In PHP: How to call a $variable inside one function that was defined previously inside another function?

Question

I\'m just starting with Object Oriented PHP and I have the following issue:

I have a class that contains a function that contains a certain script. I need to call a

Answer 1

Make $var a class variable:

class HelloWorld {

    var $var;

    function sayHello() {
        echo "Hello";
        $this->var = "World";
    }

    function sayWorld() {
        echo $this->var;
    }

}

I would avoid making it a global, unless a lot of other code needs to access it; if it's just something that's to be used within the same class, then that's the perfect candidate for a class member.

If your sayHello() method was subsequently calling sayWorld(), then an alternative would be to pass the argument to that method.