Question

my queries are :

   $select_userid_query = execute_pdo_query("SELECT user_id FROM users WHERE username='" . $_COOKIE['username'] . "'");

   if ($select_userid_query == 0){

    execute_pdo_query("INSERT INTO user_status
    (user_id,last_activity_time) VALUES
    ((SELECT user_id FROM users WHERE username='" . $_COOKIE['username'] . "'),NOW())"
     , array($user_id, $last_activity_time));

   }
    else{
        execute_pdo_query("UPDATE user_status SET user_id = (SELECT user_id FROM users WHERE username='" . $_COOKIE['username'] . "'),last_activity_time= NOW()", array($user_id, $last_activity_time));
        }

i want to verify if there is a record in the database and if not insert and if there’s just update the time of that with the new NOW()

any ideas where’s my error in the syntax?

Answer 1

Instead of this you can use this single query if you have a user_id as unique:

INSERT INTO user_status
(
 user_id, last_activity_time
)
(
    SELECT user_id, NOW()
    FROM users
    WHERE username='" . $_COOKIE['username'] . "'"
) ON DUPLICATE KEY UPDATE last_activity_time = NOW();