我可以用变量调用方法吗?

问题描述：

我可以在PHP中执行以下操作吗?

Can I do the following in PHP?

$lstrClassName  = 'Class';
$lstrMethodName = 'function';
$laParameters   = array('foo' => 1, 'bar' => 2);

$this->$lstrClassName->$lstrMethodName($laParameters);

我现在使用的解决方案是通过eval()调用函数，如下所示:

The solution I'm using now, is by calling the function with eval() like so:

eval('$this->'.$lstrClassName.'->'.$lstrMethodName.'($laParameters);');

我很好奇是否有更好的方法可以解决这个问题.

I'm curious if there is a beter way to solve this.

谢谢！

答

您不需要评估...取决于您的版本

You don't need eval to do that ... depending on your version

示例

class Test {
    function hello() {
        echo "Hello ";
    }

    function world() {
        return new Foo ();
    }
}

class Foo {

    function world() {
        echo " world" ;
        return new Bar() ;
    }

    function baba() {

    }
}

class Bar {

    function world($name) {
        echo $name;
    }


}


$class = "Test";
$hello = "hello";
$world = "world";
$object = new $class ();
$object->$hello ();
$object->$world ()->$world ();
$object->$world ()->$world ()->$world(" baba ");

输出

Hello World baba

如果您使用的是PHP 5.4，则可以直接调用它而不必声明变量

And if you are using PHP 5.4 you can just call it directly without having to declare variables

您可能还希望查看call_user_func http://php.net/manual/en/function.call-user-func.php

我可以用变量调用方法吗?

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