How do i create an email this page form for my website?

I was looking on how to create a recommend this page form that sends the given pages URL address and where the user can enter their email address and a message however long and a single email address or multiple addresses where the user wants to send the recommend this page to.

I was wondering if anyone knew what code I could use. I am currently using PHP as my s开发者_Python百科erver side language.

I wanna know how to code my own form?

http://www.addthis.com/ offers a free service we've used with clients a couple of times

That's a pretty broad question but essentially to do this with PHP, you will need to be familiar with 3 things:

$_POST array in PHP - holds all form values on the page posted back to the server

mail() PHP function

CAPTCHA implementation for verifying real users

Updated for Frank's spammer comment.

I'd recommend checking with your web host first. GoDaddy, for instance, no longer allows your script to grab the form-submitter's email as the sending email. Treats the message as spam and doesn't send it though your submitter will may get your success message.

Another option, though I haven't tried myself, is online forms at Google Docs: http://www.google.com/google-d-s/forms/