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()检测用户名是否在数据库失败!

Jun 13, 2016 pm 12:44 PM
name nbsp php post user

(求助)检测用户名是否在数据库失败!!
首先我要做的是检测用户名是否在数据库中!apmserv本地环境搭建,有一个bbs数据库,meassage表,表中有3个字段,分别是id user pass ;对应的值分别是 1 admin admin;类型分别是int(10) varchar(25) varchar(25);而本地共有3个php文件:



conn.php

$conn = @ mysql_connect("localhost", "root", "") or die("数据库链接错误");
mysql_select_db("bbs", $conn);
mysql_query("set names 'utf-8'"); //使用utf-8中文编码;
?>


register.php







   

login.php




include("conn.php");
if($_POST["submit"])   
$name=$_POST['user'];   
  
$sql="select * from message where user='".$name."'";    
$result=mysql_query($sql) or die("账号不正确");   
$num=mysql_num_rows($result);   
if($num==0){   
echo "帐号已存在";   

   
?>



问题来了:无论我在register.php输入什么提交给login.php 都是显示帐号已存在,而且原本login.php文件就显示帐号已存在!我本想检测用户名是否在数据库中,却感觉调用不了数据库!!!哪里错了吗!!
数据库
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