8-1 上課範例：index.php

<?php
//error_reporting(0);
$link=@mysql_connect("localhost" , "tad0616" ,"12345");

if(!$link)  echo "資料庫連不上！";

//設定使用UTF8編碼
mysql_query("SET NAMES 'utf8'");

//選擇資料庫
mysql_select_db('tad0616');

//執行刪除
$op=isset($_REQUEST['op'])?$_REQUEST['op']:"";
$class_sn=isset($_REQUEST['class_sn'])?intval($_REQUEST['class_sn']):"";

if($op=="delete"){
  //設定SQL語法
  $sql="delete from `tncomu_class` where class_sn='{$class_sn}'";

  //執行SQL語法
  mysql_query($sql) or die("無法執行：".mysql_error());

  //執行完轉向
  header("location: index.php");
}




//設定SQL語法
$sql="select * from `tncomu_class`  order by seme desc, subject";

//執行SQL語法
$result = mysql_query($sql) or die("無法執行：".mysql_error());

$main="<table border=1>";
while($data=mysql_fetch_assoc($result)){
  $main.="
  <tr>
  <td>{$data['class_sn']}</td>
  <td>{$data['seme']}</td>
  <td>{$data['subject']}</td>
  <td>{$data['class_name']}</td>
  <td>{$data['teacher']}</td>
  <td>{$data['passwd']}</td>
  <td>{$data['access']}</td>
  <td><a href='index.php?class_sn={$data['class_sn']}&op=delete'>刪除</a> | <a href='add_class.php?class_sn={$data['class_sn']}&op=edit'>編輯</a></td>
  </tr>";
}
$main.="</table>
";

$tool="<a href='add_class.php'>新增班級</a>";

echo $tool.$main;
//mysq_fetch_row()
//mysq_fetch_array()
?>