form enctype="multipart/form-data">
 <input type="file" name="myimage" id="myimage" onchange="preview_image(event)">
 <input type="submit" name="submit_image" id="submit" value="Upload">
 <img id="output_image"/>
</form>
</div>

<script>
$("#submit").click(function() {

    var myimage = $("#myimage").val();

    $.ajax ({
        url: 'getdata.php',
        type: 'POST',
        dataType: 'json',
        data: {'myimage': myimage},
    });

});
</script>

<?php
  $con = mysqli_connect("localhost","root","","root");
?>
<?php
$myimage = $_GET['myimage'];

$imagename = $_FILES["myimage"]["name"];

$imagetmp= addslashes(file_get_contents($_FILES['imagename']['tmp_name']));

$stmt = mysqli_query($con,"INSERT INTO tbl_images(`name`) VALUES('$imagename')");
?>