mysql_query("INSERT INTO newsletter (first_name, last_name, email, birthday) VALUES ($first_name, $last_name, $email, $birthday)") or die(mysql_error());
thats my code.
You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near ' , , )' at line 1
What aborint said, or one of these values isn't set. "$first_name, $last_name, $email, $birthday"
Set Search Time - A google chrome extension. When you search only results from the past year (or set time period) are displayed. Helps tremendously when using new technologies to avoid outdated results.