Implementation case of php registration and login interface (recommended)

Implementation case of php registration and login interface (recommended)_php example

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Release： 2023-03-02 22:54:01

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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:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>登录界面</title>
</head>

<body>
<form method="post" action="login.php">
账号：
<input type="text" name="usernamel"><br/><br/>
密码：
<input type="password" name="passwordl">
<input type="submit" value="登录" name="subl">
<a href="http://127.0.0.1:8080/register.html">没有账号，注册</a>
</form>
</body>
</html>

Copy after login

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>会员注册</title>
</head>

<body>
<form method="post" action="register.php">
账  户：
<input type="text" name="username"><br/><br/>
密  码：
<input type="password" name="password"><br/><br/>
密码确认：
<input type="password" name="password2">
<input type="submit" value="注册" name="sub">
</form>
</body>
</html>

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

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>无标题文档</title>
</head>

<body>
注册成功！<br/>
5秒后返回登录界面<br/>
你也可以直接点击回到<a href="http://127.0.0.1:8080/login.html">登录页面</a>
<script type="text/javascript">
setTimeout("ren()",5000);
function ren()
{
  window.location="http://127.0.0.1:8080/login.html";
}

</script>

</body>
</html>

Copy after login

<&#63;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"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."请填写完成！"."\"".")".";"."</script>";
          echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/register.html"."\""."</script>";    
          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"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."该用户名已被注册"."\"".")".";"."</script>";
        echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/register.html"."\""."</script>";   
        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"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/return.html"."\""."</script>";    
        }
        }
        else
        {
          echo"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."密码不一致！"."\"".")".";"."</script>";
          echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/register.html"."\""."</script>";    
        }
      }
    }
  }
&#63;>

Copy after login

<&#63;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"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."请填写正确的信息！"."\"".")".";"."</script>";
        echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/login.html"."\""."</script>";
        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"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/success.html"."\""."</script>";
      }
      {  
        echo"<script type="."\""."text/javascript"."\"".">"."window.alert"."("."\""."登录失败！"."\"".")".";"."</script>";
        echo"<script type="."\""."text/javascript"."\"".">"."window.location="."\""."http://127.0.0.1:8080/login.html"."\""."</script>";
      }
    }
    
  }
}
&#63;>

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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