Math CAPTCHA: CAPTCHA validation using math operation images

<?PHP
//README

/*
MathCha License
MathCha  - the Mathematical Captcha
GNU General Public License 2011 MathchaTeamPBK2011

To Obtain more information for this component please send an email to certain address below :
1. hesti06@gmail.com
2. cyntiaan@gmail.com
3. pho3_lophe@yahoo.com
4. mikha3qv9@gmail.com
5. syamsularies@ymail.com

Please Keep this license if you uses or make modifications of this component.

By fullfiing this requirement, we are able to give pemittion to use device for free.
we are able to give advices for any problem in the proccess to use the device.

===============================================================================================

This component is made to give another choice of Captcha for all of you.
This Captcha utilizable for your website.

How tu use?

Don't forget to call the session!

<?PHP
  session_start();
  //The session use for check the MathCha answer
  if( $_SESSION['security_code'] == $_POST['security_code'] && !empty($_SESSION['security_code'] ) ) {  	//if the answer is true
		echo 'Thank you! ';
		unset($_SESSION['security_code']);
   } else {			//if the answer is false
		echo 'Ups, you have provided an invalid security code! Please '
   }
?> 
  
//Then,call the MatCha like call the picture along with level change and theme change that we are served.

<img src="MathchaSecurityImages.php?difficulty=3&theme=t0" />

You are able to choose three posibilities the term of Level by change the available selection 1, 2, or 3
You able to choose 11 available themes into : t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, or t10

You can do another way to use this component.

**Hesti-Cyntia-Debora-Mikha-Syamsul**
*/
?>