PHP实现一个简陋的注册登录页面
今天来水一篇没有**用的 /滑稽脸，代码简陋臃肿考虑不全，各位大佬轻喷，还望不吝赐教。
首先考虑了一下需要至少四个页面：register.html、register.php、login.html、login.php。register.html是这么写的：
<!DOCTYPE html><html><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><head> ???<title>注册界面</title></head><body> ???<form action="register.php" method="post"> ???????用户名：<input type="text" name="name"></input> ???????<br /> ???????密码：<input type="password" name="password"></input> ???????<br /> ???????<input type="submit" value="注册"></input> ???</form></body></html>register.php是这么写的：
<?php ???header("Content-type:text/html;charset=utf-8"); ???$conn=new mysqli('localhost','wy','000000','test'); ???if ($conn->connect_error){ ???????die("服务器连接失败！"); ???} ???$name=$_POST["name"]; ???$password=$_POST["password"]; ???$sql="insert into new_info values('$name',$password)"; ???$res=$conn->query($sql); ???if(!$res){ ???????echo "注册失败！"; ???}else{ ???????????if($conn->affected_rows>0){ ???????????????echo "注册成功！"; ???????????}else{ ???????????????echo "注册失败"; ???????????} ???} ???$conn->close();?>login.html是这么写的：
<!DOCTYPE html><html><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><head> ???<title>登录界面</title></head><body> ???<form action="login.php" method="post"> ???????用户名：<input type="text" name="name"></input> ???????<br /> ???????密码：<input type="password" name="password"></input> ???????<br /> ???????<input type="submit" value="登录"></input> ???</form></body></html>login.php是这么写的：
<?php ???header("Content-type:text/html;charset=utf-8"); ???$conn=new mysqli('localhost','wy','000000','test'); ???if ($conn->connect_error){ ???????die("服务器连接失败！"); ???} ???$name=$_POST["name"]; ???$password=$_POST["password"]; ???$sql_name="select name from new_info where name='$name'"; ???$res_sql=$conn->query($sql_name); ???if($conn->affected_rows==0){ ???????die("账号或密码有误"); ???}else{ ???????$sql_pass="select password from new_info where name='$name'"; ???????$res_pass=$conn->query($sql_pass); ???????$row_pass=$res_pass->fetch_row(); ???????if($row_pass[0]==$password){ ???????????echo "登录成功！"; ???????}else{ ???????????echo "账号或密码有误"; ???????} ???} ???$conn->close();?>然后来看一下效果：
看一下数据库：
可以看到已经将数据写入数据库。
接着来登录试一下：
换个错误密码试一下：
PHP实现一个简陋的注册登录页面
原文地址：https://www.cnblogs.com/Timesi/p/9349646.html