The other day I started searching Google for possible solutions. One option was to find a Captcha library that was more difficult to crack than the one I am currently using. In the search I came across a list of the Top 10 Worst Captchas. These are were all a little extreme, but would definitely do the job. I doubt I would get any comments with some of these.

After searching for a while I settled on reCaptcha which is a project at Carnegie Mellon University. They have libraries for the popular web languages and some plugins for applications. One of them is for WordPress which I installed earlier today. A quick blurb about reCaptcha project:

Over 60 million CAPTCHAs are solved every day by people around the world. reCAPTCHA channels this human effort into helping to digitize books from the Internet Archive. When you solve a reCAPTCHA, you help preserve literature by deciphering a word that was not readable by computers.

I’ll let you know if I have any issues with the PHP version. From the documentation it is pretty straight forward and I don’t have to deal with the image libraries anymore like I had to with my previous Captcha library.

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In PHP   

<?PHP

echo "Hello World!";

?>  

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In C:

#include <stdio.h>  

main(){
    printf ("Hello World!n");
}  

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In C++:  

#include <iostream.h>  

main(){
    cout << "Hello World! ";
}  

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In Pascal:  

Program Hello (Input, Output);  

Begin
  Writeln ('Hello World!');
End.  

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In Ada:
with Text_Io; use Text_Io;  

procedure hello is
begin
    put ("Hello world!");
end hello;

There is a project out there that is trying to put up examples for different languages.