Find the full URL that a PHP script is running at , minus the name of the file

hosted-path.php

//Find the full url to the site we are at
$protocol = $_SERVER['HTTPS'] == 'on' ? 'https' : 'http';
$address =  $protocol.'://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
$currentFile = $_SERVER["SCRIPT_NAME"];
$parts = Explode('/', $currentFile);
$currentFile = $parts[count($parts) - 1];
$site_path = str_replace($currentFile,'',$address);