Recaptcha

I also do not know where to get: reCAPTCHA_site_key if there is any?

add reCAPTCHA_site_key in your .env file and call it like this

{{ env('reCAPTCHA_site_key') }}

Here I found google recaptcha: https://packagist.org/packages/google/recaptcha

It gives me this for the backend:

		<?php

		require_once '/path/to/recaptcha/src/autoload.php';

		$recaptcha = new \ReCaptcha\ReCaptcha($secret);
		$resp = $recaptcha->setExpectedHostname('recaptcha-demo.appspot.com')
              ->setExpectedAction('homepage')
              ->setScoreThreshold(0.5)
              ->verify($gRecaptchaResponse, $remoteIp);

		if ($resp->isSuccess()) {
				// Verified!
				return view('store.contact', compact('recaptcha'));
		} else {
			$errors = $resp->getErrorCodes();
		}

Yet, I do not know how to show the recaptcha on the frontend. Is it like this?

		{{ $recaptcha }}

I actually get this:

Undefined variable: recaptcha (View: F:\xampp74\htdocs\zws_admin_8\resources\views\contact.blade.php)

Try using a package that is for Laravel https://github.com/ARCANEDEV/noCAPTCHA

Thanks. I am trying to implement the package:

Error Class 'Illuminate\Support\Facades\Input' not found

FPController.php

		use Illuminate\Support\Facades\Input;
		use Arcanedev\NoCaptcha\Rules\CaptchaRule;
		
		...
		public function sendmail(request $request)
		{

    	$blogs = Blog::take(3)->get();
    	$contact = Contact::find(1);
    	$setting = Setting::first();

    	$this->recaptcha($contact);

    	return view('contact')->with(compact('blogs', 'contact', 'setting'));
	}

	public function recaptcha($contact)
	{

    $inputs   = Input::all();
    $rules    = [
                // Other validation rules...
                'g-recaptcha-response' => ['required', new CaptchaRule],
                ];

    $messages = [
                'g-recaptcha-response.required' => 'Your custom validation message.',
                'g-recaptcha-response.captcha'  => 'Your custom validation message.',
                ];

    $validator = Validator::make($inputs, $rules, $messages);

    if ($validator->fails()) {
                $errors = $validator->messages();

                var_dump($errors->first('g-recaptcha-response'));

                // Redirect back or throw an error

                Session::flash('error', 'Error recaptcha!');
                }
        else {

                Mail::to($contact->contact_email)
                    ->send(new ContactMail($request->all()));

                Session::flash('flash', 'successfully send email');

                }

		}

config/app.php

			'aliases' => [
				
			...
		     'Input' => Illuminate\Support\Facades\Input::class,
		    ],

ref: https://stackoverflow.com/questions/31696679/laravel-5-class-input-not-found