[maxers]

I'm using PHP and Ajax to implement some forms. I got the PHP part working but am having a hard time on the Ajax part.

I have a login form that checks for the user's email address.

Here's the PHP code to check if an email address exists in the db.

//connect to db

//query db

 if(mysql_num_rows($result) > 0) {
    //echo "true";  //email exists in db redirect user to logged in page
    header ("loggedin.html");
    exit ();
  } else {
    echo "false";   //email doesn't exist in db show user registration form
 } 

If email exists in db I redirect the user to the logged in page. If it doesn't exist I want them to fill out a registration form. But, I want to display the registration form in a jQuery lightbox.

1. Can I have both (login and registration forms) on the same page? I would set the registration form to display none then on submit if the email doesn't exist I would then call the jquery lightbox to open the registration form. Is this possible?

2. How do I pass that "email doesn't exist" to Ajax? I'm not sure how PHP/Ajax interact. This is where I'm stuck. Any help is appreciated.

Here's the JS:

$(document).ready(function(){
    $.ajax({
      type: "POST",
      url: "index.php", //  the page where both my login and registration form live?
      data: value,
      success: function()
      {
         // not sure what to do here
      }
  });
 });

[web_loone08]

Here is the jQuery documentation for your jQuery function.

http://api.jquery.com/jQuery.ajax/

You should be able to send a variable back from your responseText (from your PHP page) to either display the login lightbox or the registration lightbox.

If you do not know what I am talking about, if your an AJAX novice; then you might want to read up on how AJAX works and familiarize yourself with some of the basic syntax.