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use Illuminate\Support\Facades\Request;
$fullUrl = url(Request::fullUrl());
echo $fullUrl;
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// 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();
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\Request::fullUrlWithQuery()
\Request::query()
\Request::getQueryString() //Apenas as query strings