Home Backend Development PHP Tutorial How to implement registration and login interface in php

How to implement registration and login interface in php

May 31, 2018 am 11:19 AM
php method

This article mainly introduces the method of realizing registration and login interface in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.

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

I created several files on my computer:

login.html (login page)

register.html (Registration page)

success.html (Login success redirect page)

return.html (Registration success page )

login.php

register.php

Login interface and registration interface and success.html are combined There is no

, everything is just some html tags 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 appears 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

register.php It is the background page corresponding to the registration page

<?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
        {
        $str="select count(*) from register where username="."&#39;"."$name"."&#39;";
        $result=mysql_query($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(&#39;SET NAMES UTF8&#39;);
        $close=mysql_close($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>";    
        }
      }
    }
  }
?>
Copy after login

login.php login interface corresponding to the background file

<?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;
      }
      $str="select password from register where username="."&#39;"."$name"."&#39;";
      mysql_query(&#39;SET NAMES UTF8&#39;);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>";
      }
    }
    
  }
}
?>
Copy after login

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

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study. At the same time, I also hope that everyone will support the PHP Chinese website.

Related recommendations:

phpGraphic tutorial on using namespace (with code)

PHP ajax implementation Province and city linkage function

phpDetailed explanation of namespace usage

The above is the detailed content of How to implement registration and login interface in php. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Roblox: Bubble Gum Simulator Infinity - How To Get And Use Royal Keys
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Nordhold: Fusion System, Explained
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Mandragora: Whispers Of The Witch Tree - How To Unlock The Grappling Hook
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1666
14
PHP Tutorial
1272
29
C# Tutorial
1251
24
PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

PHP vs. Python: Understanding the Differences PHP vs. Python: Understanding the Differences Apr 11, 2025 am 12:15 AM

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

The Enduring Relevance of PHP: Is It Still Alive? The Enduring Relevance of PHP: Is It Still Alive? Apr 14, 2025 am 12:12 AM

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP vs. Other Languages: A Comparison PHP vs. Other Languages: A Comparison Apr 13, 2025 am 12:19 AM

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python: Code Examples and Comparison PHP and Python: Code Examples and Comparison Apr 15, 2025 am 12:07 AM

PHP and Python have their own advantages and disadvantages, and the choice depends on project needs and personal preferences. 1.PHP is suitable for rapid development and maintenance of large-scale web applications. 2. Python dominates the field of data science and machine learning.

PHP and Python: Different Paradigms Explained PHP and Python: Different Paradigms Explained Apr 18, 2025 am 12:26 AM

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

See all articles