The back function generates a redirect HTTP response to the user's previous location:
<?php return back($status = 302, $headers = [], $fallback = '/');

return back();
<?php         $this->tokenData = session('statamic:protect:password.tokens.'.request('token'));



        if (! $this->tokenData) {

            return back()->withErrors(['token' => 'Invalid or expired token.'], 'passwordProtect');

        }



        $guard = new Guard($this->getScheme());
<?php         $guard = new Guard($this->getScheme());



        if (! $guard->check($this->password)) {

            return back()->withErrors(['password' => 'Incorrect password.'], 'passwordProtect');

        }



        return $this
<?php         $redirect = $request->has('_redirect')

            ? redirect($request->input('_redirect'))

            : back();



        return $request->wantsJson()

            ? new JsonResponse(['message' => trans($response)], 200)
<?php     {

        $redirect = $request->has('_error_redirect')

            ? redirect($request->input('_error_redirect'))

            : back();



        if ($request->wantsJson()) {

            throw ValidationException::withMessages([
<?php         DuplicateIdRegenerated::dispatch();



        return back()->with('success', __('ID regenerated and Stache cleared'));

    }



    private function getStoreByPath(string $path)
<?php         ]);



        if (Facades\Fieldset::find($request->handle)) {

            return back()->withInput()->with('error', __('A fieldset with that name already exists.'));

        }



        $fieldset = (new Fieldset)
<?php     {

        session()->put('statamic.cp.selected-site', $handle);



        return back()->with('success', 'Site selected.');

    }

}
<?php         $this->clearApplicationCache();

        $this->clearImageCache();



        return back()->withSuccess(__('All caches cleared.'));

    }



    protected function clearStacheCache()
<?php     {

        Stache::refresh();



        return back()->withSuccess(__('Stache cleared.'));

    }



    protected function clearStaticCache()
<?php     {

        app(StaticCacher::class)->flush();



        return back()->withSuccess(__('Static page cache cleared.'));

    }



    protected function clearApplicationCache()
<?php         return back()->withSuccess(__('Application cache cleared.'));

    }



    protected function clearImageCache()
<?php     {

        Artisan::call('statamic:glide:clear');



        return back()->withSuccess(__('Image cache cleared.'));

    }

}
<?php         Mail::to($request->email)->send(new Test);



        return back()->withSuccess(__('Test email sent.'));

    }

}
<?php     {

        Git::commit();



        return back()->withSuccess(__('Content committed'));

    }

}
<?php             Search::index($index)->update();

        });



        return back()->withSuccess(__('Indexes successfully updated.'));

    }

}