PHP的魔术方法__call子类 [英] PHP's magic method __call on subclasses

问题描述

我的情况最好用一些代码来描述:

My situation is best described with a bit of code:

class Foo {
    function bar () {
        echo "called Foo::bar()";
    }
}

class SubFoo extends Foo {
    function __call($func) {
        if ($func == "bar") {
            echo "intercepted bar()!";
        }
    }
}

$subFoo = new SubFoo();

// what actually happens:
$subFoo->bar();    // "called Foo:bar()"

// what would be nice:
$subFoo->bar();    // "intercepted bar()!"

我知道我可以通过在子类中重新定义bar()(以及所有其他相关方法)来使其工作，但是出于我的目的，如果__call函数可以处理它们，那就太好了.它只是使事情变得更整洁，更易于管理.

I know I can get this to work by redefining bar() (and all the other relevant methods) in the sub-class, but for my purposes, it'd be nice if the __call function could handle them. It'd just make things a lot neater and more manageable.

这在PHP中可行吗?

推荐答案

__call() 仅在找​​不到该函数的情况下才被调用，因此您编写的示例无法实现.

__call() is only invoked when the function isn't otherwise found so your example, as written, is not possible.

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