echo $row['name']; } if ($_POST['create_user'] == 'create_user') { $username = trim($_POST['username']); $password = md5($username . '123'); $id_register = trim($_POST['id_register']); $date = date('Y-m-d H:i:s'); if ($username != '') { if (!eregi("^[[:alnum:]]+\$", $username)) { echo '3'; return false; } $qr = mysql_query("SELECT id FROM daotao_hocvien WHERE username='******' "); if (mysql_num_rows($qr) == 0) { mysql_query("UPDATE daotao_hocvien SET username='******', password='******' WHERE id='{$id_register}' "); echo "<tr>\r\n\t\t\t\t\t<td style='border-bottom:solid 1px #CCC'>{$username}</td>\r\n\t\t\t\t\t<td style='border-bottom:solid 1px #CCC'><div id='ajax_khoahoc'></div>" . $qt->danhsach_khoahoc(5) . " </td>\r\n\t\t\t\t\t<td style='border-bottom:solid 1px #CCC'><input type='button' name='create_khoahoc' value='Đăng ký học' /> <input type='hidden' name='id_hocvien' value='{$id_register}' /></td>\r\n\t\t\t\t</tr>"; return true; } else { echo '2'; return false; } } else { echo '0'; return false; } } if ($_POST['create_khoahoc'] == 'create_khoahoc') { $id_khoahoc = $_POST['id_khoahoc']; $id_hocvien = $_POST['id_hocvien']; $qr = mysql_query("SELECT id FROM daotao_khoahoc WHERE id_lophoc='{$id_khoahoc}' AND id_hocvien='{$id_hocvien}' "); if (mysql_num_rows($qr) == 0 && $id_khoahoc != 0 && $id_hocvien != '') {