title: PHP - file_get_contents() with variable in string?
body: <p>Im trying to email an order with PHPMailer to the customer when this order is received.
  I tried doing that this way:</p>
  
  <pre><code>        $email_page = file_get_contents("email_order_html.php?order=$order_id");
  </code></pre>
  
  <p>I want to get the contents of this page as string so I can send this with PHPMailer but this function wont execute the page because of the variable $order_id in it, how can I fix this? </p>