ajax jquery duplicate checker error

[eluser]Corbee[/eluser]
Hi,

I tried to use validate plugin's remote parameter to check for email duplicate, but it appears that I'm not returning the correct value jquery understands

This is my html code

Code:

<input class="required email" name="email" id="email"><br/>

and here is my php code

Code:

function getemail()
    {
        $this->db->select('Email');
        $q = $this->db->post('client');
        
        if ($q->num_rows() > 0)
        {
            foreach ($q->result_array() as $row)
            {
                $data[] = $row;
            }
            $q->free_result();    
            return $data;
        }
    }

here is my ajax

Code:

$("#signupForm").validate
({
   rules:
   {
        email:
        {
             remote:
             {
                 url: "<?php echo base_url();?>index.php/register/emailchecker",    
                 type: "post"
             }
         },
    message:
    {
         email:
         {
             message:
             {
                remote: "Email already exists"
             }
         }

Where did I do wrong?

Thanks