sqlsrv PHP返回必须声明标量变量“@ P1”

Question

so i'm trying in PHP to insert new members into a sql database with sqlsrv. we had a facebook login working BUT that now also doesn't work anymore as the query reaches the database, executes it and returns

"Must declare the scalar variable "@P1"

$NewMemberRegisterSQL = "INSERT INTO dbo.members (MemberName, MemberPassword, MemberEmail) VALUES(?,?,?)";
            $paramsNewMember = array($_POST['register-username'], $hashedPass, $_POST['register-email']);
            $InsertResult = sqlsrv_query( $conn, $NewMemberRegisterSQL, $paramsNewMember);

The Database exists of MemberID which is an auto increment, FacebookID which is allowed to be null,MemberName which is just the username,MemberPassword well guess what this one is, and Memberemail. FacebookID,Memberpassword and memberemail are allowed to be NULL.