PHP form without captcha


Back to programming.


moderator    (2009-03-31)

moderator

PHP form without captcha

How to make a form without a complete captcha script ?  Many are free but it is always annoying for users, here are some ways & tips !

First you may verify that users take at least several seconds to type a text in your form, bots don't take time & fill most forms in microseconds :

<input type="hidden" name="verif" value="<?  print dechex(time()); ?>" />


Then just check the result :

if (time() < hexdec(@$_POST['verif']) + 2)
{
echo "You can't validate the form in less than 2 seconds.";
}


Then you may use a hidden field but without the HIDDEN type that is known by most robots already. This one may help you to avoid many spammers bots (you should use as name for the field something quite common as "topic" or "message") :

<input name="topic" type="text" size="30" style="display:none">


Now how many spams do you have on your forum ?


See also


ficgs
More websites

You must register to see these links, as this is a collaborative page, then you may change the order of the links by clicking the icons before the titles.



admin
Other websites

The following links might be less relevant, please change their ranks if you find them useful.


 formfields - php form, html forms, form generator, form script, form builder, php forms
formfields > index.
  1. FORMfields is a PHP framework for building dynamic
 Free PHP CAPTCHA Scripts (thefreecountry.com)
thefreecountry

Should You Choose a Linux or a Windows Web Hosting Package? Is There...
How to Add Google Advertisements (Google AdSense) to Your Blog or...

 PHP Captcha Security
white hat web design > articles

// Insert your code for showing an error message...
Due to a security bug in the script please ensure you are using the...

 PHP Form Processors | Scripts & Programs | Hot Scripts
hotscripts > category

email to support international characters Cool New Success / Fail...
submissions in a database, instantly providing you and your clients...

 QuickForm Captcha without image !! - Codewalkers
forums.codewalkers > pear packages 47/quickform captcha without image 849663

We cover the world of technology like no one else,...
Warburton's the largest independently owned bakery in the UK faced a...

 PHP Contact form with image code verification
thewebhelp

 Safer Contact Forms Without CAPTCHA's
15daysofjquery > examples/contact forms

Wrap It Up: Lazy Man's HTML Generation with...
Edit In Place with AJAX Using jQuery Javascript...

 Create an AJAX Powered Contact Form with PHP and CAPTCHA | Securimage PHP Captcha
phpcaptcha > documentation

to define what script the form data will be sent to and the...
This is a beginner's tutorial for creating an AJAX powered web...

 Combating Spam Without Captchas and PHP « Webdoodles
webdoodles.wordpress > 2007/03/22/combating spam without captchas and

WPGroHo = { data: {}, renderers: {}, syncProfileData:...

 WWW FAQs: How do I add a captcha to my web form?
boutell > newfaq/creating/captcha

 Form Captcha
hotdreamweaver > form captcha

When the verification fails, the user must be returned to a page...
The text to be identified will be generated from a random font size...

 PHP CAPTCHA, image validation example :: Free PHP Scripts and Classes
finalwebsites > snippets.

 How to implement CAPTCHAs without images at Xaprb
xaprb > blog/2006/01/28/captchas done better

Then, just before the SUBMIT button for the form,...
My unorthodox CAPTCHA blocked thousands of spam comments every week...
if ( !is_numeric($comment_captcha_idx) || !$comment_captcha ||...

 Code Examples -> Securing Web Forms with Simple PHP-CAPTCHA (Completely Automated Public Turing test to tell Computers and Humans Apart)
weberdev > get example 4439

Securing Web Forms with Simple PHP-CAPTCHA (Completely Automated...
Start typing to search for PHP and MySQL Code Snippets and...
Antispoof - a class to help prevent people hi-jacking and misusing...

 How to Create CAPTCHA Protection using PHP and AJAX
webcheatsheet

//Start the session so we can store what the security code actually...
//We don't need a 32 character long string so we trim it down to...

 Secure PHP Form Mailer Script · Dagon Design
dagondesign > articles/secure

Information on the WordPress plugin version of this...
type=text|class=fmtext|label=Name|fieldname=fm_name|max=100|req=true...

 Stop form SPAM without using Captcha
myphpform > form spam.

Make sure form e-mails are not blocked by your SPAM...
This way you physically separate the access code from...

 Creating a CAPTCHA with PHP :: PHP Tutorials :: PHP Form.net
phpform > captcha.

thanks for this code ! Just how we can improve the security of this...
Thanks a bunch for this script, its really helpful!...

 Captcha Creator - PHP Script Package
captchacreator

 CodeProject: Securing Web Forms with Simple PHP-CAPTCHA. Free source code and programming help
codeproject > KB/HTML/Web Security.aspx

Copyright 2006 by sujithfem Everything else Copyright...
0) { var queryString =...

 Captcha form mail script in php free downloadable version | SendBlaster | Email broadcaster
sendblaster > free bulk emailer download/captcha form mail double optin

Create your own permission based email list using Php Captcha Form...

 Visual and Audio PHP CAPTCHA Generation Class - Ed Eliot
ejeliot > pages/2

 Anti Spam solutions without Captcha
facileforms > forum/index.

 PHP Formmail / Form to eMail Script with Captcha, Multiple Pages, File Attachments, Uploads and More
interactive scripts

 Form processor
tools4php > captcha

 Web Forms at WMU
wmich > webadmin/forms/examples

modifications to the files as needed for your department's...

 PHP Anti-Spam Captcha Script to Secure Form
askapache > security

 www.wysiwygwebbuilder.com :: View topic - Use Captcha as Stand-Alone-Verification for an email form
wysiwygwebbuilder > forum/viewtopic.

 Creating a PHP Captcha | PHP and Web Development Blog
ebrueggeman > blog

 captcha [Wiki:NucleusCMS]
wakka.xiffy > captcha

Comment forms (when presented to unregistered site...
Member contact forms (when presented to unregistered site...
Extract the files and upload them into the nucleus plugin directory...

 Captcha PHP | freshmeat.net
freshmeat > projects/captcha

 Free captcha php Download - captcha php Script Software
script.wareseeker > free captcha

var pageOptions = { 'pubId' : 'pub-8098918000470057', 'channel' :...
7) { alert('can not compare more than 8...

 Simple antispam for HTML forms without captcha | fosk.it! 2.0
fosk > simple antispam for html forms without captcha

How to bypass firewalls or captive portals with...
Dell Mini 9 USB pendrive recovery from failed BIOS...
Booka Shade – body language brynjar amp mgl remix lulu rouge...

 How To add BotDetect CAPTCHA protection to PHP forms
captcha > doc

helper script to dynamically add the CAPTCHA sound object to the...
files are usually handled by Windows Media Player for IE users, and...

 Linux.com :: Three ways to test Web form input with a CAPTCHA
linux > feature/131925

 How to implement CAPTCHA with PHP
encaps > software

2) Add the following line at the top of the page where you need to...
3) Add the following line to check whether the CAPTCHA string entered...

 Random validation (CAPTCHA) image [php] [form] [gd]
snippets.dzone > posts/show/1351

Use this script in your contact form, for you whois query tool or...

 Contact Form With Captcha - PHP Code Snippet
hawkee > snippet/4294

Cool, but you might want to mention that this requires GD and...

 PHP Captcha Script for Comment Forms & Registration Forms | Web Design and Development Blog
itmdesign > blog/2009/02

 Download PHP Random validation (CAPTCHA) image - Random validation (CAPTCHA) image - Use this script in your contact form, for you whois query tool ...
webscripts.softpedia > script/Snippets



Response  
 

Guest name   (option)     Register
Please sum : 9185 + four  




Trackbacks : If you talked about this article in your blog or website, you may instantly get a backlink 
There's no trackback at the moment.