PHP方法链接? [英] PHP method chaining?

问题描述

我正在使用PHP 5，并且听说过面向对象方法中的一个新功能，称为方法链接".究竟是什么?我该如何实施?

I am using PHP 5 and I've heard of a new featured in the object-oriented approach, called 'method chaining'. What is it exactly? How do I implement it?

推荐答案

真的很简单，您有一系列

Its rather simple really, you have a series of mutator methods that all returns the original (or other) objects, that way you can keep calling methods on the returned object.

<?php
class fakeString
{
    private $str;
    function __construct()
    {
        $this->str = "";
    }

    function addA()
    {
        $this->str .= "a";
        return $this;
    }

    function addB()
    {
        $this->str .= "b";
        return $this;
    }

    function getStr()
    {
        return $this->str;
    }
}


$a = new fakeString();


echo $a->addA()->addB()->getStr();

这将输出"ab"

尝试在线！

这篇关于PHP方法链接?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！