PHP OOP 打印一个在函数内部具有值但从外部调用以进行打印的变量 [英] PHP OOP print a variable which has value inside the function but call from outside to be print

问题描述

是否可以打印一个变量，它的值在函数内部，但它是从函数外部调用的，以便在对象中打印面向 PHP 的编程

Is it possible to print a variable which has the value inside the function but it's called from outside the function to be print in object oriented programming in PHP

举例说明

我的类看起来像:

class my {
   public $a;

   public function myFunc(){
       $name = "fahad";
       echo $this->a;
   }

}

它应该在调用函数时打印 $name 的值，正如我正在尝试的那样:

It should print the value of $name when the function is call, as I am trying:

$class = new my();
$class->a = '$name';
$class->myFunc();

但它没有工作并将结果打印为:

But it did't work and print the result as:

$name

我希望它应该打印变量 $name 的值，它是内部函数

I want it should print the value of variable $name which is inside the function

怎么可能?

谢谢.

推荐答案

您可以使用 variable variables 这样做，但通常被认为是不好的做法.

You can use variable variables to do this, but it's usually considered bad practice.

class my {
   public $a;

   public function myFunc(){
       $name = "fahad";
       echo ${$this->a};
   }
}

$class = new my();
$class->a = 'name';
$class->myFunc();

输出:

fahad

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