Captcha Code - to avoid spam mails,
we have used the concept of captcha and gdlibrary functions
through which we create a unique code as image every
time the page is refreshed. User is asked to enter that
code in the text form before he submits the form. If
the code entered is wrong, the user's request wont be
sent. 
Implementation of Captcha – in the
registration form, we have written the following code.If
the code entered is wrong,it will show “wrong verification
code” in a red bar along the text box.
You will learn more about PHP Scripts
using javascript and live form free download on next
page
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