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php mysql 删除记录( url传值删除数据)

WBOY
WBOYOriginal
2016-06-08 17:26:201367browse

本款删除数据代码是一款根据用户url地址栏传过来的参数,再去mysql数据库中执行删除操作哦。

<script>ec(2);</script>
 代码如下 复制代码

$host = 'localhost';
$user_name = 'root';
$password = 'admin';

$conn = mysql_connect($host,$user_name,$password);
if(!$conn)
{
    die('数据库连接失败:'.mysql_error());
}
mysql_select_db('test');

$sql = 'select id,name,city,created_time from users';

$result = mysql_query($sql) or die("
error: ".mysql_error()."
产生问题的sql:".$sql);
?>


13-12.php




   
       
       
       
       
       
   

if($num = mysql_num_rows($result))
{
    while($row = mysql_fetch_array($result,mysql_assoc))
    {
?>
   


       
       
       
       
       
   
    }
}
mysql_close($conn);
?>

用户id
用户名称
来自城市
注册时间
操作
            删除 



 代码如下 复制代码

if(!isset($_get['id']))
{
    echo '参数错误!';
    exit;
}

$id = $_get['id'];
if(empty($id))
{
    echo '用户id不能为空!';
    exit;
}

$host = 'localhost';
$user_name = 'root';
$password = 'admin';

$conn = mysql_connect($host,$user_name,$password);
if(!$conn)
{
    die('数据库连接失败:'.mysql_error());
}
mysql_select_db('test');

//先判断是否存在该id的用户
$sql = "select * from users where id=$id";
$result = mysql_query($sql) or die("
error: ".mysql_error()."
sql:".$sql);
if(!mysql_num_rows($result))
{
    echo '用户id错误!';
    exit;
}

//删除用户数据
$sql = "delete from users where id=$id";
mysql_query($sql) or die("
error: ".mysql_error()."
sql:".$sql);
mysql_close($conn);

echo '数据删除成功,返回13-12.php查看数据';

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