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trait 和abstract的区别在哪里、

WBOY
Release： 2016-06-06 20:22:27
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感觉没区别呢，实在没想出来在那种场景下会有区别

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感觉没区别呢，实在没想出来在那种场景下会有区别

无法在一个class上extend多个abstract class，但是你可以use多个trait

abstract class是在类型系统上做文章，trait片段是mixin

类型约束 代码复用
class 是 是
interface 是 否
trait 否 是
Related labels：
oop php object-oriented design patterns
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