PHP: Include methods from one class.php to output variables in another?

Question

Apologies if my terminology isn't correct. I would like to use methods/functions from one class and use them to output variables from another class file. This is my main base:

Sphere.class.php

   <?php

    class SphereCalculator {


    const PI = 3.14;
    const FOUR_THIRDS = 1.33;

    
        public function __construct($radius){
            $this->setRadius ($radius);
        }
   
        public function setRadius ($radius){
            $this->classRadius = $radius;
        }
    
        public function getRadius(){
            return $this->classRadius;
        }
    
    
        public function getArea () {
        
            return self::PI * ($this->classRadius * $this->classRadius);
        }
    
    }

    $mySphere = new SphereCalculator ($newRadius);

And so using this class's functions, I would like to output the radius and area from a second php file using include to pull over the methods. But I'm really clueless as to where to start. I have looked up many tutorials but they are all for two classes with the one php file. Here is as far as I have gotten.

App.class.php

 <?php
    include ("Sphere.class.php");
    
    class AppClass {
    
    
    
        function __construct($radius)
        {

        //something here to call $radius from
        //base class and set it to $newRaduis
        
        }
    
        function callSphereClass ($mySphere)
        {
        //something to call $mySphere
        //something here to allocate $newRadius

        echo "The radius is ".$newRadius."<br>";
        echo "The area is ".$mySphere->getArea ()."<br>";
        }
    
    }


    $newRadius = 113;

    $appClass = new AppClass ();
    $appClass->callSphereClass();

    ?>

Answer 1

HI you could do this.

<?php
    include ("Sphere.class.php");

    class AppClass {



        function __construct()
        {
            // YOU DO NOT NEED ANYTHING HERE BECAUSE YOU ARE NOT PASSING
            // ANY VALUES INTO THE CONSTRUCTOR
        }

        function callSphereClass ($mySphere)
        {
            //something to call $mySphere
            // CREATE AN INSTANCE OF SphereCalculator
            $createdObj = new SphereCalculator($mySphere);

            //something here to allocate $newRadius
            // USE THE METHODS THROUGH THE OBJECT $createdObj
            echo "The radius is ".$createdObj->getRadius() ."<br />"; // not $newRadius."<br>";
            echo "The area is ".$createdObj->getArea ()."<br>";
        }

    }


    $newRadius = 113; // this needs to be passed into the callSphereClass()

    $appClass = new AppClass();
    $appClass->callSphereClass($newRadius); // like this

?>