Us security offered to the form by using the picture
If you want to prevent your forms being misused, you can do so by pasting the image with the number into your form. See the pictures below this text. The number on the picture, the person filling out your form to overwrite in the designated field in the form. The accuracy of the code-the picture of us subsequently verified.
In the event that you are not fit to your presentation we created images, you can create similar images themselves. The condition, however, is that the image you created will contain the same code number as they contain pictures below. Image created by the same name (e.g., rand01_01. gif).
If you want to write a fully custom system, PHP has the tools available for working with pictures: http://php.net/manual/en/ref.image.php
Sample HTML code:
Assuming that I want to use the first image rand01_01. gif, I must add the following code to the form's code:
<input type="hidden" name="CheckCodePicture" value="1" />
<input type="text" name="CheckCode" />
<img src="rand01_01.gif" />
Protect form by filling in the numbers from the image
List of images:
| Name: | picture: | value: | Name: | image: | value: | |
|---|---|---|---|---|---|---|
| rand01_01 .gif |  | 1 | rand01_02 .gif |  | 1 | |
| rand02_01 .gif |  | 2 | rand02_02 .gif |  | 2 | |
| rand03_01 .gif |  | 3 | rand03_02 .gif |  | 3 | |
| rand04_01 .gif |  | 4 | rand04_02 .gif |  | 4 | |
| rand05_01 .gif |  | 2 | rand05_02 .gif |  | 5 | |
| rand06_01 .gif |  | 6 | rand06_02 .gif |  | 6 | |
| rand07_01 .gif |  | 7 | rand07_02 .gif |  | 7 | |
| rand08_01 .gif |  | 8 | rand08_02 .gif |  | 8 | |
| rand09_01 .gif |  | 9 | rand09_02 .gif |  | 9 | |
| rand10_01 .gif |  | 10 | rand10_02 .gif |  | 10 |