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iterables.php
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body style="text-align:center">
<?php
class CreateIterators implements Iterator {
private $products = [];
private $productKey = 0;
public function __construct ($products){
$this->products = $products;
}
public function current(){
return $this->products[$this->productKey];
}
public function key(){
return $this->productKey;
}
public function next() {
$this->productKey++;
}
public function rewind() {
$this->productKey = 0;
}
public function valid() {
return $this->productKey < count($this->products);
}
}
function productsIterable(iterable $products){
foreach($products as $product){
echo $product;
}
}
$allProducts = new CreateIterators([1,2,3,4,5]);
productsIterable($allProducts);
?>
</body>
</html>