Remove values from array onclick without page refresh

I have a one form and onclick i want to remove image id from array without page refresh and after submit form i will update it in the DB.

I am using following code for this but no any success.

PHP Code:-

$total = count($oldimage);
                    //print_r($oldimage);
                    for($i=0;$i<$total;$i++)
                    {
                        $fimgsql="select * from cc_tbl_img_vid_upload where id='$oldimage[$i]'";
                        $gimgname=mysqli_query($db,$fimgsql) or die('Error');
                        $rw=mysqli_fetch_assoc($gimgname);
                        ?><b id="rm<?=$i?>">Remove<?=$rw['upload_url']?></b><br/><br/>
                            <script>$( "#rm<?=$i?>" ).click(function() {
                                <?php unset($oldimage[$i]);?>
                                alert(<?php echo $oldimage[$i]; ?>);
                                $( "#rm<?=$i?>" ).hide();
                            });</script>
                        <?php
                    }
                        sort($oldimage);
                        $oldimage=implode(',',$oldimage);