php - Redirect to index.html page from server with message -

i want traverse :

index.html(with form data) --> save_message.php(process form data) --> index.html(show success/error message)

my html code :

<script type="text/javascript">     var messageform = $('#message-form');     messageform.submit(function(event){         event.preventdefault();         var form_status = $('<div class="form_status"></div>');          $.ajax({             url: "save_message.php",             type: "post",             data: $("#message-form").serialize(),             datatype: "json",             beforesend: function(){                 messageform.prepend(form_status.html('<p><i class="fa fa-spinner fa-spin"></i> email sending...</p>').fadein());             },             success: function(data) {                 if(data.type == 'success'){                     alert("thank subscribing!");                     form_status.html('<p class="success-message">' + data.message + '</p>').delay(3000);                     $('#message-form')[0].reset();                 }else if(data.type == 'error'){                     alert("error on query!");                 }             }           });              }); </script>  <form id="message-form" name="message-form" action="save_message.php" method="post">         <div class="form-group">             <label>name *</label> <input type="text" name="full_name"                 id="full_name" class="form-control" required="required">         </div>         <div class="form-group">             <label>email *</label> <input type="email" name="email"                 id="email" class="form-control" required="required">         </div>         <div class="form-group">             <button type="submit" name="submit"                 class="btn btn-primary btn-lg" required="required">submit message</button>         </div> </form> 

and code in save_message.php file :

<?php     header('content-type: application/json');     $status = array(         'type'=>'success',         'message'=>'thank contact us. possible  contact '     );      if($_server['request_method'] == "post"){         $full_name = @trim(htmlspecialchars($_post['full_name']));          $email = @trim(htmlspecialchars($_post['email']));      }       include 'conn.php';      $sqlquery = "insert suggestion(full_name,email) values('$full_name','$email')";     echo $sqlquery;      $result = @mysql_query($sqlquery);     if(!$result){         $status = array(             'type'=>'success',             'message'=>'thank contact us. possible  contact '         );     }     echo json_encode($status);    ?> 

but not redirecting index.html page. ratheer showing bellow line in save_message.php page.

insert suggestion(full_name,email,phone,title,message,status) values('aaaa','parvej35@gmail.com','12345','aaaaaaaaaaa','sssssssss','new'){"type":"success","message":"thank contact us. possible  contact "} 

please me.