I have some doubt in json data decleration

this is my index page

    <!DOCTYPE html>
    <html>
    <head>  
      <title>insert</title>  
      <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>  
      </head> 
    <body>
    	<form id="image_form" method="post" enctype="multipart/form-data">
         <p><label>Select Image</label>
         <input type="file" name="image" id="image" /></p><br />
         <input type="hidden" name="action" id="action" value="insert" />
         <input type="hidden" name="image_id" id="image_id" />
         <input type="text" name="info" id="info" />
         <input type="submit" name="insert" id="insert" value="Insert" class="btn btn-info" />
     </form>
    </body>
    </html>
    <script>  
    $(document).ready(function(){

    $('#image_form').submit(function(event){
      event.preventDefault();
      var image_name = $('#image').val();
      if(image_name == '')
      {
       alert("Please Select Image");
       return false;
      }
      else
      {
       var extension = $('#image').val().split('.').pop().toLowerCase();
       if(jQuery.inArray(extension, ['gif','png','jpg','jpeg']) == -1)
       {
        alert("Invalid Image File");
        $('#image').val('');
        return false;
       }
       else
       {
        $.ajax({
         url:"insert_action.php",
         method:"POST",
         data:new FormData(this),
         contentType:false,
         processData:false,
         success:function(data)
         {
          alert(data);
          $('#image_form')[0].reset();
         }
        });
       }
      }
     });
    });
    </script>

this is my action page

    <?php
    //action.php
    if(isset($_POST["action"]))
    {
     $connect = mysqli_connect("localhost", "root", "", "testing");

                                              //INSERT DATA

     if($_POST["action"] == "insert")
     {
      $file = addslashes(file_get_contents($_FILES["image"]["tmp_name"]));
      $info = $_POST["info"];
      $query = "INSERT INTO tbl_images(name),info VALUES ('$file','$info')";
      if(mysqli_query($connect, $query))
      {
       echo 'Image Inserted into Database';
      }
     
     }



    }
    ?>

but info data is not stored in data base