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小弟初学PHP。问下表单的提交有关问题

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Release： 2016-06-13 10:11:16
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小弟初学PHP。。。。。问下表单的提交问题
$connec=mysql_connect("localhost","root","vertrigo") or die("不能连接数据库服务器： ".mysql_error()); 
mysql_select_db("data",$connec) or die ("不能选择数据库: ".mysql_error()); 
mysql_query("set names 'utf8'");
?>
if($_POST["id"] and $_POST["action"]=="del")
{
$sql="delete from class where id=$_POST[id]";
mysql_query($sql,$connec);
echo("");
}
?>



 
 
 
 
 
 
$sql="select * from class order by ID desc";
$conn=mysql_query($sql,$connec);
while($rs=mysql_fetch_array($conn)){ 
?>
 
 
 
 
 
 
  

}
?>
ID classtitle classurl 操作
删除


老是有错误。。。。

想请问下如何判断form提交的动作？

还有，这样做不安全。如何做能有安全性？谢谢。

------解决方案--------------------
$_POST[id] 改为 $_GET[id]
------解决方案--------------------
报什么错呢？

判断用户类型，是否登录，就是最简易的安全检查。
------解决方案--------------------
删除
表单提交里面最常见的是提交之类，像超连接是用GET提交的。
把
去掉，然后用$_GET接收。
------解决方案--------------------
要对参数进行基本判断，判断是否为数值，判断传过来是否为空。

一般没什么问题。
Related labels：
gt lt mysql nbsp quot
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