reg.php

实现考试管理系统

<?php
ob_start();
session_start();
include 'msg.php';
include 'conn.php';
//获取值
$username=$_POST['text1'];
$userpsw1=$_POST['text2'];
$userpsw2=$_POST['text3'];
$useremail=$_POST['text4'];
$userque=$_POST['text5'];
$userresult=$_POST['text6'];
//用户名判断
if (strlen($username)<=0)
{
$_SESSION['infom']="用户名不能为空！";
my_header("regesit.php");
break;
}
if (strlen($username)>16 || strlen($username)<4)
{
$_SESSION['infom']="用户名应为4-16个字符！";
my_header("regesit.php");
break;
}
//密码判断
if (strlen($userpsw1)<=0)
{
$_SESSION['infom']="密码不能为空！";
my_header("regesit.php");
break;
}
if (strlen($userpsw1)>16 || strlen($userpsw1)<4)
{
$_SESSION['infom']="密码长度应为6-16,请重新输入！";
my_header("regesit.php");
break;
}
if (strcmp($userpsw1,$userpsw2)!=0)
{
$_SESSION['infom']="两次密码不一致,请重新输入！";
my_header("regesit.php");
break;
}

//邮箱地址判断
if (strlen($useremail)<=0)
{
$_SESSION['infom']="E-mail地址不能为空！";
my_header("regesit.php");
break;
}
$has=ereg("^[a-zA-Z]+@[a-zA-Z1-9]+\.[a-zA-Z]+$",$useremail);//利用正则表达式判断邮箱地址格式
if (!$has)
{
$_SESSION['infom']="E-mail地址错误！";
my_header("regesit.php");
break;
}

//密码提示问题判断
if (strlen($userque)<=0)
{
$_SESSION['infom']="密码提示问题不能为空！";
my_header("regesit.php");
break;
}
if (strlen($userresult)<=0)
{
$_SESSION['infom']="密码提示答案不能为空！";
my_header("regesit.php");
break;
}
if (strlen($userque)>32 || strlen($userque)<4)
{
$_SESSION['infom']="密码提示问题应应为4-32个字符长度,请重新输入！";
my_header("regesit.php");
break;
}
if (strlen($userresult)>32 || strlen($userresult)<4)
{
$_SESSION['infom']="密码提示问题答案应为6-16个字符长度,请重新输入！";
my_header("regesit.php");
break;
}



//查找数据库看用户是否存在
$str="select * from user where username='" .$username. "'";
$result=mysql_query($str,$link);
if (mysql_num_rows($result)==1)
{ 
$_SESSION['infom']="此用户名已存在！";
my_header("regesit.php");
break;
}
else
{
//写入数据库
mysql_free_result($result);
$str="insert into user values('','$username','$userpsw1','$useremail','$userque','$userresult')";
$result=mysql_query($str) or die ("插入数据失败！".mysql_error());
$_SESSION['username']="";
msg("添加成功！","useradmin.php");
}
mysql_free_result($result);
mysql_close($link);
?>