window.alert('아이디를 입력하세요'); history.go(-1); "; } elseif (!$pw) { echo " "; } else { $sql = "select * from user where id='$id'"; $result = mysql_query($sql,$connect); $num1 = mysql_num_rows($result); $sql = "select * from user where id='$id' and pw='$pw'"; $result = mysql_query($sql,$connect); $num2 = mysql_num_rows($result); if (!$num1) { echo " "; } elseif (!$num2) { echo " "; } else { session_start(); $user = mysql_fetch_array($result); $_SESSION['userid'] = $id; $_SESSION['user_nic'] = $user[2]; echo " "; } } mysql_close($connect); ?>