function currentURL() {
$pageURL = ‘http’;
if ($_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;
}
$url = currentURL(); //get the current url
 
//I use big button here, feel free to change it
echo "
url = ‘$url’;

";
 

fonte: www.sastgroup.com