how to save many objects in a $session array variable - php

Question

I'm new in the object oriented programming so this question might be silly...
I've created my class in a separate file called classProduct.php
<?php
class product{
public $prodId;
public $prodName;
public $prodPrice;
public function __construct($prodId,$prodName,$prodPrice){
$this->prodId = $prodId;
$this->prodName=$prodName;
$this->prodPrice=$prodPrice;
}
public function get_prodId(){
return $this->prodId;
}
public function get_prodName(){
return $this->prodName;
}
public function get_prodPrice(){
return $this->prodPrice;
}
}
?>
Then I tried to create a new object in a $_SESSION variable. This happens in another file called dailySales.php where I include the previous file using:
include_once("classProduct.php");
What I want to do is to save in $_SESSION['myItems'] each new object. I am trying something like:
$newItem= new product($var,$var,$var);
$_SESSION['myItems']=array($newItem); // I believe here is where I do it wrong
Every time the buyer chooses one more products, the pages reloads (with ajax). When I echo or var_dump the $_SESSION['myItems'] I only get the last object. What do I need to change to get it working correctly?
Of course I do need the object so I can easily remove a product from the shopping cart if
'Delete' is pressed.

Answer 1

This is working for me locally.
Define your items session variable as an array, then push them into the variable using array_push
class product {
public $prodId;
public $prodName;
public $prodPrice;
public function __construct($prodId, $prodName, $prodPrice) {
$this->prodId = $prodId;
$this->prodName = $prodName;
$this->prodPrice = $prodPrice;
}
public function get_prodId() {
return $this->prodId;
}
public function get_prodName() {
return $this->prodName;
}
public function get_prodPrice() {
return $this->prodPrice;
}
}
Then use it like so:
$product = new product(1, "test", 23);
$product2 = new product(2, "test2", 43);
$_SESSION['items'] = array();
array_push($_SESSION['items'], $product, $product2);
echo '<pre>';
print_r($_SESSION['items']);
echo '</pre>';
This is the output of print_r()
Array
(
[0] => product Object
(
[prodId] => 1
[prodName] => test
[prodPrice] => 23
)
[1] => product Object
(
[prodId] => 2
[prodName] => test2
[prodPrice] => 43
)
)