在 Symfony 中输入提示 json 对象 [英] Type hinting json object in Symfony

问题描述

在我的 Symfony 2.3 项目中，我有一个 curl 函数，它从 API 接收 JSON 数据并将此数据作为参数传递给另一个函数.目前，接受 JSON 对象的函数如下所示:

In my Symfony 2.3 project, I have a curl function that receives JSON data from an API and passes this data as a parameter to another function. Currently, the function that accepts the JSON object looks like this:

public function updateCountries($data)
{
    foreach (json_decode($data, true) as $key => $value) {
        (do something)
    }
}

我想向 $data 参数添加一个类型提示，以表明这是一个 JSON 对象，但JSON"类型似乎不存在.有没有有效的类型提示?

I'd like to add a type hint to the $data parameter to indicate that this is a JSON object, but a "JSON" type doesn't seem to exist. Is there a type hint that would work?

推荐答案

PHP 不支持 JSON 作为类型.$data 将作为字符串出现并在您对其调用 json_decode() 时转换为数组.您可以创建一个将 json 字符串作为参数并返回一个数组的方法.然后使用数组输入 hit updateCountries.

PHP doesn't support JSON as a type. $data would come in as a string and be converted to a array when you call json_decode() on it. You can make a method that takes a json string as a argument and returns a array. Then type hit updateCountries with Array.

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