PHP captcha problem

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PHP captcha problem

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All Forums >> Web Development >> ASP, PHP, and Database >> PHP captcha problem

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craigj1303 Posts: 46 Joined: 5/16/2007 Status: offline	PHP captcha problem - 3/27/2009 9:58:18 Open Source PHP Captcha problem I have been receiving copious amounts of SPAM through my "request a quote" form. Having investigated prevention techniques I found an Open Source PHP Captcha solution at www.phpcaptcha.org. I followed the instructions and implemented in to my code but although the captcha image is visible I am still able to submit the form without entering anything. The form also still submits when I deliberately enter a completely incorrect code! My request a quote form can be found at http://www.digitalcolours.co.uk/estimator.html I have uploaded the code I am using for you to view simply in txt format here: http://www.digitalcolours.co.uk/estimatorhtml.txt http://www.digitalcolours.co.uk/estimator.txt If anyone can see any reason why the captcha isn't working please let me know. I have left a message on the board of the open source site but nothing has been updated on there since Aug 2008 so unsure whether I will receive a reply. Alternatively, if anyone has any "simple" way to implement a protection for my form from Spambots I would appreciate it if you can let me know! Thanks & Rgs Craig


Tailslide Posts: 6692 Joined: 5/10/2005 From: Out here on the raggedy edge Status: offline	RE: PHP captcha problem - 3/27/2009 11:41:32 Hmmm.... I'm not a PHP expert but it looks like the form's being executed before it checks for the captcha. I'd move that up above the mail bit and have it as an if {captcha stuff } else { mail stuff }. Alternatively - you could probably tweak my form to do what you want (adding the extra fields). It uses a question instead of captcha for accessibility reasons plus a honeytrap input plus it checks headers to prevent injection attacks plus it generates a unique token and matches that to the one in the form. I haven't had a single form spam since I started using it. You can either have the errors spit out at the top or next to the labels - currently it's a bit of a mix of the two - it repeats the empty field errors next to the label and the incorrect question error above the form. Attachment (1) _____________________________ Little Blue Plane Web Design \| Land Rover project (in reply to craigj1303)


craigj1303 Posts: 46 Joined: 5/16/2007 Status: offline	RE: PHP captcha problem - 4/1/2009 13:31:16 I like the look of your protection Tailslide, the trouble is that I am no expert on PHP either. I downloaded your contactform.txt file and had a look. The way my form works is that I have the form contained in a .html page which when submitted goes to a .php page for processing. I don't understand why you have all that PHP in the same page as your contact form when the action script is in a seperate file called contact-form.php? When I look at the source code from your contact page the form action is contactform.html. I also thought the action had to be a php file? (in reply to Tailslide)


Tailslide Posts: 6692 Joined: 5/10/2005 From: Out here on the raggedy edge Status: offline	RE: PHP captcha problem - 4/1/2009 13:37:49 It processes the lot on the same page - no need for another page. Once processed sucessfully it goes to /thanks.html (in this case - just change as appropriate). Just change the stuff around the form - the rest of the page e.g. the head section etc. _____________________________ Little Blue Plane Web Design \| Land Rover project (in reply to craigj1303)

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