如何调用一个类的方法? [英] How to call a method of a class?

问题描述

我在一个类中有2个公共函数，必须在同一个类中使用不同的参数调用1个私有函数...由于某种原因，它告诉我找不到该函数...

I got 2x public functions in a class that must call 1 private function with different parameters also in the same class... for some reason it tell me that it can't find the function...

示例:

class Foo {    

private function Do(...)     
{
       ....
       return $whatever;
}

public function One(...)    
{
  return Do(...);
}

public function Two(...)    
{ 
       return Do(...);
} 

}

出现错误:

致命错误:在...中调用未定义的函数do()

Fatal error: Call to undefined function do() in ...

推荐答案

您必须使用$this来引用实例和

You have to use $this to refer to the instance and the T_OBJECT_OPERATOR to access/mutate/call members/methods of an instance, e.g.

$this->do();

请通过

• PHP手册中有关类和对象的章节和
• 在PHP中拥有$ this和self ::有什么意义?

• Chapter on Classes and Objects in the PHP Manual and
• What is the point of having $this and self:: in PHP?

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