使对象可迭代，但是json_encode似乎还是跳过了它们.

Right now, I'm just iterating through the array of users and individually exporting them into arrays for json_encode to turn into usable json for me. I've already tried making the objects iterable, but json_encode just seems to skip them anyway.

edit :这是var_dump();

edit: here's the var_dump();

php > var_dump($a);
object(RedBean_OODBBean)#14 (2) {
  ["properties":"RedBean_OODBBean":private]=>
  array(11) {
    ["id"]=>
    string(5) "17972"
    ["pk_UniversalID"]=>
    string(5) "18830"
    ["UniversalIdentity"]=>
    string(1) "1"
    ["UniversalUserName"]=>
    string(9) "showforce"
    ["UniversalPassword"]=>
    string(32) ""
    ["UniversalDomain"]=>
    string(1) "0"
    ["UniversalCrunchBase"]=>
    string(1) "0"
    ["isApproved"]=>
    string(1) "0"
    ["accountHash"]=>
    string(32) ""
    ["CurrentEvent"]=>
    string(4) "1204"
    ["userType"]=>
    string(7) "company"
  }
  ["__info":"RedBean_OODBBean":private]=>
  array(4) {
    ["type"]=>
    string(4) "user"
    ["sys"]=>
    array(1) {
      ["idfield"]=>
      string(2) "id"
    }
    ["tainted"]=>
    bool(false)
    ["model"]=>
    object(Model_User)#16 (1) {
      ["bean":protected]=>
      *RECURSION*
    }
  }
}

这是json_encode给我的东西:

and here's what json_encode gives me:

php > echo json_encode($a);
{}

我最终就这样了:

    function json_encode_objs($item){   
        if(!is_array($item) && !is_object($item)){   
            return json_encode($item);   
        }else{   
            $pieces = array();   
            foreach($item as $k=>$v){   
                $pieces[] = "\"$k\":".json_encode_objs($v);   
            }   
            return '{'.implode(',',$pieces).'}';   
        }   
    }   

它需要装满这些对象的数组或仅是单个实例，然后将它们转换为json-我使用它而不是json_encode.我敢肯定，有一些地方我可以做得更好，但是我希望json_encode能够根据对象的公开接口检测何时对对象进行迭代.

It takes arrays full of those objects or just single instances and turns them into json - I use it instead of json_encode. I'm sure there are places I could make it better, but I was hoping that json_encode would be able to detect when to iterate through an object based on its exposed interfaces.

推荐答案

在RedBeanPHP 2.0中，有一个mass-export函数，它将整个bean集合变成数组.这适用于JSON编码器.

In RedBeanPHP 2.0 there is a mass-export function which turns an entire collection of beans into arrays. This works with the JSON encoder..

json_encode( R::exportAll( $beans ) );

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