PHP特性:如何解决属性名称冲突? [英] PHP Traits: How to resolve a property name conflict?

问题描述

当类使用两个具有同名属性的特征时，如何解决属性名称冲突?

How to resolve a property name conflict when a class uses two Traits with homonymous properties?

示例:

<?php

trait Video {
    public $name = 'v';
}


trait Audio {

    public $name = 'a';
}


class Media {
    use Audio, Video;
}

$media = new Media();
$media->name;

我尝试用( Video :: name代替Audio )和( Video :: name as name2 )失败了.

I've tried insteadof (Video::name insteadof Audio) and (Video::name as name2) without success.

提前谢谢！

推荐答案

您不能，仅适用于方法.
但是，只有在值相同的情况下，它们才可以使用相同的属性名称:

You can't, its for methods only.
However they may use the same property name only if the value is the same:

trait Video {
  public $name;
  function getName(){
    return 'Video';
  }
}
trait Audio {
  public $name;
  function getName(){
    return 'Audio';
  }
}
class Media {
  use Audio, Video {
    Video::getName insteadof Audio;
  }

  function __construct(){
    $this->name = $this->getName(); // 'Video'
  }
}

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