Auto-populating a form from an e-mail link

I'm looking to send out emails containing links to sites that dynamically pre-populate the form fields.

I've been using form field ID's with the link like so

but it doesn't seem to be working, any ideas?

Solution

Since you're doing this in PHP, you'd need something like ...

if (isset($_GET['email'])) {
    $email = $_GET['email'];
}
else {
    $email = '';
}

...

<input type="text" name="email" value="'.$email.'">

Basically, you need to pull in the get variable to prepopulate the form.