foreach loop in OOP

[spence911]

I'm a beginner currently studying Object Oriented Programming. The code in question is quite long so I will just share the snippet that I can't understand.

private $productlist = array();

public function addproduct($product){
$this->productlist[] = $product;
}

public function stockup(){
foreach($this->productlist as $product){
$product->addstock(100);
}

I'm sure that function addproduct adds product objects to the product list array. What does the foreach loop:

 

foreach($this->productlist as $product)

 

in the stockup function do? Does it take those values and store them back in $product?

[AbraCadaver]

The foreach construct provides an easy way to iterate over arrays.

 

http://us2.php.net/manual/en/control-structures.foreach.php

 

It is iterating over each item in $this->productlist (which appear to be product objects) so that you can reference it as $product and do something with it.    It appears that it is call the addstock() method on each object and adding 100 to the in stock quantity of each product, but we would need to see the addstock() function to tell.

[spence911]

Crystal clear now. Thanks Cracka Memba.