Update query with PDO and MySQL

Question

Im trying to write an update query with PDO only I cant get my code to execute?

try {
 $conn = new PDO(\"mysql:host=$hostdb; dbname=$namedb\", $userdb, $pass         


        

Answer 1

1. Your UPDATE syntax is wrong
2. You probably meant to update a row not all of them so you have to use WHERE clause to target your specific row

Change

UPDATE `access_users`   
      (`contact_first_name`,`contact_surname`,`contact_email`,`telephone`) 
      VALUES (:firstname, :surname, :telephone, :email)

to

UPDATE `access_users`   
   SET `contact_first_name` = :firstname,
       `contact_surname` = :surname,
       `contact_email` = :email,
       `telephone` = :telephone 
 WHERE `user_id` = :user_id -- you probably have some sort of id