PHP5环境下采用Sqlite数据库开发小小总结
最近花了10多天重新写了泡菜博客,采用了PHP5+SQLITE技术。原因是MYSQL管理非常麻烦,而且还得花钱另外买数据库。 sqlite 是一款轻量级的、基于文件的嵌入式数据库,2000年就已经诞生,经过7年多的发展,直到今天已经成为最流行的嵌入式数据库,包括Google在内的公司在其桌面软件中亦使用 sqlite 存储用户数据。由此可以看出,已经没有任何理由去怀疑sqlite的稳定性了。(此段载自蓝雨设计) 那么如何在PHP5中使用呢?PHP5中有2种连接sqlite的方法。一种是默认提供的,另一种是PDO类。默认的只支持sqlite2,但是PDO可以间接支持sqlite3。下面是我写的简单的PDO类可以兼容2个版本。 然后实例化,在实例化中如果数据库存在就自动打开,不存在就会自动创建数据库。 创建数据库表 接下来添加数据 之后就是如何读取数据了。也就是循环。 对于企业来说SQLITE可能会小点,但是对于个人来说它确实是个好东西,可移植性非常好。 本人水平有限,如果以上内容有错误请指正。谢谢!
以下为引用的内容:
class SQLite{
function __construct($file){
try{
$this->Connection=new PDO(sqlite2:.$file);
}catch(PDOException $e){
try{
$this->Connection=new PDO(sqlite:.$file);
}catch(PDOException $e){
exit(error!);
}
}
}
function __destruct(){
$this->Connection=null;
}
function Query($SQL){
return $this->Connection->Query($SQL);
}
function Execute($SQL){
return $this->Query($SQL)->fetch();
}
function RecordArray($SQL){
return $this->Query($SQL)->fetchAll();
}
function RecordCount($SQL){
return count($this->RecordArray($SQL));
}
function RecordLastID(){
return $this->Connection->lastInsertId();
}
}
以下为引用的内容:
$DB=new SQLite(blog.db); //这个数据库文件名字任意
以下为引用的内容:
$DB->Query("create table test(id integer primary key,title varchar(50)");
以下为引用的内容:
$DB->Query("insert into test(title) values(泡菜)");
$DB->Query("insert into test(title) values(蓝雨)");
$DB->Query("insert into test(title) values(Ajan)");
$DB->Query("insert into test(title) values(傲雪蓝天)");
以下为引用的内容:
$SQL=select title from test order by id desc;
foreach($DB->Query($SQL) as $RS){
echo $RS[title];
}

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



This AI-assisted programming tool has unearthed a large number of useful AI-assisted programming tools in this stage of rapid AI development. AI-assisted programming tools can improve development efficiency, improve code quality, and reduce bug rates. They are important assistants in the modern software development process. Today Dayao will share with you 4 AI-assisted programming tools (and all support C# language). I hope it will be helpful to everyone. https://github.com/YSGStudyHards/DotNetGuide1.GitHubCopilotGitHubCopilot is an AI coding assistant that helps you write code faster and with less effort, so you can focus more on problem solving and collaboration. Git

Go language development mobile application tutorial As the mobile application market continues to boom, more and more developers are beginning to explore how to use Go language to develop mobile applications. As a simple and efficient programming language, Go language has also shown strong potential in mobile application development. This article will introduce in detail how to use Go language to develop mobile applications, and attach specific code examples to help readers get started quickly and start developing their own mobile applications. 1. Preparation Before starting, we need to prepare the development environment and tools. head

On March 3, 2022, less than a month after the birth of the world's first AI programmer Devin, the NLP team of Princeton University developed an open source AI programmer SWE-agent. It leverages the GPT-4 model to automatically resolve issues in GitHub repositories. SWE-agent's performance on the SWE-bench test set is similar to Devin, taking an average of 93 seconds and solving 12.29% of the problems. By interacting with a dedicated terminal, SWE-agent can open and search file contents, use automatic syntax checking, edit specific lines, and write and execute tests. (Note: The above content is a slight adjustment of the original content, but the key information in the original text is retained and does not exceed the specified word limit.) SWE-A

Go language is an efficient, concise and easy-to-learn programming language. It is favored by developers because of its advantages in concurrent programming and network programming. In actual development, database operations are an indispensable part. This article will introduce how to use Go language to implement database addition, deletion, modification and query operations. In Go language, we usually use third-party libraries to operate databases, such as commonly used sql packages, gorm, etc. Here we take the sql package as an example to introduce how to implement the addition, deletion, modification and query operations of the database. Assume we are using a MySQL database.

Hibernate polymorphic mapping can map inherited classes to the database and provides the following mapping types: joined-subclass: Create a separate table for the subclass, including all columns of the parent class. table-per-class: Create a separate table for subclasses, containing only subclass-specific columns. union-subclass: similar to joined-subclass, but the parent class table unions all subclass columns.

HTML cannot read the database directly, but it can be achieved through JavaScript and AJAX. The steps include establishing a database connection, sending a query, processing the response, and updating the page. This article provides a practical example of using JavaScript, AJAX and PHP to read data from a MySQL database, showing how to dynamically display query results in an HTML page. This example uses XMLHttpRequest to establish a database connection, send a query and process the response, thereby filling data into page elements and realizing the function of HTML reading the database.

Apple's latest releases of iOS18, iPadOS18 and macOS Sequoia systems have added an important feature to the Photos application, designed to help users easily recover photos and videos lost or damaged due to various reasons. The new feature introduces an album called "Recovered" in the Tools section of the Photos app that will automatically appear when a user has pictures or videos on their device that are not part of their photo library. The emergence of the "Recovered" album provides a solution for photos and videos lost due to database corruption, the camera application not saving to the photo library correctly, or a third-party application managing the photo library. Users only need a few simple steps

How to use MySQLi to establish a database connection in PHP: Include MySQLi extension (require_once) Create connection function (functionconnect_to_db) Call connection function ($conn=connect_to_db()) Execute query ($result=$conn->query()) Close connection ( $conn->close())
