<?php if(isset($_POST['deleteValues'])){
global $wpdb;
$table = $wpdb->prefix . 'addkeywords';
$where = array( 'id' => $id);
$where_format = array( '%d');
$deleteTable= $wpdb->delete( $table, $where, $where_format );
if($deleteTable){
echo '<script>alert("Done")</script>';
}else{
echo '<script>alert("Not Done")</script>';
}
}
?>
<td><form method="post" action="">
<?php if(!empty($_POST['id'])){ ?>
<?php } else { ?>
<button class="btn btn-danger" id="editValues" name="deleteValues">Delete</button>
<?php } ?>
</form></td>