“cara ckeck email itu hadir di databse di mysqli” Kode Jawaban

cara ckeck email itu hadir di databse di mysqli

$select = mysqli_query($connectionID, "SELECT `email` FROM `game` WHERE `email` = '".$_POST['email']."'") or exit(mysqli_error($connectionID));
if(mysqli_num_rows($select)) {
    exit('This email is already being used');
}