Question

This query is intended to update the inUse variable if the result of a form input, e.g. $_POST[‘eventID’] matches the eventID in the database, thus changing the inUse value for that event to 1, and all others to zero.

mysql_query("UPDATE events SET inUse=IF('$_POST['eventID']' = eventID, 1, 0)");

The database requires an integer, however I am concerned as I’ve dumped the value for $_POST[‘eventID’] which is showing up as a string. I’ve tried using intval and int to no avail.

Or is the a problem in my query syntax?

Thanks 🙂

Answer 1

Try this:

UPDATE events SET
inUse = ('$_POST['eventID']' = eventID);

This assumes that inUse is a boolean (which in mysql is implemented as a TINYINT with values either 1 or 0, but whatever the case, mysql converts between boolean/int values just fine)