<div id="page-url">
    <?php
        $pageUrl = "http";
        if(isset($_SERVER["HTTPS"]) && $_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"];
        }

        echo "Sayfa URL'si: " . $pageUrl;
    ?>
</div>