function updateTags($link, $view)
{
    if ($view == 'location') {
        unset($_POST['btnUpdateLocation']);
        $name = $_POST['name'];
        $id = $_POST['id'];
        $isDowntown = $_POST['campus_' . $id];
        $active = $_POST['active'];
        $query = "UPDATE tbl_locations SET name = '{$name}', is_downtown = '{$isDowntown}', active = '{$active}' WHERE id = '{$id}'";
        echo $query;
    } else {
        unset($_POST['btnUpdateTag']);
        $queryString = array();
        foreach ($_POST as $key => $value) {
            // sanitize values
            $value = sanitizeValues($value, $link);
            if ($key == 'id') {
                $id = $value;
                unset($_POST['id']);
            } else {
                // save values to session variables
                $_SESSION[$key] = "";
                $_SESSION[$key] = $value;
                // set key name as variable, save value to this variable
                ${$key} = $value;
                //echo "$key - $value<br>";
                // add key (element/column name) and value to queryString array
                $queryString[] = "{$key} = '{$value}'";
            }
        }
        // get string from elements of queryString array
        $implodedArray = implode(', ', $queryString);
        $query = "UPDATE tbl_categories SET {$implodedArray} WHERE id = '{$id}'";
    }
    $result = mysqli_query($link, $query) or trigger_error(mysqli_error());
    return $result;
    mysqli_close($link);
}
function updateEntry($link)
{
    unset($_POST['btnUpdateEntry']);
    $queryString = array();
    foreach ($_POST as $key => $value) {
        // sanitize values
        $value = sanitizeValues($value, $link);
        // format values
        if ($key == 'contact_phonenumber') {
            $value = formatPhoneNumber($value);
        }
        if ($key == 'event_tags' || $key == 'event_categories' || $key == 'open_to') {
            $value = formatArray($value);
        }
        if ($key == 'event_startdate') {
            $value = formatStartDate($value);
        }
        if ($key == 'event_enddate') {
            $value = formatEndDate($value);
        }
        // save values to session variables
        $_SESSION[$key] = "";
        $_SESSION[$key] = $value;
        // set key name as variable, save value to this variable
        ${$key} = $value;
        //echo "$key - $value<br>";
        // add key (element/column name) and value to queryString array
        $queryString[] = "{$key} = '{$value}'";
        //var_dump($queryString);
    }
    // get string from elements of queryString array
    $implodedArray = implode(', ', $queryString);
    $query = "UPDATE tbl_entries SET {$implodedArray} WHERE id = {$_SESSION['event_id']}";
    //print_r($query);
    $result = mysqli_query($link, $query) or trigger_error(mysqli_error());
    return $result;
    mysqli_close($link);
}
                 Please correct the following fields:
                 <ul>';
     foreach ($errors as $error) {
         $result .= "<li>{$error}</li>";
     }
     $result .= '</ul>';
 } else {
     // 2.a. Process post values
     // - - - - - - - - - - - - - - - - - - - - - - - - -
     // create db query string array
     $queryString = array();
     $queryStringRpt = array();
     $weekdays = array();
     foreach ($_POST as $key => $value) {
         // sanitize values
         $value = sanitizeValues($value, $link);
         // format values
         if ($key == 'contact_phonenumber') {
             $value = formatPhoneNumber($value);
         }
         if ($key == 'event_tags' || $key == 'event_categories' || $key == 'open_to') {
             $value = formatArray($value);
         }
         if ($key == 'event_startdate' && $value) {
             $value = formatStartDate($value);
             $queryStringRpt[] = $value;
         }
         if ($key == 'event_enddate' && $value) {
             $value = formatEndDate($value);
             $queryStringRpt[] = $value;
         }