How can hidden fields be used to pass dynamic variable values between PHP scripts?

Hidden fields can be used in HTML forms to pass dynamic variable values between PHP scripts. These hidden fields are not visible to users but can be submitted along with the form data. In the first PHP script, you can set the value of the hidden field dynamically using PHP variables. In the second PHP script, you can access the value of the hidden field using the $_POST superglobal array.

// First PHP script
$value = "dynamic_value";
echo "<form method='post' action='second_script.php'>
        <input type='hidden' name='hidden_field' value='$value'>
        <input type='submit' value='Submit'>
      </form>";

// Second PHP script (second_script.php)
if(isset($_POST['hidden_field'])){
  $hidden_value = $_POST['hidden_field'];
  echo "Hidden field value: " . $hidden_value;
}