A simple math question (+,-,*) to validate user input.

composer require elic-dev/laravel-math-captcha

This package supports Laravel Package Auto-Discovery.

You can add the ServiceProvider to the providers array in app/config/app.php.

ElicDev\MathCaptcha\MathCaptchaServiceProvider::class,

This package only returns the question and the input. You have to position it within your labels and form classes.

{{ app('mathcaptcha')->label() }}
{!! app('mathcaptcha')->input() !!}

Display it wihtin Bootstrap as example:

<div class="form-group">
    <label for="mathgroup">Please solve the following math function: {{ app('mathcaptcha')->label() }}</label>
    {!! app('mathcaptcha')->input(['class' => 'form-control', 'id' => 'mathgroup']) !!}
    @if ($errors->has('mathcaptcha'))
        <span class="help-block">
            <strong>{{ $errors->first('mathcaptcha') }}</strong>
        </span>
    @endif
</div>

Looks like

Add 'mathcaptcha' => 'required|mathcaptcha' to rules array.

$this->validate($request, [
    'mathcaptcha' => 'required|mathcaptcha',
]);

Add corresponding translation string to your lang/validation.php files.

This package does not generate a new math question for each request. Once the form has been submited without validation erros you can reset the library to force generate a new question.

app('mathcaptcha')->reset();

You can adjust the available operands (+,-,*) and minimum or maximum randum values used. Some users might stuggle with more complex math operations.

php artisan vendor:publish --provider="ElicDev\MathCaptcha\MathCaptchaServiceProvider" --tag=config

It is possible to show the math question as text (e.g. "Four plus Five"). You can adjust a setting in the config file. This requires translations and a language files. A few languages are provided with this package.

php artisan vendor:publish --provider="ElicDev\MathCaptcha\MathCaptchaServiceProvider" --tag=lang