Using wildcards in prepared statement - MySQLi

Question

I\'m trying to run the following query, and I\'m having trouble with the wildcard.

   function getStudents() {
        global $db;
        $users = array();
         


        

Answer 1

Parameter #2 must be a reference, not a value. Try

$param = '%' . $this->className . '%';
$query->bind_param('s', $param);