Really Simple CAPTCHAWordPress Plugin

Really Simple CAPTCHAWordpress Plugin Free download

  • PHP Version Required
  • Minimum WordPress Version Required:
    Wordpress 5.5 or higher
  • WordPress version Compatible Upto
    6.0.3
  • Active Installs
    600,000+
  • Plugin Total downloads:
    8.1M+
  • Really Simple CAPTCHA Supported Languages:
    Albanian, Catalan, Chinese (China), Chinese (Taiwan), Croatian, Czech, Danish, Dutch, Dutch (Belgium), English (Australia), English (Canada), English (New Zealand), English (South Africa), English (UK), English (US), French (Canada), French (France), Galician, German, Hungarian, Italian, Japanese, Lithuanian, Persian, Portuguese (Brazil), Romanian, Russian, Slovak, Spanish (Argentina), Spanish (Colombia), Spanish (Ecuador), Spanish (Mexico), Spanish (Spain), Spanish (Venezuela), Swedish, Tibetan, and Ukrainian.Translate into your language

Really Simple CAPTCHA WordPress Plugin overview

really simple captcha is a captcha module intended to be called from other plugins. It is originally created for my contact form 7 plugin..

Really Simple CAPTCHA does not work alone and is intended to work with other plugins. It is originally created for Contact Form 7, however, you can use it with your own plugin.

Note: This product is “really simple” as its name suggests, i.e., it is not strongly secure. If you need perfect security, you should try other solutions.

How does it work?

Really Simple CAPTCHA does not use PHP “Sessions” for storing states, unlike many other php captcha solutions, but stores them as temporary files. This allows you to embed it into wordpress without worrying about conflicts.

When you generate a CAPTCHA, really simple captcha creates two files for it; one is an image file of CAPTCHA, and the other is a text file which stores the correct answer to the CAPTCHA.

The two files have the same (random) prefix in their file names, for example, “a7hk3ux8p.png” and “a7hk3ux8p.txt.” In this case, for example, when the respondent answers “K5GF” as an answer to the “a7hk3ux8p.png” image, then really simple captcha calculates hash of “K5GF” and tests it against the hash stored in the “a7hk3ux8p.txt” file. If the two match, the answer is confirmed as correct.

How to use with your plugin

Note: Below are instructions for plugin developers.

First, create an instance of ReallySimpleCaptcha class:

$captcha_instance = new ReallySimpleCaptcha();

You can change the instance variables as you wish.

// Change the background color of captcha image to black

$captcha_instance->bg = array( 0, 0, 0 );

See really-simple-captcha.php if you are interested in other variables.

Generate a random word for CAPTCHA.

$word = $captcha_instance->generate_random_word();

Generate an image file and a corresponding text file in the temporary directory.

$prefix = mt_rand();

$captcha_instance->generate_image( $prefix, $word );

Then, show the image and get an answer from respondent.

Check the correctness of the answer.

$correct = $captcha_instance->check( $prefix, $the_answer_from_respondent );

If the $correct is true, go ahead. Otherwise, block the respondent — as it would appear not to be human.

And last, remove the temporary image and text files, as they are no longer in use.

$captcha_instance->remove( $prefix );

That’s all.

If you wish to see a live sample of this, you can try Contact Form 7.

Really Simple CAPTCHA screenshot-1.png
screenshot-1.png

Really Simple CAPTCHA Wordpress Plugin download

In most cases you can install automatically from WordPress.

However, if you install this manually, follow these steps:

  1. Upload the entire really-simple-captcha folder to the /wp-content/plugins/ directory.
  2. Activate the plugin through the ‘Plugins’ menu in WordPress.

FYI: There is no “control panel” for this plugin.

Really Simple CAPTCHA Wordpress Plugin download

Here is the Really Simple CAPTCHA wordpress plugin download link you can download and install to your Wordpress Website.

Download Really Simple CAPTCHA Wordpress plugin directly

Download Really Simple CAPTCHA from wordpress Plugin repostiory

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