search
HomeBackend DevelopmentPHP TutorialORM extension library in PHP8.0: Eloquent

As developers’ needs for data interaction continue to grow, ORM has become an indispensable part of modern development. It can hide database operations in the background and provide a simplified API for CRUD operations. Among these ORM libraries, Eloquent has attracted the attention of many developers because it has been widely used in the Laravel framework. In PHP 8.0, Eloquent comes as a standalone extension library and can now be used in your projects.

In this article, we will explore some of Eloquent’s key features and introduce how to integrate this extension library in your PHP project.

Installing Eloquent

Before installing Eloquent, you need to install PHP8.0 or higher to ensure compatibility. Eloquent can be installed using [composer](https://getcomposer.org/), just run the following command in the terminal:

composer require illuminate/database

Eloquent Model

The basis for querying and modifying the database in Eloquent Is the model (Model). Models are the core concept of ORM and are usually mapped to database tables. Eloquent models provide a very convenient way to perform standard operations such as create, update, and delete.

In Eloquent, the Model class has definable properties and methods for interacting with database tables. Let’s look at a simple example:

use IlluminateDatabaseEloquentModel;

class User extends Model
{
    protected $fillable = ['name', 'email', 'password'];
}

This example defines a User model that contains fill attributes $fillable. This tells Eloquent which properties can be set during batch allocation. In this case, only the properties listed in the $fillable property can be set via array assignment.

Database connection

You can configure the database connection in the following ways:

use IlluminateDatabaseCapsuleManager as DB;

$db = new DB;

$db->addConnection([
    'driver'    => 'mysql',
    'host'      => 'localhost',
    'database'  => 'database',
    'username'  => 'username',
    'password'  => 'password',
    'charset'   => 'utf8',
    'collation' => 'utf8_unicode_ci',
    'prefix'    => '',
]);

$db->setAsGlobal();

Through the addConnection method, Eloquent will establish a database connection in the application . You can add multiple connections to each channel and use different connections in different scenarios. The

setAsGlobal method will make the database connection instantiated by this connection become a global connection, and this connection will be given priority in subsequent operations.

Create new records

You can use Eloquent to create new data records, for example:

$user = new User;
$user->name = 'John Doe';
$user->email = 'john.doe@example.com';
$user->password = 'secret';
$user->save();

Query records

You can query data through Eloquent, for example:

$users = User::all();

$user = User::find(1);

$users = User::where('active', true)
             ->orderBy('name', 'desc')
             ->take(10)
             ->get();

Update records

You can use Eloquent to update existing records, for example:

$user = User::find(1);
$user->name = 'New Name';
$user->save();

When changing records, you should use the save method. If you only want to update some specific fields, you can use the update method:

User::where('id', 1)
    ->update(['name' => 'New Name']);

Delete records

You can use Eloquent to delete existing records, for example:

$user = User::find(1);
$user->delete();

Conclusion

Eloquent is a powerful ORM library and is famous as a part of the Laravel framework. However, it can benefit even more PHP applications through a separate extension library. With this overview of this article, you should now have a better understanding of Eloquent and can start using it in your own PHP 8.0 applications.

The above is the detailed content of ORM extension library in PHP8.0: Eloquent. 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怎么把负数转为正整数php怎么把负数转为正整数Apr 19, 2022 pm 08:59 PM

php把负数转为正整数的方法:1、使用abs()函数将负数转为正数,使用intval()函数对正数取整,转为正整数,语法“intval(abs($number))”;2、利用“~”位运算符将负数取反加一,语法“~$number + 1”。

php怎么实现几秒后执行一个函数php怎么实现几秒后执行一个函数Apr 24, 2022 pm 01:12 PM

实现方法:1、使用“sleep(延迟秒数)”语句,可延迟执行函数若干秒;2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句,可延迟执行函数若干秒和纳秒;3、使用“time_sleep_until(time()+7)”语句。

php怎么除以100保留两位小数php怎么除以100保留两位小数Apr 22, 2022 pm 06:23 PM

php除以100保留两位小数的方法:1、利用“/”运算符进行除法运算,语法“数值 / 100”;2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值,并保留两位小数。

php怎么根据年月日判断是一年的第几天php怎么根据年月日判断是一年的第几天Apr 22, 2022 pm 05:02 PM

判断方法:1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式;2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的,因此真实天数需要在此基础上加1。

php字符串有没有下标php字符串有没有下标Apr 24, 2022 am 11:49 AM

php字符串有下标。在PHP中,下标不仅可以应用于数组和对象,还可应用于字符串,利用字符串的下标和中括号“[]”可以访问指定索引位置的字符,并对该字符进行读写,语法“字符串名[下标值]”;字符串的下标值(索引值)只能是整数类型,起始值为0。

php怎么替换nbsp空格符php怎么替换nbsp空格符Apr 24, 2022 pm 02:55 PM

方法:1、用“str_replace(" ","其他字符",$str)”语句,可将nbsp符替换为其他字符;2、用“preg_replace("/(\s|\&nbsp\;||\xc2\xa0)/","其他字符",$str)”语句。

php怎么判断有没有小数点php怎么判断有没有小数点Apr 20, 2022 pm 08:12 PM

php判断有没有小数点的方法:1、使用“strpos(数字字符串,'.')”语法,如果返回小数点在字符串中第一次出现的位置,则有小数点;2、使用“strrpos(数字字符串,'.')”语句,如果返回小数点在字符串中最后一次出现的位置,则有。

php怎么读取字符串后几个字符php怎么读取字符串后几个字符Apr 22, 2022 pm 08:31 PM

在php中,可以使用substr()函数来读取字符串后几个字符,只需要将该函数的第二个参数设置为负值,第三个参数省略即可;语法为“substr(字符串,-n)”,表示读取从字符串结尾处向前数第n个字符开始,直到字符串结尾的全部字符。

See all articles

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)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft