什么时候应该使用stdClass，什么时候应该在php oo代码中使用数组? [英] When should I use stdClass and when should I use an array in php oo code?

问题描述

在工作中进行大量重构的中间，我希望引入stdClass *****作为从函数返回数据的一种方式，并且我试图找到非主观论据来支持我的决定. /p>

在任何情况下，最好使用一种而不是另一种吗?

使用stdClass代替数组有什么好处?

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有人会说，函数必须尽可能少且特定，才能返回一个值.我决定使用stdClass是暂时的，因为从长远来看，我希望为每个进程找到正确的值对象.

解决方案

通常的方法是

• 在返回带有固定分支的已定义数据结构时使用对象:

   $person
     -> name = "John"
     -> surname = "Miller"
     -> address = "123 Fake St"
  

• 返回列表时使用数组:

    "John Miller"
    "Peter Miller"
    "Josh Swanson"
    "Harry Miller"
  

• 返回结构化信息列表时，使用对象数组:

    $person[0]
      -> name = "John"
      -> surname = "Miller"
      -> address = "123 Fake St"
  
    $person[1]
      -> name = "Peter"
      -> surname = "Miller"
      -> address = "345 High St"
  

对象不适合保存数据列表，因为您始终需要一个密钥才能对其进行寻址.数组可以同时实现两个功能-容纳任意列表和数据结构.

因此，如果需要，可以将对象的关联数组用于第一个和第三个示例.我会说，这实际上只是样式和偏好的问题.

@Deceze在何时使用对象方面有很多好处(验证，类型检查和将来的方法).

In the middle of a period of big refactorings at work, I wish to introduce stdClass ***** as a way to return data from functions and I'm trying to find non-subjectives arguments to support my decision.

Are there any situations when would it be best to use one instead of the other ??

What benefits would I get to use stdClass instead of arrays ??

---

Some would say that functions have to be as little and specific to be able to return one single value. My decision to use stdClass is temporal, as I hope to find the right Value Objects for each process on the long run.

解决方案

The usual approach is

• Use objects when returning a defined data structure with fixed branches:

   $person
     -> name = "John"
     -> surname = "Miller"
     -> address = "123 Fake St"
  

• Use arrays when returning a list:

    "John Miller"
    "Peter Miller"
    "Josh Swanson"
    "Harry Miller"
  

• Use an array of objects when returning a list of structured information:

    $person[0]
      -> name = "John"
      -> surname = "Miller"
      -> address = "123 Fake St"
  
    $person[1]
      -> name = "Peter"
      -> surname = "Miller"
      -> address = "345 High St"
  

Objects are not suitable to hold lists of data, because you always need a key to address them. Arrays can fulfill both functions - hold arbitrary lists, and a data structure.

Therefore, you can use associative arrays over objects for the first and third examples if you want to. I'd say that's really just a question of style and preference.

@Deceze makes a number of good points on when to use an object (Validation, type checking and future methods).

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