// Get the current URL without the query string...
echo url()->current();
// Get the current URL including the query string...
echo url()->full();
// Get the full URL for the previous request...
echo url()->previous();

Example 1: current() with Helper
$currentURL = url()->current();
dd($currentURL);
Example 2: full() with Helper(with query string parameters)
$currentURL = url()->full();
dd($currentURL);
Example 3: current() with Facade
$currentURL = URL::current();
dd($currentURL);
Example 4: full() with Facade(with query string parameters)
$currentURL = URL::full();
dd($currentURL);
Example 5: using Request
$currentURL = Request::url();
dd($currentURL);
Get Previous URL in Laravel:
$url = url()->previous();
dd($url);
Get Current Route in Laravel:
$route = Route::current()->getName();
dd($route);

//get current url
use Illuminate\Support\Facades\Route;
Route::getFacadeRoot()->current()->uri();
//get current full url
$url = url()->current();

use Illuminate\Support\Facades\URL;
echo URL::current();