Author: Mike Challis
Adds CAPTCHA anti-spam methods to WordPress on the comment form, registration form, login, or all.
In order to post comments or regiser, users will have to type in the phrase shown on the image.
This prevents spam from automated bots. Adds security. Works great with Akismet. Also is fully WPMU and BuddyPress compatible
Installation:
Upload the si-captcha-for-wordpress folder to the /wp-content/plugins/ directory, or download through the Plugins menu in WordPress
Activate the plugin through the Plugins menu in WordPress
Updates are automatic. Click on "Upgrade Automatically" if prompted from the admin menu. If you ever have to manually upgrade, simply deactivate, uninstall, and repeat the installation steps with the new version.
faq:
Sometimes the captcha image and captcha input field are displayed AFTER the submit button on the comment form.
Your theme must have a <?php do_action(comment_form, $post->ID); ?> tag inside your comments.php form. Most themes do.
The best place to locate the tag is before the comment textarea, you may want to move it if it is below the comment textarea.
This tag is exactly where the captcha image and captcha code entry will display on the form, so
move the line to before the comment textarea, uncheck the Comment Form Rearrange box on the Captcha options page,
and the problem should be fixed.
Alternate Fix for the captcha image display order
You can just check the Comment Form Rearrange box on the admin plugins Captcha options page and javascript will attempt to rearrange it for you. Editing the comments.php, moving the tag, and uncheck the Comment Form Rearrange box on the Captcha options page is the best solution.
Why is it better to uncheck the Comment Form Rearrange box and move the tag?
Because the XHTML will no longer validate if it is checked.
Why do I get "ERROR: Could not read CAPTCHA cookie. Make sure you have cookies enabled and not blocking in your web browser settings. Or another plugin is conflicting."?
Check your web browser settings and make sure you are not blocking cookies for your blog domain. Cookies have to be enabled in your web browser and not blocked for the blog web domain.
If you get this error, your browser is blocking cookies or you have another plugin that is conflicting (in that case I would like to help you further to determine which one). I can tell you that the plugin called "Shopp" is not compatible because it handles sessions differently causing the "ERROR: Could not read CAPTCHA cookie. Make sure you have cookies enabled".
The Cookie Test can be used to test if your browser is accepting cookies from your site:
Click on the "Test if your PHP installation will support the CAPTCHA" link on the Options page.
or open this URL in your web browser to run the test:
/wp-content/plugins/si-captcha-for-wordpress/captcha-secureimage/test/index.php
Troubleshooting if the CAPTCHA form fields and image is not being shown:
Do this as a test:
Activate the SI CAPTCHA plugin and temporarily change your theme to the "Wordpress Default" theme.
Does the captcha image show now?
If it does then the theme you are using is the cause.
Your theme must have a <?php do_action(comment_form, $post->ID); ?> tag inside your comments.php form. Most themes do.
The best place to locate the tag is before the comment textarea, you may want to move it if it is below the comment textarea.
This tag is exactly where the captcha image and captcha code entry will display on the form, so
move the line to before the comment textarea, uncheck the Comment Form Rearrange box on the Captcha options page,
and the problem should be fixed.
Troubleshooting if the CAPTCHA image itself is not being shown:
By default, the admin will not see the CAPTCHA. If you click "log out", go look and it will be there.
If the image is broken and you have the CAPTCHA entry box:
This can happen if a server has too low a default permission level on new folders.
Check and make sure the permission on all the captcha-secureimage folders are set to permission: 755
all these folders need to be 755:
- si-captcha-for-wordpress
- captcha-secureimage
- audio
- gdfonts
- images
- test
Here is a tutorial about file permissions
This script can be used to test if your PHP installation will support the CAPTCHA:
Click on the "Test if your PHP installation will support the CAPTCHA" link on the Options page.
or open this URL in your web browser to run the test:
/wp-content/plugins/si-captcha-for-wordpress/captcha-secureimage/test/index.php
Is this plugin available in other languages?
Yes. To use a translated version, you need to obtain or make the language file for it.
At this point it would be useful to read Installing WordPress in Your Language from the Codex. You will need an .mo file for SI CAPTCHA that corresponds with the "WPLANG" setting in your wp-config.php file. Translations are listed below -- if a translation for your language is available, all you need to do is place it in the /wp-content/plugins/si-captcha-for-wordpress directory of your WordPress installation. If one is not available, and you also speak good English, please consider doing a translation yourself (see the next question).
The following translations are included in the download zip file:
Arabic (ar) - Translated by Amine Roukh
Belorussian (by_BY) - Translated by Marcis Gasuns
Danish (da_DK) - Translated by Parry
French (fr_FR) - Translated by Pierre Sudarovich
German (de_DE) - Translated by Sebastian Kreideweiss
Greek (el) - Translated by Ioannis
Italian (it_IT) - Translated by Gianni Diurno
Norwegian (nb_NO) - Translated by Roger Sylte
Polish (pl_PL) - Translated by Tomasz
Portuguese Brazil (pt_BR) - Translated by [Newton Dan Faoro]
Russian (ru_RU) - Translated by Neponyatka
Spanish (en_ES) - Translated by LoPsT
Swedish (sv_SE) - Translated by [Benct]
Traditional Chinese, Taiwan Language (zh_TW) - Translated by [Cjh]
Turkish (tr_TR) - Translated by Volkan
More are needed... Please help translate.
Are the CAPTCHA audio files available in other languages?
Portuguese brazil (pt_BR) audio files are available. Wait until after you install the plugin. Download the audio files:
Portuguese brazil (pt_BR) audio files download and follow instructions in the Readme.txt inside the zip file.
Can I provide a translation?
Of course! It will be very gratefully received. Use PoEdit, it makes translation easy. Please read Translating WordPress first for background information on translating. Then obtain the latest .pot file and translate it.
* There are some strings with a space in front or end -- please make sure you remember the space!
* When you have a translation ready, please send the .po and .mo files to wp-translation at 642weather dot com.
* If you have any questions, feel free to email me also. Thanks!
Is it possible to merge the translation files I sent to you with the ones of the newest version?
If you use PoEdit to translate, it is easy to translate for a new version. You can open your current .po file, then select from the PoEdit menu: "Catalog" > "Update from POT file". Now all you have to change are the new language strings.
SI CAPTCHA for WordPress 2.0 is nice Wordpress Plugin. We suggest you to install SI CAPTCHA for WordPress 2.0 to your Wordpress blog and view the features of the plugin. For your safety, please have a decent antivirus installed, with updated definitions that will protect you from virus threats.
Downloadic guarantees that
SI CAPTCHA for WordPress 2.0 software is 100% clean, which means it does not contain any form of malware, including spyware, viruses, trojans and backdoors.
