Grab URL PHP code for FaceBook Comments HTTP to HTTPS

Hello, I have been using this code to grab the current page URL to input it into my Facebook comments through out my website:

<?php
function curPageURL() {
$pageURL = 'http';
if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
$pageURL .= "://";
if ($_SERVER["SERVER_PORT"] != "80") {
$pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
} else {
$pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
}
return $pageURL;
}
?>


I then use this command to input the URL into my FB comments for all pages:

<?php echo curPageURL();?>

It has been working great. But recently I just switch from HTTP to HTTPS on my entire domain. Now all of a sudden I have lost all my facebook comments on all my pages.

So basically what I need to happen is make it so the Facebook comments are still all on the old HTTP url and not the new HTTPS url. Is there a way I can tweak that code above so that it reverts to the HTTP so I still have all the old FB comments?

 

You know that mixing content will trigger warnings in most browsers, right? And in Firefox it won't load at all unless the user allows it.