mtb_crm_asp/editTag.php

<?php
require_once 'conn.php';
checkLogin();

$originaltag = $_GET['originaltag'] ?? '';
$newtag = $_GET['newtag'] ?? '';

$originaltag = textEncode(urldecode($originaltag));
$newtag = textEncode(urldecode($newtag));

$sql = "UPDATE tagtable SET tagName='" . $conn->real_escape_string($newtag) . "' 
        WHERE tagName='" . $conn->real_escape_string($originaltag) . "' 
        AND employeeId=" . $_SESSION['employee_id'];

$conn->query($sql);
?>