JQuery remote validation not working - php

Question

I had a registration form which i added a JQuery validate plugin remote validation in. The purpose of the remote validation is to check if the email/and username entered by the user already exists in my database(i.e is already in use), and will return an error message if it is.The form was working before i added the remote validation.
Now, i am unable to submit the form even when all the data i've entered is correct, and to add insult to injury, no error messages appear when i enter an email that already exists in my database.
My JQuery code:
$(document).ready(function(){
<!--AJAX Call to retrieve type & subtype of industries-->
$("#type").load("getregtype.php");
$('#type').change(function(){
var type=$('#type').val();
$('#subtype').load('getregsubtype.php?type='+type);
});
<!--End of AJAX Call -->
<!--JQuery validation of registration form-->
<!--Set default message for 'equalTo' errors-->
$.extend($.validator.messages, { equalTo: "The values you entered do not match." });
$("#regform").validate({
// Specify the validation rules
rules: {
username: "required",
password: {
required:true,
minlength:6,
},
cpassword: {
required: true,
minlength: 6,
equalTo: "#password"
},
email: {
required: true,
email: true,
remote:"emailcheck.php"
},
cemail: {
required: true,
email: true,
equalTo:"#email"
},
type: {
required: true
},
subtype: {
required: true
},
name: "required"
},
// Specify the validation error messages
messages: {
username: "Please enter a username",
email: {
required:"Please enter an email address",
email:"Please enter a valid email address",
remote:jQuery.format("{0} is already in use")
},
cemail: {
required:"Please enter an email address",
email:"Please reenter your email address",
},
password: {
required: "Please enter a password",
minlength: "Your password must be at least 6 characters long"
},
cpassword: {
required:"Please reenter your password",
minlength: "Your password must be at least 6 characters long"
},
name: "Please enter the name of your business"
},
submitHandler: function(form) {
form.submit();
}
});
});
My PHP page that is called by remote.
<?php
include("cxn.inc");
$query=$cxn->prepare("SELECT * FROM `testdb`.`business` WHERE `Email` = :email");
$query->bindValue(":email",$_GET['email']);
$query->execute();
$count=$query->rowCount();
$mail=$_GET['email'];
print_r($mail);
echo"$count";
if($count>0)
{
echo json_encode('false');
}
else
{
echo json_encode('true');
}
?>
Things tried
print_r($mail) and echo"$count"; both return the correct value.I've also tried
echo json_encode(true);
as well as
return true;
EDIT
Some more things i've tried.
echo true;
I've also tried to pass in the value of the email directly through the url, on the off chance that the value was not being passed to 'emailcheck.php' by doing
email: {
required: true,
email: true,
remote:"emailcheck.php?email=test#test.com"
},
but my form still doesn't work.
I appreciate any insight to my problem.
Thanks!

Answer 1

Your PHP script expects a GET parameter with name email. Just to eliminate the possibilities of errors here, you can set that explicitly in the jQuery code :
rules: {
/* Code skipped ... */
email: {
required: true,
email: true,
type: "get",
remote:"emailcheck.php"
data: {
email: function() {
return $("#email").val();
}
}
},
/* ... */
Make sure that $('#email') really matches your form input.
You can also check the response with Firebug or an equivalent tool (just hit F12 on your browser window and see what comes up), you might want to ensure that the mimetype of the response is application/json.

Answer 2

First of all check js error in your console, if nothing is wrong check also what your script send and what he receive from php

Answer 3

remote: {
url: "check-email.php",
type: "post",
data: {
email: function() {
return $("[name='email']").val();
}
}
}
and from the PHP file check-email.php just echo true or false like this:
echo 'false';
or
echo 'true';
not echo false; or echo true;
!!!