Need a secure contact form script (php5)

[Web-Design-Guy]

Can anyone help me out?

Ideally, rather than CAPTCHA, it will ask maths questions or similar.

Here's hoping.

[wige]

Microsoft actually created a pretty interesting CAPTCHA alternative, in conjunction with petfinder.com. The system displays images of cats and dogs, and asks the user to select only the pictures of the cats. You can get more information here: MSR Asirra: A Human Interactive Proof

[Tech Manager]

Originally Posted by Web-Design-Guy

Can anyone help me out?

Ideally, rather than CAPTCHA, it will ask maths questions or similar.

Here's hoping.

Here's a simple script that will produce your math questions:

Make sure you have sessions enabled.

srand ((double) microtime( )*1000000);
$_SESSION['human_check'] = rand(0,999);
$question = ($_SESSION['human_check'] - 1);
$question2 =  "What is the next number after the number " . $question . "?";

Add the question to your form:

 
<label /><?php echo $question2; ?> <input type="text" name="human_answer" size="3" maxlength="3" value="0" />

Compare the response with your $_SESSION['human_check'] variable.

 
if($_SESSION['human_check'] == $_POST['human_answer']) {
   $g = TRUE;
 } else {
   $g = FALSE;
   $message[] = "You failed to enter the correct number into the number field.";
   }

Validate the rest of your variables and you're set.

[Web-Design-Guy]

I really appreciate it Tech Manager.

I'm trying to marry your input with an existing script but I'm not getting the comparison check to work. Everything else seems to function.

I'm a complete php noob - would you mind if I PM you?

[Tech Manager]

Originally Posted by Web-Design-Guy

I really appreciate it Tech Manager.

I'm trying to marry your input with an existing script but I'm not getting the comparison check to work. Everything else seems to function.

I'm a complete php noob - would you mind if I PM you?

I don't mind at all.