try
{
$sql = "SELECT username, email FROM user
WHERE username=:uname OR email=:uemail" ;
$select_stmt = $koneksi -> prepare($sql);
$arr = array(':uname'=>$username, ':uemail'=>$email);
$select_stmt->bind_param("ss", $arr[':uname'], $arr[':uemail']);
$select_stmt->execute();
$row=$select_stmt->get_result()->fetch_assoc();
error array and bind_param Fatal error: Uncaught Error: Call to a member function bind_param() on bool in C:\xampp\htdocs\UTS_DILA\register.php:35 Stack trace: #0 {main} thrown in C:\xampp\htdocs\UTS_DILA\register.php on line 35