Implementation case of php registration and login interface (recommended)

Home

Backend Development

PHP Tutorial

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

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Dec 05, 2016 pm 01:28 PM

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>

<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>

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>

<&#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;>

<&#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;>

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!

The above is the entire content of the PHP registration and login interface implementation case (recommended) brought by the editor. I hope you will support Script Home~

Statement

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

The Continued Use of PHP: Reasons for Its EnduranceApr 19, 2025 am 12:23 AM

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python: Exploring Their Similarities and DifferencesApr 19, 2025 am 12:21 AM

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP and Python: Different Paradigms ExplainedApr 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.

PHP and Python: A Deep Dive into Their HistoryApr 18, 2025 am 12:25 AM

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

Choosing Between PHP and Python: A GuideApr 18, 2025 am 12:24 AM

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP and Frameworks: Modernizing the LanguageApr 18, 2025 am 12:14 AM

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHP's Impact: Web Development and BeyondApr 18, 2025 am 12:10 AM

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

How does PHP type hinting work, including scalar types, return types, union types, and nullable types?Apr 17, 2025 am 12:25 AM

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

See all articles