php用户注册登录系统之注册处理页面
注册处理页面
代码如下：
<?php
//注册处理界面 regcheck.php
if(isset($_POST["Submit"]) && $_POST["Submit"] == "注册")
{
$user = $_POST["username"];
$psw = $_POST["userpwd"];
$psw_confirm = $_POST["confirm"];
if($user == "" || $psw == "" || $psw_confirm == "")
{
echo "<script>alert('请确认信息完整性！'); history.go(-1);</script>";
}
else
{
if($psw == $psw_confirm)
{
$conn = mysqli_connect("localhost","root","root"); //连接数据库,帐号密码为自己数据库的帐号密码
if(mysqli_errno($conn)){
echo mysqli_error($conn);
exit;
}
mysqli_select_db($conn,"userdb"); //选择数据库
mysqli_set_charset($conn,'utf8'); //设定字符集
$sql = "select username from user where username = '$user'"; //SQL语句
$result = mysqli_query($conn,$sql); //执行SQL语句
$num = mysqli_num_rows($result); //统计执行结果影响的行数
if($num) //如果已经存在该用户
{
echo "<script>alert('用户名已存在'); history.go(-1);</script>";
}
else //不存在当前注册用户名称
{
$sql_insert = "insert into `user` (`username`,`userpwd`) values('" . $user . "','" . $psw ."')";
$res_insert = mysqli_query($conn,$sql_insert);
//$num_insert = mysql_num_rows($res_insert);
if($res_insert)
{
echo "<script>alert('注册成功！'); history.go(-1);</script>";
}
else
{
echo "<script>alert('系统繁忙，请稍候！'); history.go(-1);</script>";
}
}
}
else
{
echo "<script>alert('密码不一致！'); history.go(-1);</script>";
}
}
}
else
{
echo "<script>alert('提交未成功！');</script>";
}
?>注册页面程序流程图
