How to implement website visit counter in PHP-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

How to implement website visit counter in PHP

小云云

Jan 10, 2018 pm 04:16 PM

phpcounterViews

Website visits are also an important function. This article mainly introduces the implementation of website visits counter in PHP in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

Simple website visit counter implementation, the details are as follows

First explainThe idea:

1. The user issues an access request to the server
2 .The server reads the access count file, +1, and returns to the client
3. The server saves the new number of views
4. When a new user visits, repeat 123

Solution (Main algorithm):

1. Data file: counter.dat
2. Read data file
Open the file;
If it does not exist, create it and Use 0 as the initial data;
Otherwise, read the data;
Close the file.
3. Write the accumulated data to the file counter.dat
Accumulate data;
Open the file;
Write data;
Close the file;
4. Output information to the web page ;
Create the Count_Visitor folder.

In the Count_Visitor folder, create the Count_Visitor.php file and type the following code:

<html>
<head>
 <meta charset="UTF-8">
 <title>浏览计数器-ljccccccccccc@163.com</title>
</head>
<body>
 <?php
  //数字输出网页计数器
  $max_len = 9;
  $CounterFile = "counter.dat";
  if(!file_exists($CounterFile)){  //如果计数器文件不存在
   $counter = 0;     
   $cf = fopen($CounterFile,"w"); //打开文件
   fputs($cf,&#39;0&#39;);     //初始化计数器
   fclose($cf);     //关闭文件
  }
  else{          //取回当前计数器的值
   $cf = fopen($CounterFile,"r");
   $counter = trim(fgets($cf,$max_len));
   fclose($cf);
  }
  $counter++;         //计数器加一
  $cf = fopen($CounterFile,"w");    //写入新的数据
  fputs($cf,$counter);
  fclose($cf);
 ?>
 <p id="dd" align="center">
  <span>欢迎您!</span>
  <span>您是本站的第
   <?php
    echo $counter;       //输出计数器
   ?>
  位访客！</span>
 </p>

</body>
</html>

If necessary, you can type the css file decoration yourself.

Variables contained in the code and their meaning

$max_len: Custom variables. The maximum number of digits in the counter;

$CounterFile: Custom variable. The file where the counter is stored (path and file name);

$counter: custom variable. The value of the counter;

$cf: custom variable. Open the handle of the counting file;

Functions and meanings contained in the code

file_exists($CounterFile): Determine whether the file exists;

fopen($CounterFile,"w" ) : Open the file for writing. (The function has its own attributes, if it does not exist, it will be created)

fopen($CounterFile,'r'): Open the file in read-only mode.

fgets($cf,$max_len): Read characters of specified length from the file

fputs($cf,”0”): Write character “0” into $cf

fclose($cf): Close the file opened by $cf

trim(fgets($cf,$max_len)): Remove the spaces on both sides of the extracted string

That’s it for today’s notes!

A very simple php small application.

Related recommendations:

Introduction to redis counter method to prevent brushing orders

Introduction to method to implement php website visit counter

How to implement the basics of counters in JavaScript

The above is the detailed content of How to implement website visit counter in PHP. For more information, please follow other related articles on the PHP Chinese website!

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

PHP's Purpose: Building Dynamic WebsitesApr 15, 2025 am 12:18 AM

PHP is used to build dynamic websites, and its core functions include: 1. Generate dynamic content and generate web pages in real time by connecting with the database; 2. Process user interaction and form submissions, verify inputs and respond to operations; 3. Manage sessions and user authentication to provide a personalized experience; 4. Optimize performance and follow best practices to improve website efficiency and security.

PHP: Handling Databases and Server-Side LogicApr 15, 2025 am 12:15 AM

PHP uses MySQLi and PDO extensions to interact in database operations and server-side logic processing, and processes server-side logic through functions such as session management. 1) Use MySQLi or PDO to connect to the database and execute SQL queries. 2) Handle HTTP requests and user status through session management and other functions. 3) Use transactions to ensure the atomicity of database operations. 4) Prevent SQL injection, use exception handling and closing connections for debugging. 5) Optimize performance through indexing and cache, write highly readable code and perform error handling.

How do you prevent SQL Injection in PHP? (Prepared statements, PDO)Apr 15, 2025 am 12:15 AM

Using preprocessing statements and PDO in PHP can effectively prevent SQL injection attacks. 1) Use PDO to connect to the database and set the error mode. 2) Create preprocessing statements through the prepare method and pass data using placeholders and execute methods. 3) Process query results and ensure the security and performance of the code.

PHP and Python: Code Examples and ComparisonApr 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 in Action: Real-World Examples and ApplicationsApr 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: Creating Interactive Web Content with EaseApr 14, 2025 am 12:15 AM

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python: Comparing Two Popular Programming LanguagesApr 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.

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.

See all articles