jQuery validation & submit to PHP file

jQuery validation & submit to PHP file

I've got something like that:

  1. $(function() {
    $("#form_order").validate({
    rules: {
    fname: {
    required: true,
    minlength: 2
    },
    lname: {
    required: true,
    minlength: 2
    },
    }
    });
    });














And how to send both values to php file if inputs are valid? I've got something like that but I don't know how to connect these two codes to work together.

  1. $("form#form_order").submit(function() { 
      var fname = $('#fname').attr('value');  
      var lname = $('#lname').attr('value');  
    $.ajax({
    type: "POST",
    url: "ajax.php",
    data: "fname="+ fname +"& lname="+ lname,
    success: function(){
    $('div#success').fadeIn();
    }
    });
    return false;
    });