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用PHP进行MySQL删除记录操作代码_php基础

May 17, 2016 am 09:36 AM
mysql php Delete Record

首先我们新建数据显示页面view.php: 

复制代码 代码如下:

$link=mysql_connect("localhost","root","管理员密码"); 
mysql_select_db("infosystem", $link); 
$q = "SELECT * FROM info"; 
mysql_query("SET NAMES GB2312"); 
$rs = mysql_query($q, $link);  

echo ""; 
echo ""; 
while($row = mysql_fetch_object($rs)) echo ""; 
echo "
部门名称 员工姓名 PC名称
id'>del $row->depart $row->ename
"; 
?> 

    和一般数据显示页面不同的是,这次,在每一条记录之前都有一个"del"字样的连接,通过点击del,我们便可以删除MySQL中相应的数据记录。上述程序中红色部分的意义就是:当点击del时,将所对应记录的ID号传递给dodel.php。

    接下去看dodel.php: 
复制代码 代码如下:

$link =mysql_connect("localhost","root","管理员密码"); 
mysql_select_db("infosystem", $link); 
$del_id=$_GET["id"]; 
$exec="delete from info where id=$del_id"; 
mysql_query($exec, $link); 
echo "删除成功!"; 
mysql_close($link); 
?> 

    这个页面就是这次专题的关键,它接收到来自view.php的ID号,并将它代入用于删除记录的SQL语句,从而达到删除纪录的目的。

    我们来详细看一下,用于MySQL数据删除的SQL语句为:

delete from 表名 where 条件=值
    这里的值我们通过$del_id=$_GET["id"]来接收,并传递给SQL语句,最后通过mysql_query来执行这句SQL语句。

    好了,大家可以确认一下,MySQL中的数据是否已经被正确删除了呢?大家如果有什么问题可以直接留言提问~

作者:Sunec
原载:Cenus Blog
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