从扩展类调用函数

Question

I want to develop something like my own framework for further websites, there is an existent answered question about my queries but i would like someone to help me so there is

frameworkclass.php

class Framework{
  public function hello(){
  echo "Hello World!";
}

anotherclass.php

class New extends Framework{
  $hellomessage = self::hello(); 
}

Well I know that I have to type parent::hello() to call the hello function from Framework class but how can i do it without typing everytime parent:: I don't know maybe something like this $Framework->anyfunction()?

Another thing that I don't understand about oop is whats the difference about a static variable and other types, or between public protected or private functions ? What is a framework auto load function and whats the difference about the caching system of a framework and a framework based on sessions ? Thanks!

Answer 1

You can't initialise a property with a method.

class Framework {
    public function hello() {
       return "Hello World!";
    }
}

class New extends Framework {
    public $hellomessage;

    public function __construct() {
        $this->hellomessage = parent::hello();
    }
}