How can hidden form elements be utilized in PHP to pass parameters between pages?

Hidden form elements can be utilized in PHP to pass parameters between pages by including them in a form on one page and submitting the form to another page. These hidden form elements can store values that need to be passed between pages without displaying them to the user. On the receiving page, the values of the hidden form elements can be accessed using PHP.

<!-- Page 1: form with hidden input -->
<form action="page2.php" method="post">
    <input type="hidden" name="param1" value="value1">
    <input type="hidden" name="param2" value="value2">
    <input type="submit" value="Submit">
</form>
```

```php
<!-- Page 2: retrieve hidden input values -->
<?php
$param1 = $_POST['param1'];
$param2 = $_POST['param2'];

echo "Parameter 1: " . $param1 . "<br>";
echo "Parameter 2: " . $param2;
?>