注册核心代码recevier.php

<?php

//加载配置文件
include '../init.php';

//连接数据库
include DIR_CORE.'MYSQLDB.php';


//接受表单传送过来的信息

$username = trim($_POST['username']);
$password1 = trim($_POST['password1']);
$password2 = trim($_POST['password2']);
$vcode = trim($_POST['vcode']);

//判断数据的合法性
if(empty($username) || empty($password1) || empty($password2) ){
    header("refresh:2;url=./register.php");
    die("用户名或密码不能为空，请重新注册！");
}
if(strlen($username) >20){
    header("refresh:2;url=./register.php");
    die("用户名的有效长度不能超过20位，请重新注册！");
}
if($password1 !== $password2){
    header("refresh:2;url=./register.php");
    die("密码前后不一致，请重新注册！");
}
if(strlen($password1) <6 || strlen($password1) >16){
    header("refresh:2;url=./register.php");
    die("密码有效长度为6-16位，请重新注册！");
}

$sql = "select * from user where user_name = '$username'";
$result = my_query($sql);
if(mysql_affected_rows()>0){
    header("refresh:2;url=./register.php");
    die("用户名已存在，请重新注册！");
}

//插入数据
$password1=md5($password1);
$sql = "insert into user values(null,'$username','$password1') ";
$result=my_query($sql);
if($result){
    header("refresh:2;url=./login.php");
    die("注册成功！2秒后跳转到登录界面");
}else{
    header("refresh:2;url=./register.php");
    die("发生未知错误，请重新注册！");
    }