$conn=mysql_connect("localhost","root","root")or dir("連接失敗");
mysql_select_db("tb_demo",$conn);
$sql="select * from news";
$res=mysql_query($sql);
header("content-type:text/html;charset=utf-8");
echo "<h1>新聞列表</h1>";
echo "<a href='add_news.html'>添加新聞</a><hr/>";
echo "<table>";
echo "<tr><td>id</td><td>標(biāo)題</td><td>查看詳情</td><td>修改新聞</td></tr>";
while($row=mysql_fetch_assoc($res)){
 echo "<tr><td>{$row['id']}</td><td>{$row['title']}</td><td><a href='show_new.php/look-id-{$row['id']}.shtml'>查看詳情</a></td><td><a href='#'>修改頁(yè)面</a></td></tr>";
}
//上面的紅色的地址本來(lái)該是show_news.php?act=look&id={$row['id']}
echo "</table>";
//關(guān)閉資源
mysql_free_result($res);
mysql_close($conn);

header("Content-type:text/html;charset=utf-8");
$conn=mysql_connect("localhost","root","root");
mysql_select_db("tb_demo",$conn);
mysql_query("set names utf8");
 $pa = $_SERVER['PATH_INFO'];
//$pa  打印出來(lái)的值是  /look-id-1.html
//通過(guò)正則表達(dá)式匹配獲取的url地址
if(preg_match('/^\/(look)-(id)-([\d])\.shtml$/',$pa,$arr)){
 $act = $arr[1]; //這個(gè)是請(qǐng)求的look方法
 $id = $arr[3];  //這個(gè)是獲取的id 值
 $sql="select * from news  where id= $id";
 $res=mysql_query($sql);
 $res = mysql_fetch_assoc($res);
 echo $res['title']."<hr>".$res['content'];
}else{
 echo "url地址不合法";
}
mysql_close($conn);