Had a request to return the last 23 characters of a url. I am WAY not a coder, but was able to help modify this function to work. Of course, you probably won’t just want to echo the output, but use it as a variable for something else.

<?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;
}
echo substr(curpageURL(),-23);?>