Question

I’m using PHP here, and I have two classes. Can I call a function from one class in the other one. For example:

class A
{
    function a_func()
    {
        echo "A function";
    }
}

$a = new A();

class B
{
    function b_func()
    {
        $a->a_func();    // This is the thing I'm stuck with.
    }
}

I hope I’ve made myself clear here. I had a look on Google, but I don’t know what this is called so I came up with nothing. Thanks for any help.

Answer 1

You have 2 workarounds:
1) If your a_func doesn’t need an instance (seems it’s the case), you can make the function static and call it from the second class

class A
{
    public static function a_func()
    {
        echo "A function";
    }
}

class B
{
    function b_func()
    {
        A::a_func(); 
    }
}

2) 1) If your a_func needs an instance, you’re forced to create one:

class A
{
    public function a_func()
    {
        echo "A function";
    }
}

class B
{
    function b_func()
    {
        $a = new A;
        $a->a_func();
    }
}