Table of Contents
回复讨论(解决方案)
Home Backend Development PHP Tutorial 怎么建多维数组

怎么建多维数组

Jun 23, 2016 pm 01:21 PM

大神们,我的数据有3列,id(如a1\a2..d1\d2之类的),name(就是人名),和age(年龄,数字)。怎么用PHP建这个多维数组?

include("IncDB.php"); 

$result=mysql_query("SELECT * FROM lists order by id asc",$link); //数据全在这个表里
$row=mysql_fetch_row($result); 
$abcb=array();//下面怎么办?我看了,没学会。谢谢大神。


回复讨论(解决方案)

while($row=mysql_fetch_row($result)){
    $abcb[] = $row;
}

谢谢!那我要是提取$abcb[]中id=d12,用户的姓名和年龄,该怎么写呢?

用for循环遍历

for(){
if($abcb[$i][id] == 'd12'){
    echo $abcb[$i]['name'].abcb[$i]['age'];
}

}


具体 看输出的数组形式

用for,我知道可以,但如果 用 FOReach,怎么把$abcb[]中的所有姓名和年龄显示出来呢?谢谢大神们。

1

while($row=mysql_fetch_assoc($result)){    $abcb[] = $row;}foreach($abcd as $v) {  echo "$v[name] $v[age]<br>";}

Copy after login


1

while($row=mysql_fetch_row($result)){    $abcb[] = $row;}foreach($abcd as $v) {  echo "$v[1] $v[2]<br>";}

Copy after login
注意:使用下标时要注意查询时字段列表的循序

我再追问一句,foreach($abcd as $v),这是什么意思呢?能解释一下么?

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

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
WWE 2K25: How To Unlock Everything In MyRise
4 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)

cURL in PHP: How to Use the PHP cURL Extension in REST APIs cURL in PHP: How to Use the PHP cURL Extension in REST APIs Mar 14, 2025 am 11:42 AM

The PHP Client URL (cURL) extension is a powerful tool for developers, enabling seamless interaction with remote servers and REST APIs. By leveraging libcurl, a well-respected multi-protocol file transfer library, PHP cURL facilitates efficient execution of various network protocols, including HTTP, HTTPS, and FTP. This extension offers granular control over HTTP requests, supports multiple concurrent operations, and provides built-in security features.

Explain the concept of late static binding in PHP. Explain the concept of late static binding in PHP. Mar 21, 2025 pm 01:33 PM

Article discusses late static binding (LSB) in PHP, introduced in PHP 5.3, allowing runtime resolution of static method calls for more flexible inheritance.Main issue: LSB vs. traditional polymorphism; LSB's practical applications and potential perfo

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

Framework Security Features: Protecting against vulnerabilities. Framework Security Features: Protecting against vulnerabilities. Mar 28, 2025 pm 05:11 PM

Article discusses essential security features in frameworks to protect against vulnerabilities, including input validation, authentication, and regular updates.

How to send a POST request containing JSON data using PHP's cURL library? How to send a POST request containing JSON data using PHP's cURL library? Apr 01, 2025 pm 03:12 PM

Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...

Customizing/Extending Frameworks: How to add custom functionality. Customizing/Extending Frameworks: How to add custom functionality. Mar 28, 2025 pm 05:12 PM

The article discusses adding custom functionality to frameworks, focusing on understanding architecture, identifying extension points, and best practices for integration and debugging.

What exactly is the non-blocking feature of ReactPHP? How to handle its blocking I/O operations? What exactly is the non-blocking feature of ReactPHP? How to handle its blocking I/O operations? Apr 01, 2025 pm 03:09 PM

An official introduction to the non-blocking feature of ReactPHP in-depth interpretation of ReactPHP's non-blocking feature has aroused many developers' questions: "ReactPHPisnon-blockingbydefault...

See all articles