PHP 常量约定

发布于 2024-11-08 03:46:18 字数 507 浏览 1 评论 0原文

问候 StackOverflow

我正在做一些内部清理，并想在重构我的类时询问一些 PHP 中的建议实践。特别是，我有一些属于类别的类常量，我想知道一些对具有共同目的的常量进行分组的好方法。

一个例子：

class MySquare {
  // Colors
  const COLOR_GREEN = "green";
  const COLOR_RED = "red";

  // Widths
  const WIDTH_SMALL = 100;
  const WIDTH_MEDIUM = 500;
  const WIDTH_BIG = 1000;

  // Heights
  const HEIGHT_SMALL = 100;
  const HEIGHT_MEDIUM = 300;
  const HEIGHT_BIG = 500;
}

显然这是可行的，但是在对相关常量进行分组时似乎有很多选择，我敢打赌这比大多数选项都要差。你会怎么做？

原文

Greetings StackOverflow

I'm doing some house cleaning and thought I would ask for some suggested practices in PHP as I re-factor my classes. In particular, I have some class constants which fall into categories and I would like to know some good ways to group the ones which share a common purpose.

An Example:

class MySquare {
  // Colors
  const COLOR_GREEN = "green";
  const COLOR_RED = "red";

  // Widths
  const WIDTH_SMALL = 100;
  const WIDTH_MEDIUM = 500;
  const WIDTH_BIG = 1000;

  // Heights
  const HEIGHT_SMALL = 100;
  const HEIGHT_MEDIUM = 300;
  const HEIGHT_BIG = 500;
}

Obviously this works, but it seems like there are probably plenty of options when it comes to grouping related constants, and I bet this is inferior to most. How would you do it?

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明天过后 2024-11-15 03:46:18

PHP 约定有很多，而且全都互相矛盾。但我确实使用了类似的符号，尽管我喜欢将每个类的常量分组，所以我会有一个类
具有常量的高度（或 MySquare_Height）。这样，我可以将它用作一种枚举，就像在其他语言中一样。特别是当您使用带有突出显示功能的编辑器时。

<?
abstract class MySquare_Color
{
  const GREEN = 'Green';
  const RED = 'Red';
}

abstract class MySquare_Height 
{
  const SMALL = 100;
  const MEDIUM = 300;
  const BIG = 500;
}

如果您使用 PHP 5.3，则只需将类命名为 Color 和 Height 并将它们放入 MySquare 命名空间中：

<?php
// Namespace MySquare with subnamespace Width containing the constants.
namespace MySquare\Width
{
    const SMALL = 100;
    const MEDIUM = 300;
}

namespace
{
  // Refer to it fromout another namespace
  echo MySquare\Width\SMALL;
}


?>

There are many PHP Conventions, and all of them contradict. But I do use a similar notation, although I like to group the constants per class, so I would have a class
Height (or MySquare_Height) which has the constants. This way, I can use it as a kind of Enum like you got in other languages. Especially when you use an editor with highlighting.

<?
abstract class MySquare_Color
{
  const GREEN = 'Green';
  const RED = 'Red';
}

abstract class MySquare_Height 
{
  const SMALL = 100;
  const MEDIUM = 300;
  const BIG = 500;
}

If you'r using PHP 5.3, you can just name the classes Color and Height and put them in a MySquare namespace:

<?php
// Namespace MySquare with subnamespace Width containing the constants.
namespace MySquare\Width
{
    const SMALL = 100;
    const MEDIUM = 300;
}

namespace
{
  // Refer to it fromout another namespace
  echo MySquare\Width\SMALL;
}


?>

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夜空下最亮的亮点 2024-11-15 03:46:18

作为变体，您可以创建一些接口，在其中可以定义常量。更多代码，但是...分组:)

interface IColorsConstants
{
    const COLOR_GREEN = "green";
    const COLOR_RED = "red";
}

interface IWidths
{
    const WIDTH_SMALL = 100;
    const WIDTH_MEDIUM = 500;
    const WIDTH_BIG = 1000;
}

interface IHeights
{
    const HEIGHT_SMALL = 100;
    const HEIGHT_MEDIUM = 300;
    const HEIGHT_BIG = 500;
}

class MySquare implements IColorsConstants, IHeights, IWidths
{

}

As variant, you can create some interfaces, where you can define constants. More code, but... grouped :)

interface IColorsConstants
{
    const COLOR_GREEN = "green";
    const COLOR_RED = "red";
}

interface IWidths
{
    const WIDTH_SMALL = 100;
    const WIDTH_MEDIUM = 500;
    const WIDTH_BIG = 1000;
}

interface IHeights
{
    const HEIGHT_SMALL = 100;
    const HEIGHT_MEDIUM = 300;
    const HEIGHT_BIG = 500;
}

class MySquare implements IColorsConstants, IHeights, IWidths
{

}

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