SlideShare a Scribd company logo
SOLID Design Principles
Thanh Huynh
PHP Developer
Agenda
• Coupling
• Cohesion
• S.O.L.I.D
• Other principles
• References
Coupling
• Coupling measure of how much a module
(package, class, method) relies on other
modules.
https://msdn.microsoft.com/en-us/library/hh404091.aspx
Tight-coupling
Cohesion
• Cohesion - A measure of how closely related
the members (classes, methods, functionality
within a method) of a module are to the other
members of the same module.
Loose Coupling and High Cohesion
Loose Coupling and High Cohesion
Single Responsibility Principle
• Objects should have one, and only one,
purpose.
Sample
Open/Closed Principle
• Classes should be open to extension, but
closed to modification.
Liskov Substitution Principle
• Objects of the same interface should be
interchangeable without affecting the
behavior of the client program.
Interface Segregation Principle
• Client code should not be forced to
implement an interface that it does not use.
Dependency Inversion Principle
• High level modules should not depend upon
low level modules. Both should
depend upon abstractions.
Other principles
• DRY - Don’t Repeat Yourself
• KISS - Keep It Simple, Stupid
• YAGNI - You Aren’t Gonna Need It
• …
References
• https://
speakerdeck.com/super_marek/modernising-
the-legacy-phpconf-asia
• http://www.ibm.com/developerworks/library
/os-php-7oohabits
• https://leanpub.com/cleanphp
• Laracasts SOLID
Thank you & Q.A

More Related Content

Similar to SOLID in PHP

Clean code: SOLID
Clean code: SOLIDClean code: SOLID
Clean code: SOLID
Indeema Software Inc.
 
Clean code: SOLID (iOS)
Clean code: SOLID (iOS)Clean code: SOLID (iOS)
Clean code: SOLID (iOS)
Maksym Husar
 
Evgeniy Khyst - why does software design matter and how to keep it in good shape
Evgeniy Khyst - why does software design matter and how to keep it in good shapeEvgeniy Khyst - why does software design matter and how to keep it in good shape
Evgeniy Khyst - why does software design matter and how to keep it in good shape
Anna Shymchenko
 
Design Patterns .Net
Design Patterns .NetDesign Patterns .Net
Design Patterns .Net
Hariom Shah
 
Solid
SolidSolid
Soild principles
Soild principlesSoild principles
Soild principles
Avidnyat Chiddarwar
 
UNIT IV DESIGN PATTERNS.pptx
UNIT IV DESIGN PATTERNS.pptxUNIT IV DESIGN PATTERNS.pptx
UNIT IV DESIGN PATTERNS.pptx
anguraju1
 
OO Design Principles
OO Design PrinciplesOO Design Principles
OO Design Principles
Anju Kanjirathingal
 
Object Oriented Programming Ch3 SRP, DIP, ISP
Object Oriented Programming Ch3 SRP, DIP, ISPObject Oriented Programming Ch3 SRP, DIP, ISP
Object Oriented Programming Ch3 SRP, DIP, ISP
Chihyang Li
 
Object Oriented, Design patterns and data modelling worshop
Object Oriented, Design patterns and data modelling worshopObject Oriented, Design patterns and data modelling worshop
Object Oriented, Design patterns and data modelling worshop
Mohammad Shawahneh
 
2009 training - tim m - object oriented programming
2009   training - tim m - object oriented programming2009   training - tim m - object oriented programming
2009 training - tim m - object oriented programming
Tim Mahy
 
Solid
SolidSolid
Solid
Romexsoft
 
The Solid Principles
The Solid PrinciplesThe Solid Principles
The Solid Principles
Luke Smith
 
Design patterns
Design patternsDesign patterns
Design patterns
Majid Qafouri
 
Grasp principles
Grasp principlesGrasp principles
Grasp principles
Yuriy Shapovalov
 
Agile technique
Agile techniqueAgile technique
Agile technique
Anh Tu Pham Mr
 
Daniel leon design principles in the functional world
Daniel leon   design principles in the functional worldDaniel leon   design principles in the functional world
Daniel leon design principles in the functional world
Codecamp Romania
 
Solid Principles
Solid PrinciplesSolid Principles
Solid Principles
Gaurav Mishra
 
Design Principles to design Patterns
Design Principles to design PatternsDesign Principles to design Patterns
Design Principles to design Patterns
Faizan Haider
 
Effective Software Design
Effective Software Design Effective Software Design
Effective Software Design
Darshan Ashpal
 

Similar to SOLID in PHP (20)

Clean code: SOLID
Clean code: SOLIDClean code: SOLID
Clean code: SOLID
 
Clean code: SOLID (iOS)
Clean code: SOLID (iOS)Clean code: SOLID (iOS)
Clean code: SOLID (iOS)
 
Evgeniy Khyst - why does software design matter and how to keep it in good shape
Evgeniy Khyst - why does software design matter and how to keep it in good shapeEvgeniy Khyst - why does software design matter and how to keep it in good shape
Evgeniy Khyst - why does software design matter and how to keep it in good shape
 
Design Patterns .Net
Design Patterns .NetDesign Patterns .Net
Design Patterns .Net
 
Solid
SolidSolid
Solid
 
Soild principles
Soild principlesSoild principles
Soild principles
 
UNIT IV DESIGN PATTERNS.pptx
UNIT IV DESIGN PATTERNS.pptxUNIT IV DESIGN PATTERNS.pptx
UNIT IV DESIGN PATTERNS.pptx
 
OO Design Principles
OO Design PrinciplesOO Design Principles
OO Design Principles
 
Object Oriented Programming Ch3 SRP, DIP, ISP
Object Oriented Programming Ch3 SRP, DIP, ISPObject Oriented Programming Ch3 SRP, DIP, ISP
Object Oriented Programming Ch3 SRP, DIP, ISP
 
Object Oriented, Design patterns and data modelling worshop
Object Oriented, Design patterns and data modelling worshopObject Oriented, Design patterns and data modelling worshop
Object Oriented, Design patterns and data modelling worshop
 
2009 training - tim m - object oriented programming
2009   training - tim m - object oriented programming2009   training - tim m - object oriented programming
2009 training - tim m - object oriented programming
 
Solid
SolidSolid
Solid
 
The Solid Principles
The Solid PrinciplesThe Solid Principles
The Solid Principles
 
Design patterns
Design patternsDesign patterns
Design patterns
 
Grasp principles
Grasp principlesGrasp principles
Grasp principles
 
Agile technique
Agile techniqueAgile technique
Agile technique
 
Daniel leon design principles in the functional world
Daniel leon   design principles in the functional worldDaniel leon   design principles in the functional world
Daniel leon design principles in the functional world
 
Solid Principles
Solid PrinciplesSolid Principles
Solid Principles
 
Design Principles to design Patterns
Design Principles to design PatternsDesign Principles to design Patterns
Design Principles to design Patterns
 
Effective Software Design
Effective Software Design Effective Software Design
Effective Software Design
 

Recently uploaded

Using Query Store in Azure PostgreSQL to Understand Query Performance
Using Query Store in Azure PostgreSQL to Understand Query PerformanceUsing Query Store in Azure PostgreSQL to Understand Query Performance
Using Query Store in Azure PostgreSQL to Understand Query Performance
Grant Fritchey
 
LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOMLORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
lorraineandreiamcidl
 
What is Master Data Management by PiLog Group
What is Master Data Management by PiLog GroupWhat is Master Data Management by PiLog Group
What is Master Data Management by PiLog Group
aymanquadri279
 
Fundamentals of Programming and Language Processors
Fundamentals of Programming and Language ProcessorsFundamentals of Programming and Language Processors
Fundamentals of Programming and Language Processors
Rakesh Kumar R
 
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian CompaniesE-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
Quickdice ERP
 
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
Crescat
 
Microservice Teams - How the cloud changes the way we work
Microservice Teams - How the cloud changes the way we workMicroservice Teams - How the cloud changes the way we work
Microservice Teams - How the cloud changes the way we work
Sven Peters
 
LORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptx
LORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptxLORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptx
LORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptx
lorraineandreiamcidl
 
Empowering Growth with Best Software Development Company in Noida - Deuglo
Empowering Growth with Best Software  Development Company in Noida - DeugloEmpowering Growth with Best Software  Development Company in Noida - Deuglo
Empowering Growth with Best Software Development Company in Noida - Deuglo
Deuglo Infosystem Pvt Ltd
 
Webinar On-Demand: Using Flutter for Embedded
Webinar On-Demand: Using Flutter for EmbeddedWebinar On-Demand: Using Flutter for Embedded
Webinar On-Demand: Using Flutter for Embedded
ICS
 
GraphSummit Paris - The art of the possible with Graph Technology
GraphSummit Paris - The art of the possible with Graph TechnologyGraphSummit Paris - The art of the possible with Graph Technology
GraphSummit Paris - The art of the possible with Graph Technology
Neo4j
 
Revolutionizing Visual Effects Mastering AI Face Swaps.pdf
Revolutionizing Visual Effects Mastering AI Face Swaps.pdfRevolutionizing Visual Effects Mastering AI Face Swaps.pdf
Revolutionizing Visual Effects Mastering AI Face Swaps.pdf
Undress Baby
 
Vitthal Shirke Java Microservices Resume.pdf
Vitthal Shirke Java Microservices Resume.pdfVitthal Shirke Java Microservices Resume.pdf
Vitthal Shirke Java Microservices Resume.pdf
Vitthal Shirke
 
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise EditionWhy Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Envertis Software Solutions
 
ALGIT - Assembly Line for Green IT - Numbers, Data, Facts
ALGIT - Assembly Line for Green IT - Numbers, Data, FactsALGIT - Assembly Line for Green IT - Numbers, Data, Facts
ALGIT - Assembly Line for Green IT - Numbers, Data, Facts
Green Software Development
 
Oracle Database 19c New Features for DBAs and Developers.pptx
Oracle Database 19c New Features for DBAs and Developers.pptxOracle Database 19c New Features for DBAs and Developers.pptx
Oracle Database 19c New Features for DBAs and Developers.pptx
Remote DBA Services
 
2024 eCommerceDays Toulouse - Sylius 2.0.pdf
2024 eCommerceDays Toulouse - Sylius 2.0.pdf2024 eCommerceDays Toulouse - Sylius 2.0.pdf
2024 eCommerceDays Toulouse - Sylius 2.0.pdf
Łukasz Chruściel
 
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppAI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
Google
 
E-commerce Development Services- Hornet Dynamics
E-commerce Development Services- Hornet DynamicsE-commerce Development Services- Hornet Dynamics
E-commerce Development Services- Hornet Dynamics
Hornet Dynamics
 
DDS-Security 1.2 - What's New? Stronger security for long-running systems
DDS-Security 1.2 - What's New? Stronger security for long-running systemsDDS-Security 1.2 - What's New? Stronger security for long-running systems
DDS-Security 1.2 - What's New? Stronger security for long-running systems
Gerardo Pardo-Castellote
 

Recently uploaded (20)

Using Query Store in Azure PostgreSQL to Understand Query Performance
Using Query Store in Azure PostgreSQL to Understand Query PerformanceUsing Query Store in Azure PostgreSQL to Understand Query Performance
Using Query Store in Azure PostgreSQL to Understand Query Performance
 
LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOMLORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
LORRAINE ANDREI_LEQUIGAN_HOW TO USE ZOOM
 
What is Master Data Management by PiLog Group
What is Master Data Management by PiLog GroupWhat is Master Data Management by PiLog Group
What is Master Data Management by PiLog Group
 
Fundamentals of Programming and Language Processors
Fundamentals of Programming and Language ProcessorsFundamentals of Programming and Language Processors
Fundamentals of Programming and Language Processors
 
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian CompaniesE-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
E-Invoicing Implementation: A Step-by-Step Guide for Saudi Arabian Companies
 
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...
 
Microservice Teams - How the cloud changes the way we work
Microservice Teams - How the cloud changes the way we workMicroservice Teams - How the cloud changes the way we work
Microservice Teams - How the cloud changes the way we work
 
LORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptx
LORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptxLORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptx
LORRAINE ANDREI_LEQUIGAN_HOW TO USE WHATSAPP.pptx
 
Empowering Growth with Best Software Development Company in Noida - Deuglo
Empowering Growth with Best Software  Development Company in Noida - DeugloEmpowering Growth with Best Software  Development Company in Noida - Deuglo
Empowering Growth with Best Software Development Company in Noida - Deuglo
 
Webinar On-Demand: Using Flutter for Embedded
Webinar On-Demand: Using Flutter for EmbeddedWebinar On-Demand: Using Flutter for Embedded
Webinar On-Demand: Using Flutter for Embedded
 
GraphSummit Paris - The art of the possible with Graph Technology
GraphSummit Paris - The art of the possible with Graph TechnologyGraphSummit Paris - The art of the possible with Graph Technology
GraphSummit Paris - The art of the possible with Graph Technology
 
Revolutionizing Visual Effects Mastering AI Face Swaps.pdf
Revolutionizing Visual Effects Mastering AI Face Swaps.pdfRevolutionizing Visual Effects Mastering AI Face Swaps.pdf
Revolutionizing Visual Effects Mastering AI Face Swaps.pdf
 
Vitthal Shirke Java Microservices Resume.pdf
Vitthal Shirke Java Microservices Resume.pdfVitthal Shirke Java Microservices Resume.pdf
Vitthal Shirke Java Microservices Resume.pdf
 
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise EditionWhy Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
Why Choose Odoo 17 Community & How it differs from Odoo 17 Enterprise Edition
 
ALGIT - Assembly Line for Green IT - Numbers, Data, Facts
ALGIT - Assembly Line for Green IT - Numbers, Data, FactsALGIT - Assembly Line for Green IT - Numbers, Data, Facts
ALGIT - Assembly Line for Green IT - Numbers, Data, Facts
 
Oracle Database 19c New Features for DBAs and Developers.pptx
Oracle Database 19c New Features for DBAs and Developers.pptxOracle Database 19c New Features for DBAs and Developers.pptx
Oracle Database 19c New Features for DBAs and Developers.pptx
 
2024 eCommerceDays Toulouse - Sylius 2.0.pdf
2024 eCommerceDays Toulouse - Sylius 2.0.pdf2024 eCommerceDays Toulouse - Sylius 2.0.pdf
2024 eCommerceDays Toulouse - Sylius 2.0.pdf
 
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppAI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
 
E-commerce Development Services- Hornet Dynamics
E-commerce Development Services- Hornet DynamicsE-commerce Development Services- Hornet Dynamics
E-commerce Development Services- Hornet Dynamics
 
DDS-Security 1.2 - What's New? Stronger security for long-running systems
DDS-Security 1.2 - What's New? Stronger security for long-running systemsDDS-Security 1.2 - What's New? Stronger security for long-running systems
DDS-Security 1.2 - What's New? Stronger security for long-running systems
 

SOLID in PHP

Editor's Notes

  1. In 1994, four authors Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides published a book titled Design Patterns - Elements of Reusable Object-Oriented Software which initiated the concept of Design Pattern in Software development.
  2. PasswordBroker.php sendReminder - Laravel