Question

I’ve got the following query:

$query = "SELECT * FROM PAS WHERE KLANT_NR = (SELECT KLANT_NR FROM klanten WHERE VOORNAAM = ? AND ACHTERNAAM = ?)";

$stmt = $mysqli->prepare($query)){
        $stmt->bind_param("ss", $klantVoornaam, $klantAchternaam);

This however generates the following error:

 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 '? AND ACHTERNAAM = ?)' at line 1

The two variables are $_POST strings..

Strange thing is, if i add two strings in the normal query instead of the ‘?’s, the query works fine. I can’t figure out why the prepared statement doesn’t work then…

Answer 1

I found the awnser myself, it was related to an other $query i placed below..

stupid mistake, thanks for the help though.