Implementation case of php registration and login interface (recommended)

At first, I thought the two functions of registration and login on a website were magical. Later, after doing some research on my own, I found that the principle is actually very simple. Let’s take a look at how to implement it. . . .

I created a few files on my computer:

success.html (jump page after successful login)

return.html (registration success page)

The login interface, registration interface and success.html are not there

Everything is html markup as follows:

   登录界面 
   账号： 

 密码：   没有账号，注册

Copy after login

   会员注册 
   账 户： 

 密 码： 

 密码确认：

Copy after login

return.html is the page that is displayed after successful registration. There is a js code in it that is used to return to the login interface regularly

   无标题文档 
  注册成功！
 5秒后返回登录界面
 你也可以直接点击回到登录页面

Copy after login

<?php $link=mysql_connect("localhost","root","207207");//链接数据库 header("Content-type:text/html;charset=utf-8"); if($link) { //echo"链接数据库成功"; $select=mysql_select_db("login",$link);//选择数据库 if($select) { //echo"选择数据库成功！"; if(isset($_POST["sub"])) { $name=$_POST["username"]; $password1=$_POST["password"];//获取表单数据 $password2=$_POST["password2"]; if($name==""||$password1=="")//判断是否填写 { echo""; echo""; exit; } if($password1==$password2)//确认密码是否正确 { $str="select count(*) from register where username="."'"."$name"."'"; $result=mysql_query($str,$link); $pass=mysql_fetch_row($result); $pa=$pass[0]; if($pa==1)//判断数据库表中是否已存在该用户名 { echo""; echo""; exit; } $sql="insert into register values("."\""."$name"."\"".","."\""."$password1"."\"".")";//将注册信息插入数据库表中 //echo"$sql"; mysql_query($sql,$link); mysql_query('SET NAMES UTF8'); $close=mysql_close($link); if($close) { //echo"数据库关闭"; //echo"注册成功！"; echo""; } } else { echo""; echo""; } } } } ?>

Copy after login

<?php 　　header("Content-type:text/html;charset=utf-8"); $link=mysql_connect("localhost","root","207207"); if($link) { $select=mysql_select_db("login",$link); if($select) { if(isset($_POST["subl"])) { $name=$_POST["usernamel"]; $password=$_POST["passwordl"]; if($name==""||$password=="")//判断是否为空 { echo""; echo""; exit; } $str="select password from register where username="."'"."$name"."'"; mysql_query('SET NAMES UTF8');20 $result=mysql_query($str,$link); $pass=mysql_fetch_row($result); $pa=$pass[0]; if($pa==$password)//判断密码与注册时密码是否一致 { echo"登录成功！"; echo""; } { echo""; echo""; } } } } ?>

Copy after login

I still have a lot to improve when I have nothing to do. Everyone is welcome to ask questions and discuss and provide easier methods!

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