Title: Really Simple CAPTCHA Author: Rock Lobster Inc. Published: 10 mars 2009 Last modified: 1 februari 2025 --- Sök tillägg ![](https://ps.w.org/really-simple-captcha/assets/banner-772x250.png?rev=880406) Det här tillägget **har inte testats med någon av de 3 senaste huvudversionerna av WordPress**. Det kanske inte längre underhålls och kan ha kompatibilitetsproblem när det används tillsammans med nyare versioner av WordPress. ![](https://ps.w.org/really-simple-captcha/assets/icon-256x256.png?rev=1047241) # Really Simple CAPTCHA Av [Rock Lobster Inc.](https://profiles.wordpress.org/rocklobsterinc/) [Ladda ner](https://downloads.wordpress.org/plugin/really-simple-captcha.2.4.zip) * [Detaljer](https://sv.wordpress.org/plugins/really-simple-captcha/#description) * [Recensioner](https://sv.wordpress.org/plugins/really-simple-captcha/#reviews) * [Installation](https://sv.wordpress.org/plugins/really-simple-captcha/#installation) * [Utveckling](https://sv.wordpress.org/plugins/really-simple-captcha/#developers) [Support](https://wordpress.org/support/plugin/really-simple-captcha/) ## Beskrivning Really Simple CAPTCHA does not work alone and is intended to work with other plugins. It is originally created for [Contact Form 7](https://contactform7.com/), 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. #### Hur fungerar det? 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 = wp_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 ); ``` Det är allt. If you wish to see a live sample of this, you can try [Contact Form 7](https://contactform7.com/captcha/). ## Skärmdumpar * [[ * screenshot-1.png ## Installation I de flesta fall kan du installera automatiskt från WordPress. Om du installerar detta manuellt, följ dessa steg: 1. Upload the entire `really-simple-captcha` folder to the `/wp-content/plugins/` directory. 2. Aktivera tillägget via menyn ”Tillägg” i WordPress. FYI: There is no ”control panel” for this plugin. ## Vanliga frågor ### CAPTCHA does not work; the image does not show up. Really Simple CAPTCHA needs GD and FreeType library installed on your server. Ask your server administrator if they are installed. Also, make the temporary file folder writable. The location of the temporary file folder is managed by the instance variable `tmp_dir` of ReallySimpleCaptcha class. Note that the setting varies depending on the calling plugin. For example, Contact Form 7 uses `wp-contents/uploads/wpcf7_captcha` as the temporary folder basically, but it can use different folder depending on your settings. If you have any further questions, please submit them [to the support forum](https://wordpress.org/support/plugin/really-simple-captcha). ## Recensioner ![](https://secure.gravatar.com/avatar/e627f34d1ed130ebc94bb0ca9314b4bafc8ab7d021047522bd4b25d643f858a8? s=60&d=retro&r=g) ### 󠀁[Prima, funktioniert auch auf meiner WP 6.9 einwandfrei](https://wordpress.org/support/topic/prima-funktioniert-auch-auf-meiner-wp-6-9-einwandfrei/)󠁿 [afudo1tlg](https://profiles.wordpress.org/afudo1tlg/) 13 januari 2026 Super simple! Einfach in Contact Form 7 Version 6.1.4 einzubinden. Danke. Meine WordPress Installation: Version 6.9.PHP Version 8.4.15 ![](https://secure.gravatar.com/avatar/102d46bc8cc18bdb8bb252de26388aafa9186150f904007befeaf514af4c1f52? s=60&d=retro&r=g) ### 󠀁[Bad](https://wordpress.org/support/topic/bad-353/)󠁿 [Diego Soto](https://profiles.wordpress.org/diego-soto/) 15 september 2025 1 svar I’m sorry to have to give this a bad rating. The amount of spam with Contact Form 7 was enormous. I had to remove it. ![](https://secure.gravatar.com/avatar/bed0303e15fbaf6ccf27290abc29160870a170e0eb5265e01a0c8c649c8574c7? s=60&d=retro&r=g) ### 󠀁[Works great with Gravity Forms in 2024!](https://wordpress.org/support/topic/works-great-with-gravity-forms-in-2024/)󠁿 [Maxcom](https://profiles.wordpress.org/maxcom/) 19 augusti 2024 Nothing but positives. We added this to our Gravity Form in order to obtain the dynamic math captcha. One can create a simple math captcha in GF but not dynamically changing for each form load insofar as I can determine. And GF google captcha Ver 3 is a pain with the need for google api keys. So we added this plugin and it was very easy – add the captcha field to the form, select ”math” in the settings for the field and done! We find that Gravity Forms Zero Spam plugin was helping to deter spam entries but it with this captcha is 100% so far for spam prevention. Thank you Takayuki Miyoshi! ![](https://secure.gravatar.com/avatar/c910362dbfbd49f8ec8c185f618f4db62e2842297530d6f8bc8cf903d26da6c9? s=60&d=retro&r=g) ### 󠀁[Good Simple Banner](https://wordpress.org/support/topic/good-simple-banner/)󠁿 [nicolasvsedeco](https://profiles.wordpress.org/nicolasvsedeco/) 25 oktober 2023 Helo, very simple banner for cookies but there is a little bug. The banner Cookies are shown in Widgets page. ![](https://secure.gravatar.com/avatar/a9f956dcdf45addfd12c942879c61a6fa5c9c113e674409a0b825e47c0ae94ac? s=60&d=retro&r=g) ### 󠀁[Bad and not work to stabilite](https://wordpress.org/support/topic/bad-and-not-work-to-stabilite/)󠁿 [gurcantet](https://profiles.wordpress.org/gurcantet/) 11 april 2023 spam is continue to come… ![](https://secure.gravatar.com/avatar/ec51b32c53259c5d1abbbf367b2ca7b3f19775f179f869d413ca0f103cdd6515? s=60&d=retro&r=g) ### 󠀁[test](https://wordpress.org/support/topic/test-132/)󠁿 [rahzan](https://profiles.wordpress.org/rahzan/) 16 september 2022 we [ Läs alla 129 betyg ](https://wordpress.org/support/plugin/really-simple-captcha/reviews/) ## Bidragsgivare och utvecklare ”Really Simple CAPTCHA” är programvara med öppen källkod. Följande personer har bidragit till detta tillägg. Bidragande personer * [ Rock Lobster Inc. ](https://profiles.wordpress.org/rocklobsterinc/) * [ Takayuki Miyoshi ](https://profiles.wordpress.org/takayukister/) ”Really Simple CAPTCHA” har översatts till 41 språk. Tack till [översättarna](https://translate.wordpress.org/projects/wp-plugins/really-simple-captcha/contributors) för deras bidrag. [Översätt ”Really Simple CAPTCHA” till ditt språk.](https://translate.wordpress.org/projects/wp-plugins/really-simple-captcha) ### Intresserad av programutveckling? [Läs programkoden](https://plugins.trac.wordpress.org/browser/really-simple-captcha/), kika på [SVN-filförvaret](https://plugins.svn.wordpress.org/really-simple-captcha/) eller prenumerera på [utvecklarloggen](https://plugins.trac.wordpress.org/log/really-simple-captcha/) via [RSS](https://plugins.trac.wordpress.org/log/really-simple-captcha/?limit=100&mode=stop_on_copy&format=rss). ## Ändringslogg #### 2.4 * Bumps up the minimum required WordPress version to 6.6. * Introduces the ReallySimpleCaptcha_Filesystem trait. * Uses SHA-256 as the hash algorithm. * Uses `wp_rand()` instead of `mt_rand()`. ## Meta * Version **2.4** * Senast uppdaterat **1 år sedan** * Aktiva installationer **300 000+** * WordPress-version ** 6.6 eller senare ** * Testat upp till **6.7.5** * PHP-version ** 7.4 eller senare ** * Språk * [Albanian](https://sq.wordpress.org/plugins/really-simple-captcha/), [Basque](https://eu.wordpress.org/plugins/really-simple-captcha/), [Catalan](https://ca.wordpress.org/plugins/really-simple-captcha/), [Chinese (China)](https://cn.wordpress.org/plugins/really-simple-captcha/), [Chinese (Taiwan)](https://tw.wordpress.org/plugins/really-simple-captcha/), [Croatian](https://hr.wordpress.org/plugins/really-simple-captcha/), [Czech](https://cs.wordpress.org/plugins/really-simple-captcha/), [Danish](https://da.wordpress.org/plugins/really-simple-captcha/), [Dutch](https://nl.wordpress.org/plugins/really-simple-captcha/), [Dutch (Belgium)](https://nl-be.wordpress.org/plugins/really-simple-captcha/), [English (Australia)](https://en-au.wordpress.org/plugins/really-simple-captcha/), [English (Canada)](https://en-ca.wordpress.org/plugins/really-simple-captcha/), [English (New Zealand)](https://en-nz.wordpress.org/plugins/really-simple-captcha/), [English (South Africa)](https://en-za.wordpress.org/plugins/really-simple-captcha/), [English (UK)](https://en-gb.wordpress.org/plugins/really-simple-captcha/), [English (US)](https://wordpress.org/plugins/really-simple-captcha/), [French (Canada)](https://fr-ca.wordpress.org/plugins/really-simple-captcha/), [French (France)](https://fr.wordpress.org/plugins/really-simple-captcha/), [Galician](https://gl.wordpress.org/plugins/really-simple-captcha/), [German](https://de.wordpress.org/plugins/really-simple-captcha/), [Hungarian](https://hu.wordpress.org/plugins/really-simple-captcha/), [Italian](https://it.wordpress.org/plugins/really-simple-captcha/), [Japanese](https://ja.wordpress.org/plugins/really-simple-captcha/), [Lithuanian](https://lt.wordpress.org/plugins/really-simple-captcha/), [Marathi](https://mr.wordpress.org/plugins/really-simple-captcha/), [Persian](https://fa.wordpress.org/plugins/really-simple-captcha/), [Portuguese (Brazil)](https://br.wordpress.org/plugins/really-simple-captcha/), [Romanian](https://ro.wordpress.org/plugins/really-simple-captcha/), [Russian](https://ru.wordpress.org/plugins/really-simple-captcha/), [Slovak](https://sk.wordpress.org/plugins/really-simple-captcha/), [Spanish (Argentina)](https://es-ar.wordpress.org/plugins/really-simple-captcha/), [Spanish (Chile)](https://cl.wordpress.org/plugins/really-simple-captcha/), [Spanish (Colombia)](https://es-co.wordpress.org/plugins/really-simple-captcha/), [Spanish (Ecuador)](https://es-ec.wordpress.org/plugins/really-simple-captcha/), [Spanish (Mexico)](https://es-mx.wordpress.org/plugins/really-simple-captcha/), [Spanish (Spain)](https://es.wordpress.org/plugins/really-simple-captcha/), [Spanish (Venezuela)](https://ve.wordpress.org/plugins/really-simple-captcha/), [Swahili](https://sw.wordpress.org/plugins/really-simple-captcha/), [Swedish](https://sv.wordpress.org/plugins/really-simple-captcha/), [Tibetan](https://bo.wordpress.org/plugins/really-simple-captcha/), [Turkish](https://tr.wordpress.org/plugins/really-simple-captcha/) och [Ukrainian](https://uk.wordpress.org/plugins/really-simple-captcha/). * [Översätt till ditt språk](https://translate.wordpress.org/projects/wp-plugins/really-simple-captcha) * Etikett * [captcha](https://sv.wordpress.org/plugins/tags/captcha/) * [Avancerad vy](https://sv.wordpress.org/plugins/really-simple-captcha/advanced/) ## Betyg 4.2 av 5 stjärnor. * [ 90 5-stjärniga recensioner ](https://wordpress.org/support/plugin/really-simple-captcha/reviews/?filter=5) * [ 15 4-stjärniga recensioner ](https://wordpress.org/support/plugin/really-simple-captcha/reviews/?filter=4) * [ 1 3-stjärnig recension ](https://wordpress.org/support/plugin/really-simple-captcha/reviews/?filter=3) * [ 4 2-stjärniga recensioner ](https://wordpress.org/support/plugin/really-simple-captcha/reviews/?filter=2) * [ 19 1-stjärniga recensioner ](https://wordpress.org/support/plugin/really-simple-captcha/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/really-simple-captcha/reviews/#new-post) [Se alla recensioner](https://wordpress.org/support/plugin/really-simple-captcha/reviews/) ## Bidragande personer * [ Rock Lobster Inc. ](https://profiles.wordpress.org/rocklobsterinc/) * [ Takayuki Miyoshi ](https://profiles.wordpress.org/takayukister/) ## Support Har du något att säga? Behöver du hjälp? [Visa supportforum](https://wordpress.org/support/plugin/really-simple-captcha/) ## Donera Skulle du vilja bidra till utvecklingen av detta tillägg? [ Donera till det här tillägget ](https://contactform7.com/donate/)