Home Backend Development PHP Tutorial PHP调用数据库数据输出结果总重复一次

PHP调用数据库数据输出结果总重复一次

Jun 13, 2016 pm 01:35 PM
gt lt mysql quot

求助:PHP调用数据库数据输出结果总重复一次。
表里有两条内容:
1111111111111111111111111
2222222222222222222222222

PHP code
<!--

Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/

-->
<?php //设置数据库变量
$db_host   = 'localhost';
$db_user   = 'root';
$db_passw = '123456';
$db_name  = 'freebb';

$conn = mysql_connect($db_host,$db_user,$db_passw) or die ('数据库连接失败!');
mysql_query("set names 'utf8'");

mysql_select_db($db_name,$conn) or die('数据库选定失败!');
$sql = "SELECT * FROM `member` ORDER BY `id` DESC LIMIT 0, 16";

$result = mysql_query($sql) or die('数据库查询失败!');

  while($mem = mysql_fetch_object($result)) //循环开始
{
    $username = $mem->username;
      $bbsname = $mem->bbsname;
    $bbstype = $mem->bbstype;
?>

              
Copy after login
  • []


  • 输出显示内容为:
    11111111111111111111111111
    22222222222222222222222222
    11111111111111111111111111
    22222222222222222222222222

    请问这是怎么回事呢,求解

    ------解决方案--------------------
    探讨

    引用:
    引用:

    引用:
    while($mem = mysql_fetch_assoc($result)) //循环开始
    {
    echo $men['username'];
    echo $men['bbsname'];
    }

    这样会重复吗?看看
    ?>


    这样显示空白了 不能输出


    在循环里 var_dump($m……

    ------解决方案--------------------
    box.innerHTML+=box.innerHTML;这句的问题
    这样假设 box.innerHTML 为 '111';
    那么 box.innerHTML+=box.innerHTML; 后,box.innerHTML 为 '111111';
    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
    1273
    29
    C# Tutorial
    1253
    24
    Laravel Introduction Example Laravel Introduction Example Apr 18, 2025 pm 12:45 PM

    Laravel is a PHP framework for easy building of web applications. It provides a range of powerful features including: Installation: Install the Laravel CLI globally with Composer and create applications in the project directory. Routing: Define the relationship between the URL and the handler in routes/web.php. View: Create a view in resources/views to render the application's interface. Database Integration: Provides out-of-the-box integration with databases such as MySQL and uses migration to create and modify tables. Model and Controller: The model represents the database entity and the controller processes HTTP requests.

    MySQL and phpMyAdmin: Core Features and Functions MySQL and phpMyAdmin: Core Features and Functions Apr 22, 2025 am 12:12 AM

    MySQL and phpMyAdmin are powerful database management tools. 1) MySQL is used to create databases and tables, and to execute DML and SQL queries. 2) phpMyAdmin provides an intuitive interface for database management, table structure management, data operations and user permission management.

    MySQL vs. Other Programming Languages: A Comparison MySQL vs. Other Programming Languages: A Comparison Apr 19, 2025 am 12:22 AM

    Compared with other programming languages, MySQL is mainly used to store and manage data, while other languages ​​such as Python, Java, and C are used for logical processing and application development. MySQL is known for its high performance, scalability and cross-platform support, suitable for data management needs, while other languages ​​have advantages in their respective fields such as data analytics, enterprise applications, and system programming.

    Solve database connection problem: a practical case of using minii/db library Solve database connection problem: a practical case of using minii/db library Apr 18, 2025 am 07:09 AM

    I encountered a tricky problem when developing a small application: the need to quickly integrate a lightweight database operation library. After trying multiple libraries, I found that they either have too much functionality or are not very compatible. Eventually, I found minii/db, a simplified version based on Yii2 that solved my problem perfectly.

    Laravel framework installation method Laravel framework installation method Apr 18, 2025 pm 12:54 PM

    Article summary: This article provides detailed step-by-step instructions to guide readers on how to easily install the Laravel framework. Laravel is a powerful PHP framework that speeds up the development process of web applications. This tutorial covers the installation process from system requirements to configuring databases and setting up routing. By following these steps, readers can quickly and efficiently lay a solid foundation for their Laravel project.

    Solve MySQL mode problem: The experience of using the TheliaMySQLModesChecker module Solve MySQL mode problem: The experience of using the TheliaMySQLModesChecker module Apr 18, 2025 am 08:42 AM

    When developing an e-commerce website using Thelia, I encountered a tricky problem: MySQL mode is not set properly, causing some features to not function properly. After some exploration, I found a module called TheliaMySQLModesChecker, which is able to automatically fix the MySQL pattern required by Thelia, completely solving my troubles.

    Explain the purpose of foreign keys in MySQL. Explain the purpose of foreign keys in MySQL. Apr 25, 2025 am 12:17 AM

    In MySQL, the function of foreign keys is to establish the relationship between tables and ensure the consistency and integrity of the data. Foreign keys maintain the effectiveness of data through reference integrity checks and cascading operations. Pay attention to performance optimization and avoid common errors when using them.

    Compare and contrast MySQL and MariaDB. Compare and contrast MySQL and MariaDB. Apr 26, 2025 am 12:08 AM

    The main difference between MySQL and MariaDB is performance, functionality and license: 1. MySQL is developed by Oracle, and MariaDB is its fork. 2. MariaDB may perform better in high load environments. 3.MariaDB provides more storage engines and functions. 4.MySQL adopts a dual license, and MariaDB is completely open source. The existing infrastructure, performance requirements, functional requirements and license costs should be taken into account when choosing.

    See all articles