search
HomePHP FrameworkLaravellaravel sum different conditions

laravel sum different conditions

May 26, 2023 pm 01:39 PM

Laravel is a popular PHP development framework that provides many convenient functions and syntax to improve development efficiency. Among them, the sum function is a very commonly used function in Laravel, which can sum the values ​​in a set. But in actual development, we sometimes need to perform summation under different conditions. How should we deal with this? This article will introduce how Laravel performs sum operations under different conditions.

1. Sum operation in simple cases

In Laravel, we can easily perform sum operation on a collection, just call the sum function. For example, sum an array:

$sum = collect([1, 2, 3, 4, 5])->sum();

In this example, the value of $sum is 15, which is the sum of 1 2 3 4 5.

Similarly, if we have an array of objects and want to sum a certain attribute in it, we can do this:

$sum = collect([
    ['name' => 'Alice', 'score' => 80],
    ['name' => 'Bob', 'score' => 90],
    ['name' => 'Charlie', 'score' => 70]
])->sum('score');

In this example, the value of $sum is 240, That is the sum of 80 90 70.

2. Conditional sum operation

In actual development, we often need to perform sum operations under different conditions. In this case, we need to use the where function in Laravel. The where function can filter the values ​​in the collection based on specified conditions. For example, we have an array of users. Each user has two attributes: name and age. If we want to calculate the sum of the ages of all users older than 18 years old, we can do this:

$users = collect([
    ['name' => 'Alice', 'age' => 20],
    ['name' => 'Bob', 'age' => 16],
    ['name' => 'Charlie', 'age' => 25]
]);

$sum = $user->where('age', '>', 18)->sum('age');

In this example, $ The value of sum is 45, which is the sum of 20 25.

Similarly, if we have an array of orders, each order has a status attribute, and we want to calculate the sum of the amounts of all completed orders, we can do this:

$orders = collect([
    ['id' => 1, 'status' => 'created', 'amount' => 10],
    ['id' => 2, 'status' => 'completed', 'amount' => 20],
    ['id' => 3, 'status' => 'cancelled', 'amount' => 30],
    ['id' => 4, 'status' => 'completed', 'amount' => 40]
]);

$sum = $orders->where('status', 'completed')->sum('amount');

This example , the value of $sum is 60, which is the sum of 20 40.

3. Sum based on multiple conditions

Sometimes, we need to perform sum operation based on multiple conditions. This can be achieved by using the chain call of the where function in Laravel. For example, we have an array of users. Each user has three attributes: name, age, and region. If we want to calculate the sum of the ages of all users who are in Beijing and are older than 18 years old, we can do this:

$users = collect([
    ['name' => 'Alice', 'age' => 20, 'area' => 'Beijing'],
    ['name' => 'Bob', 'age' => 16, 'area' => 'Shanghai'],
    ['name' => 'Charlie', 'age' => 25, 'area' => 'Beijing']
]);

$sum = $user->where('age', '>', 18)->where('area', 'Beijing')->sum('age');

In this example, the value of $sum is 20, which is Alice’s age.

Similarly, if we have an array of orders, each order has a status attribute and a date attribute, and want to calculate the sum of the order amounts after January 1, 2019 in all completed orders, You can do it like this:

$orders = collect([
    ['id' => 1, 'status' => 'created', 'amount' => 10, 'date' => '2019-01-01'],
    ['id' => 2, 'status' => 'completed', 'amount' => 20, 'date' => '2019-01-05'],
    ['id' => 3, 'status' => 'cancelled', 'amount' => 30, 'date' => '2018-12-31'],
    ['id' => 4, 'status' => 'completed', 'amount' => 40, 'date' => '2019-02-01']
]);

$sum = $orders->where('status', 'completed')->where('date', '>', '2019-01-01')->sum('amount');

In this example, the value of $sum is 20, which is the amount of the second order.

To sum up, Laravel's sum function and where function are very convenient and practical, and can help us quickly complete the conditional sum operation. In actual development, we can flexibly use these functions according to different needs to improve development efficiency.

The above is the detailed content of laravel sum different conditions. 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
The Illusion of Inclusion: Addressing Isolation and Loneliness in Remote WorkThe Illusion of Inclusion: Addressing Isolation and Loneliness in Remote WorkApr 25, 2025 am 12:28 AM

Tocombatisolationandlonelinessinremotework,companiesshouldimplementregular,meaningfulinteractions,provideequalgrowthopportunities,andusetechnologyeffectively.1)Fostergenuineconnectionsthroughvirtualcoffeebreaksandpersonalsharing.2)Ensureremoteworkers

Laravel for Full-Stack Development: A Comprehensive GuideLaravel for Full-Stack Development: A Comprehensive GuideApr 25, 2025 am 12:27 AM

Laravelispopularforfull-stackdevelopmentbecauseitoffersaseamlessblendofbackendpowerandfrontendflexibility.1)Itsbackendcapabilities,likeEloquentORM,simplifydatabaseinteractions.2)TheBladetemplatingengineallowsforclean,dynamicHTMLtemplates.3)LaravelMix

Video Conferencing Showdown: Choosing the Right Platform for Remote MeetingsVideo Conferencing Showdown: Choosing the Right Platform for Remote MeetingsApr 25, 2025 am 12:26 AM

Key factors in choosing a video conferencing platform include user interface, security, and functionality. 1) The user interface should be intuitive, such as Zoom. 2) Security needs to be paid attention to, and Microsoft Teams provides end-to-end encryption. 3) Functions need to match requirements, GoogleMeet is suitable for short meetings, and CiscoWebex provides advanced collaboration tools.

What database versions are compatible with the latest Laravel?What database versions are compatible with the latest Laravel?Apr 25, 2025 am 12:25 AM

The latest version of Laravel10 is compatible with MySQL 5.7 and above, PostgreSQL 9.6 and above, SQLite 3.8.8 and above, SQLServer 2017 and above. These versions are chosen because they support Laravel's ORM features, such as the JSON data type of MySQL5.7, which improves query and storage efficiency.

The Benefits of Using Laravel as a Full-Stack FrameworkThe Benefits of Using Laravel as a Full-Stack FrameworkApr 25, 2025 am 12:24 AM

Laravelisanexcellentchoiceforfull-stackdevelopmentduetoitsrobustfeaturesandeaseofuse.1)ItsimplifiescomplextaskswithitsmodernPHPsyntaxandtoolslikeBladeforfront-endandEloquentORMforback-end.2)Laravel'secosystem,includingLaravelMixandArtisan,enhancespro

What is the latest version of Laravel?What is the latest version of Laravel?Apr 24, 2025 pm 05:17 PM

Laravel10,releasedonFebruary7,2023,isthelatestversion.Itfeatures:1)Improvederrorhandlingwithanewreportmethodintheexceptionhandler,2)EnhancedsupportforPHP8.1featureslikeenums,and3)AnewLaravel\Promptspackageforinteractivecommand-lineprompts.

How does the newest Laravel version simplify development?How does the newest Laravel version simplify development?Apr 24, 2025 pm 05:01 PM

ThelatestLaravelversionenhancesdevelopmentwith:1)Simplifiedroutingusingimplicitmodelbinding,2)EnhancedEloquentcapabilitieswithnewquerymethods,and3)ImprovedsupportformodernPHPfeatureslikenamedarguments,makingcodingmoreefficientandenjoyable.

Where can I find the release notes for the latest Laravel version?Where can I find the release notes for the latest Laravel version?Apr 24, 2025 pm 04:53 PM

You can find the release notes for the latest Laravel version at laravel.com/docs. 1) Release Notes provide detailed information on new features, bug fixes and improvements. 2) They contain examples and explanations to help understand the application of new features. 3) Pay attention to the potential complexity and backward compatibility issues of new features. 4) Regular review of release notes can keep it updated and inspire innovation.

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software