PHP call public variable in another class - php

Question

I am trying to call a public variable used in a class in another class. I am able to call the variable but it returns a blank array.
Code that I am working on,
Class One:
class fruits {
public $ID = array();
private function getFruitID() {
$fruitID = array('1' , '2', '3' , '4' , '5' );
return $fruitID;
}
private function getFruitsName() {
$fruitName = array('apple' , 'orange' , 'kiwi' , 'grapes' , 'mango');
return $fruitName ;
}
public function getstock() {
$this->ID = getFruitID();
/* Prints the ID list here */
$this->name = getFruitsName();
/* This function renders to the template */
}
}
Class Two:
class TestPage{
public function displayFruits() {
require_once ('fruits.php');
$fruits = new fruits();
$data = $fruits->ID;
echo($data);
/* displays an empty array */
}
}
When I echo $data inside displayFruits() on TestPage, it prints a blank array and not the actual ids. I am stuck with getting the ids on TestPage class. I could use a return, but that way I would end with just one variable, and I have multiple variables inside that function. Any help would be much appreciated.

Answer 1

you are not contructing the array with anything ..
public $ID = array();
is blank... until you call getFruitID
you can add it into the constructor if you need.
constructors PHP
function __construct( ){
$this->getstock();
}
This means when you create your object new Fruit();
It will assign the array in its creation.

Answer 2

At the moment it is empty.
public $ID = array();
Add below to populate array
class TestPage{
public function displayFruits() {
require_once ('fruits.php');
$fruits = new fruits();
$fruits->getstock();
$data = $fruits->ID;
echo($data);
}
}