This talk is an overview of the history of the PHP language and major framework projects that have emerged in the last 5 years. It examines what we've learned in the development of these frameworks, how that education has been brought to bear in Lithium. Most of this talk ended up being me demoing and answering questions, so there's not a lot of content in the slides, sorry.
Lithium: The Framework for People Who Hate FrameworksNate Abele
This is the presentation was given at ConFoo on March 11th by Nate Abele and Joël Perras, and is an introduction to the architectural problems with other frameworks that Lithium was designed to address, and how it addresses them. It also introduces programming paradigms like functional and aspect-oriented programming which address issues that OOP doesn't account for.
Finally, the talk provides a quick overview of the innovative and unparalleled features that Lithium provides, including the data layer, which supports both relational and non-relational databases.
CakePHP 3 comes with a new ORM. This talk starts with a short history of how this library came to be and then walk through a series of examples from beginner to advanced for using the Querying features of the ORM.
Implementing Glacier's Tree Hash using recursive, functional programming in Perl5. With Keyword::Declare we get clean syntax for tail-call elimination. Result is a simple, fast, functional solution.
This talk is an overview of the history of the PHP language and major framework projects that have emerged in the last 5 years. It examines what we've learned in the development of these frameworks, how that education has been brought to bear in Lithium. Most of this talk ended up being me demoing and answering questions, so there's not a lot of content in the slides, sorry.
Lithium: The Framework for People Who Hate FrameworksNate Abele
This is the presentation was given at ConFoo on March 11th by Nate Abele and Joël Perras, and is an introduction to the architectural problems with other frameworks that Lithium was designed to address, and how it addresses them. It also introduces programming paradigms like functional and aspect-oriented programming which address issues that OOP doesn't account for.
Finally, the talk provides a quick overview of the innovative and unparalleled features that Lithium provides, including the data layer, which supports both relational and non-relational databases.
CakePHP 3 comes with a new ORM. This talk starts with a short history of how this library came to be and then walk through a series of examples from beginner to advanced for using the Querying features of the ORM.
Implementing Glacier's Tree Hash using recursive, functional programming in Perl5. With Keyword::Declare we get clean syntax for tail-call elimination. Result is a simple, fast, functional solution.
PHP 7.1 contains new exciting features and improvements that can facilitate the life of many PHP developers. During the talk I will show some of these new features like nullable types, catching of multiple exceptions, the curl HTTP/2 server push support, void return types, Class constant visibility, authenticated encryption in OpenSSL with GCM and CCM modes, and more.
Xlab #1: Advantages of functional programming in Java 8XSolve
Presentation from xlab workshop about functional programming components introduced to the Java 8. How to operate the streams and lambdas in theory and practice.
A lot of people using PHPunit for testing their source code. While I was observing my team I recognized most of them are only using the standard assertions like 'assertEquals()' and are complaining about how hard it is to test the code even when the tests are written first. This talk is about all the stuff not used on a daily basis and it digs deep into uncommon features of PHPUnit.
Perl6 regular expression ("regex") syntax has a number of improvements over the Perl5 syntax. The inclusion of grammars as first-class entities in the language makes many uses of regexes clearer, simpler, and more maintainable. This talk looks at a few improvements in the regex syntax and also at how grammars can help make regex use cleaner and simpler.
PHP Data Objects (PDO) provides a clear, simple (but powerful), unified API for working with all our favorite databases. Features include prepared statements with bound parameters (for all databases, even those that don’t natively support them), transactions, cursors, LOBs, and flexible error handling.
The Perforce Web Content Management System development team, lacking a pre-existing solution in PHP, designed and implemented their own object model and record layer to ease the interaction of the system with the Perforce Server. This session will focus on how users can access files in Perforce via a simple CRUD API, the subsystems exposed, and their usage.
Can't Miss Features of PHP 5.3 and 5.4Jeff Carouth
If you're like me you remember the days of PHP3 and PHP4; you remember when PHP5 was released, and how it was touted to change to your life. It's still changing and there are some features of PHP 5.3 and new ones coming with PHP 5.4 that will improve your code readability and reusability. Let's look at some touted features such as closures, namespaces, and traits, as well as some features being discussed for future releases.
PHP 7.1 contains new exciting features and improvements that can facilitate the life of many PHP developers. During the talk I will show some of these new features like nullable types, catching of multiple exceptions, the curl HTTP/2 server push support, void return types, Class constant visibility, authenticated encryption in OpenSSL with GCM and CCM modes, and more.
Xlab #1: Advantages of functional programming in Java 8XSolve
Presentation from xlab workshop about functional programming components introduced to the Java 8. How to operate the streams and lambdas in theory and practice.
A lot of people using PHPunit for testing their source code. While I was observing my team I recognized most of them are only using the standard assertions like 'assertEquals()' and are complaining about how hard it is to test the code even when the tests are written first. This talk is about all the stuff not used on a daily basis and it digs deep into uncommon features of PHPUnit.
Perl6 regular expression ("regex") syntax has a number of improvements over the Perl5 syntax. The inclusion of grammars as first-class entities in the language makes many uses of regexes clearer, simpler, and more maintainable. This talk looks at a few improvements in the regex syntax and also at how grammars can help make regex use cleaner and simpler.
PHP Data Objects (PDO) provides a clear, simple (but powerful), unified API for working with all our favorite databases. Features include prepared statements with bound parameters (for all databases, even those that don’t natively support them), transactions, cursors, LOBs, and flexible error handling.
The Perforce Web Content Management System development team, lacking a pre-existing solution in PHP, designed and implemented their own object model and record layer to ease the interaction of the system with the Perforce Server. This session will focus on how users can access files in Perforce via a simple CRUD API, the subsystems exposed, and their usage.
Can't Miss Features of PHP 5.3 and 5.4Jeff Carouth
If you're like me you remember the days of PHP3 and PHP4; you remember when PHP5 was released, and how it was touted to change to your life. It's still changing and there are some features of PHP 5.3 and new ones coming with PHP 5.4 that will improve your code readability and reusability. Let's look at some touted features such as closures, namespaces, and traits, as well as some features being discussed for future releases.
Building Lithium Apps (Like a Boss) was a workshop presented on the structure and philosophy of the Lithium framework and its applications, and how best to take advantage of them.
Come to this talk prepared to learn about the Doctrine PHP open source project. The Doctrine project has been around for over a decade and has evolved from database abstraction software that dates back to the PEAR days. The packages provided by the Doctrine project have been downloaded almost 500 million times from packagist. In this talk we will take you through how to get started with Doctrine and how to take advantage of some of the more advanced features.
PHP 8.1 brings Enums, one of the most requested features in PHP.
Enums, or Enumerations, allow creating strict and type-safe structures for fixed values. An Enum structure can hold a number of values that can also be backed with integer or string values.
In this comprehensive session, we will discover what Enums are, why they are useful, how to apply them on our applications including Drupal, and things to watch out for when using Enums.
Audience
This session is for those who are familiar with modern PHP practices such as Object Oriented Programming, and principles such as Liskov Substitution principle. A quick introduction will be given to catch up to speed, but familiarity with such concepts can help a lot.
What you will learn
What are Enums.
Why Enums are useful.
How to use Enums
Migrating from magic constants/values to Enums.
Backed Enums and storing/fetching Enum values with a database.
Using Enums in a Drupal context.
Caveats when using Enums.
Author
Ayesh Karunaratne is the author of PHP.Watch (https://php.watch), where he provides in-depth articles and documents on PHP and latest changes to the language.
PHP 8.0: https://php.watch/versions/8.0
PHP 8.1: https://php.watch/versions/8.1
Enums: https://php.watch/versions/8.1/enums
Mirror, mirror on the wall: Building a new PHP reflection library (DPC 2016)James Titcumb
Have you ever used PHP's built in reflection, only to find you can't do quite what you wanted? What about finding types for parameters or properties? What about reflecting on classes that aren't loaded, so that you can modify them directly?
Better Reflection is an awesome new library that uses magical time-warp techniques* (*actual magic or time-warp not guaranteed) to improve on PHP's built-in reflection by providing additional functionality. In this talk we'll cover what reflection is all about, explore the cool features of Better Reflection already implemented, the difficulties we faced actually writing the thing, and how you can use Better Reflection in your projects to maximise your reflection-fu.
Mirror, mirror on the wall - Building a new PHP reflection library (Nomad PHP...James Titcumb
Have you ever used PHP’s built in reflection, only to find you can’t do quite what you wanted? What about finding types for parameters or properties? What about reflecting on classes that aren’t loaded, so that you can modify them directly?
Better Reflection is an awesome new library that uses magical time-warp techniques* to improve on PHP’s built-in reflection by providing additional functionality. In this talk we’ll cover what reflection is all about, explore the cool features of Better Reflection already implemented, the difficulties we faced actually writing the thing, and how you can use Better Reflection in your projects to maximise your reflection-fu.
(*actual magic or time-warp not guaranteed)
Early in year 2000 Robert C. Martin, aka "Uncle Bob", introduced his thoughts in an article about some of five basic principles on object oriented programming to the open world. What he probably did not expect was, that this 5 principles became the standard for object oriented programming.
This Talk is about those principles: Single responsibility, Open/close, Liskov substitution, Interface segregation, and Dependency inversion, or shorter S.O.L.I.D. principles. It will give you an introduction about these principles, their meaning, and where they should be recognized and applied. Examples from my daily work will show you the practical aspects of those principles.
Design Patterns avec PHP 5.3, Symfony et PimpleHugo Hamon
Cette conférence présente deux grands motifs de conception : l'observateur et l'injection de dépendance. Ce sujet allie à la fois théorie et pratique. Le composant autonome EventDispatcher de Symfony ainsi que le conteneur d'injection de dépendance Pimple sont mis à l'honneur avec des exemples pratiques d'usage. Ces cas pratiques combinent du code de l'ORM Propel ainsi que le composant autonome Zend\Search\Lucene du Zend Framework 2
Similar to Looping the Loop with SPL Iterators (20)
In software engineering, the right architecture is essential for robust, scalable platforms. Wix has undergone a pivotal shift from event sourcing to a CRUD-based model for its microservices. This talk will chart the course of this pivotal journey.
Event sourcing, which records state changes as immutable events, provided robust auditing and "time travel" debugging for Wix Stores' microservices. Despite its benefits, the complexity it introduced in state management slowed development. Wix responded by adopting a simpler, unified CRUD model. This talk will explore the challenges of event sourcing and the advantages of Wix's new "CRUD on steroids" approach, which streamlines API integration and domain event management while preserving data integrity and system resilience.
Participants will gain valuable insights into Wix's strategies for ensuring atomicity in database updates and event production, as well as caching, materialization, and performance optimization techniques within a distributed system.
Join us to discover how Wix has mastered the art of balancing simplicity and extensibility, and learn how the re-adoption of the modest CRUD has turbocharged their development velocity, resilience, and scalability in a high-growth environment.
top nidhi software solution freedownloadvrstrong314
This presentation emphasizes the importance of data security and legal compliance for Nidhi companies in India. It highlights how online Nidhi software solutions, like Vector Nidhi Software, offer advanced features tailored to these needs. Key aspects include encryption, access controls, and audit trails to ensure data security. The software complies with regulatory guidelines from the MCA and RBI and adheres to Nidhi Rules, 2014. With customizable, user-friendly interfaces and real-time features, these Nidhi software solutions enhance efficiency, support growth, and provide exceptional member services. The presentation concludes with contact information for further inquiries.
AI Pilot Review: The World’s First Virtual Assistant Marketing SuiteGoogle
AI Pilot Review: The World’s First Virtual Assistant Marketing Suite
👉👉 Click Here To Get More Info 👇👇
https://sumonreview.com/ai-pilot-review/
AI Pilot Review: Key Features
✅Deploy AI expert bots in Any Niche With Just A Click
✅With one keyword, generate complete funnels, websites, landing pages, and more.
✅More than 85 AI features are included in the AI pilot.
✅No setup or configuration; use your voice (like Siri) to do whatever you want.
✅You Can Use AI Pilot To Create your version of AI Pilot And Charge People For It…
✅ZERO Manual Work With AI Pilot. Never write, Design, Or Code Again.
✅ZERO Limits On Features Or Usages
✅Use Our AI-powered Traffic To Get Hundreds Of Customers
✅No Complicated Setup: Get Up And Running In 2 Minutes
✅99.99% Up-Time Guaranteed
✅30 Days Money-Back Guarantee
✅ZERO Upfront Cost
See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
Prosigns: Transforming Business with Tailored Technology SolutionsProsigns
Unlocking Business Potential: Tailored Technology Solutions by Prosigns
Discover how Prosigns, a leading technology solutions provider, partners with businesses to drive innovation and success. Our presentation showcases our comprehensive range of services, including custom software development, web and mobile app development, AI & ML solutions, blockchain integration, DevOps services, and Microsoft Dynamics 365 support.
Custom Software Development: Prosigns specializes in creating bespoke software solutions that cater to your unique business needs. Our team of experts works closely with you to understand your requirements and deliver tailor-made software that enhances efficiency and drives growth.
Web and Mobile App Development: From responsive websites to intuitive mobile applications, Prosigns develops cutting-edge solutions that engage users and deliver seamless experiences across devices.
AI & ML Solutions: Harnessing the power of Artificial Intelligence and Machine Learning, Prosigns provides smart solutions that automate processes, provide valuable insights, and drive informed decision-making.
Blockchain Integration: Prosigns offers comprehensive blockchain solutions, including development, integration, and consulting services, enabling businesses to leverage blockchain technology for enhanced security, transparency, and efficiency.
DevOps Services: Prosigns' DevOps services streamline development and operations processes, ensuring faster and more reliable software delivery through automation and continuous integration.
Microsoft Dynamics 365 Support: Prosigns provides comprehensive support and maintenance services for Microsoft Dynamics 365, ensuring your system is always up-to-date, secure, and running smoothly.
Learn how our collaborative approach and dedication to excellence help businesses achieve their goals and stay ahead in today's digital landscape. From concept to deployment, Prosigns is your trusted partner for transforming ideas into reality and unlocking the full potential of your business.
Join us on a journey of innovation and growth. Let's partner for success with Prosigns.
Climate Science Flows: Enabling Petabyte-Scale Climate Analysis with the Eart...Globus
The Earth System Grid Federation (ESGF) is a global network of data servers that archives and distributes the planet’s largest collection of Earth system model output for thousands of climate and environmental scientists worldwide. Many of these petabyte-scale data archives are located in proximity to large high-performance computing (HPC) or cloud computing resources, but the primary workflow for data users consists of transferring data, and applying computations on a different system. As a part of the ESGF 2.0 US project (funded by the United States Department of Energy Office of Science), we developed pre-defined data workflows, which can be run on-demand, capable of applying many data reduction and data analysis to the large ESGF data archives, transferring only the resultant analysis (ex. visualizations, smaller data files). In this talk, we will showcase a few of these workflows, highlighting how Globus Flows can be used for petabyte-scale climate analysis.
May Marketo Masterclass, London MUG May 22 2024.pdfAdele Miller
Can't make Adobe Summit in Vegas? No sweat because the EMEA Marketo Engage Champions are coming to London to share their Summit sessions, insights and more!
This is a MUG with a twist you don't want to miss.
First Steps with Globus Compute Multi-User EndpointsGlobus
In this presentation we will share our experiences around getting started with the Globus Compute multi-user endpoint. Working with the Pharmacology group at the University of Auckland, we have previously written an application using Globus Compute that can offload computationally expensive steps in the researcher's workflows, which they wish to manage from their familiar Windows environments, onto the NeSI (New Zealand eScience Infrastructure) cluster. Some of the challenges we have encountered were that each researcher had to set up and manage their own single-user globus compute endpoint and that the workloads had varying resource requirements (CPUs, memory and wall time) between different runs. We hope that the multi-user endpoint will help to address these challenges and share an update on our progress here.
Providing Globus Services to Users of JASMIN for Environmental Data AnalysisGlobus
JASMIN is the UK’s high-performance data analysis platform for environmental science, operated by STFC on behalf of the UK Natural Environment Research Council (NERC). In addition to its role in hosting the CEDA Archive (NERC’s long-term repository for climate, atmospheric science & Earth observation data in the UK), JASMIN provides a collaborative platform to a community of around 2,000 scientists in the UK and beyond, providing nearly 400 environmental science projects with working space, compute resources and tools to facilitate their work. High-performance data transfer into and out of JASMIN has always been a key feature, with many scientists bringing model outputs from supercomputers elsewhere in the UK, to analyse against observational or other model data in the CEDA Archive. A growing number of JASMIN users are now realising the benefits of using the Globus service to provide reliable and efficient data movement and other tasks in this and other contexts. Further use cases involve long-distance (intercontinental) transfers to and from JASMIN, and collecting results from a mobile atmospheric radar system, pushing data to JASMIN via a lightweight Globus deployment. We provide details of how Globus fits into our current infrastructure, our experience of the recent migration to GCSv5.4, and of our interest in developing use of the wider ecosystem of Globus services for the benefit of our user community.
Software Engineering, Software Consulting, Tech Lead.
Spring Boot, Spring Cloud, Spring Core, Spring JDBC, Spring Security,
Spring Transaction, Spring MVC,
Log4j, REST/SOAP WEB-SERVICES.
Accelerate Enterprise Software Engineering with PlatformlessWSO2
Key takeaways:
Challenges of building platforms and the benefits of platformless.
Key principles of platformless, including API-first, cloud-native middleware, platform engineering, and developer experience.
How Choreo enables the platformless experience.
How key concepts like application architecture, domain-driven design, zero trust, and cell-based architecture are inherently a part of Choreo.
Demo of an end-to-end app built and deployed on Choreo.
In 2015, I used to write extensions for Joomla, WordPress, phpBB3, etc and I ...Juraj Vysvader
In 2015, I used to write extensions for Joomla, WordPress, phpBB3, etc and I didn't get rich from it but it did have 63K downloads (powered possible tens of thousands of websites).
Listen to the keynote address and hear about the latest developments from Rachana Ananthakrishnan and Ian Foster who review the updates to the Globus Platform and Service, and the relevance of Globus to the scientific community as an automation platform to accelerate scientific discovery.
Top Features to Include in Your Winzo Clone App for Business Growth (4).pptxrickgrimesss22
Discover the essential features to incorporate in your Winzo clone app to boost business growth, enhance user engagement, and drive revenue. Learn how to create a compelling gaming experience that stands out in the competitive market.
Innovating Inference - Remote Triggering of Large Language Models on HPC Clus...Globus
Large Language Models (LLMs) are currently the center of attention in the tech world, particularly for their potential to advance research. In this presentation, we'll explore a straightforward and effective method for quickly initiating inference runs on supercomputers using the vLLM tool with Globus Compute, specifically on the Polaris system at ALCF. We'll begin by briefly discussing the popularity and applications of LLMs in various fields. Following this, we will introduce the vLLM tool, and explain how it integrates with Globus Compute to efficiently manage LLM operations on Polaris. Attendees will learn the practical aspects of setting up and remotely triggering LLMs from local machines, focusing on ease of use and efficiency. This talk is ideal for researchers and practitioners looking to leverage the power of LLMs in their work, offering a clear guide to harnessing supercomputing resources for quick and effective LLM inference.
Large Language Models and the End of ProgrammingMatt Welsh
Talk by Matt Welsh at Craft Conference 2024 on the impact that Large Language Models will have on the future of software development. In this talk, I discuss the ways in which LLMs will impact the software industry, from replacing human software developers with AI, to replacing conventional software with models that perform reasoning, computation, and problem-solving.
2. Looping the Loop with SPL
Iterators
What is an Iterator?
An Iterator is an object that enables a programmer to
traverse a container, particularly lists.
3. Looping the Loop with SPL
Iterators
What is an Iterator?
$dataSet = ['A', 'B', 'C'];
foreach($dataSet as $key => $value) {
echo "{$key} => {$value}", PHP_EOL;
}
4. Looping the Loop with SPL
Iterators
What is an Iterator?
0 => A
1 => B
2 => C
5. Looping the Loop with SPL
Iterators
What is an Iterator?
$data = ['A', 'B', 'C'];
$dataSet = new ArrayIterator($data);
foreach($dataSet as $key => $value) {
echo "{$key} => {$value}", PHP_EOL;
}
6. Looping the Loop with SPL
Iterators
What is an Iterator?
0 => A
1 => B
2 => C
7. Looping the Loop with SPL
Iterators
What is an Iterator?
interface Iterator extends Traversable {
/* Methods */
abstract public current ( void ) : mixed
abstract public key ( void ) : scalar
abstract public next ( void ) : void
abstract public rewind ( void ) : void
abstract public valid ( void ) : bool
}
8. Looping the Loop with SPL
Iterators
What is an Iterator?
$data = ['A', 'B', 'C’];
$iterator = new ArrayIterator($data);
$iterator->rewind();
while ($iterator->valid()) {
$key = $iterator->key();
$value = $iterator->current();
echo "{$key} => {$value}", PHP_EOL;
$iterator->next();
}
9. Looping the Loop with SPL
Iterators
What is an Iterator?
0 => A
1 => B
2 => C
10. Looping the Loop with SPL
Iterators
The Iterable Tree
iterable
array
Traversable
Iterator
Generator
IteratorAggregate
11. Looping the Loop with SPL
Iterators
The Iterable Tree
Not all iterables are equal
You can count the elements in an array !
Can you count the elements in an Iterator?
12. Looping the Loop with SPL
Iterators
The Iterable Tree
Not all iterables are equal
You can access the elements of an array by
their index !
Can you access the elements of an Iterator
by index ?
13. Looping the Loop with SPL
Iterators
The Iterable Tree
Not all iterables are equal
You can rewind an Iterator !
Can you rewind a Generator ?
14. Looping the Loop with SPL
Iterators
The Iterable Tree
Not all iterables are equal
Iterator_* functions (e.g. iterator_to_array)
work on Iterators ?
Can you use iterator_* functions on an
IteratorAggregate ?
16. Looping the Loop with SPL
Iterators
class UserRepository {
// ...
public function all(): array {
$userQuery = 'SELECT * FROM `users` ...';
$statement = $this->pdo->prepare($userQuery);
$statement->execute();
$users = $statement->fetchAll();
return array_map(fn(array $user): User => User::fromArray($user), $users);
}
}
17. Looping the Loop with SPL
Iterators
class UserRepository {
// ...
/**
* @return User[]
*/
public function all(): array {
$userQuery = 'SELECT * FROM `users` ...';
$statement = $this->pdo->prepare($userQuery);
$statement->execute();
$users = $statement->fetchAll();
return array_map(fn(array $user): User => User::fromArray($user), $users);
}
}
18. Looping the Loop with SPL
Iterators
class UserList extends ArrayIterator {
}
19. Looping the Loop with SPL
Iterators
ArrayIterator
Implements:
Countable
ArrayAccess
Serializable
SeekableIterator (which entends Iterator)
20. Looping the Loop with SPL
Iterators
class UserRepository {
// ...
public function all(): UserList {
$userQuery = 'SELECT * FROM `users` ...';
$statement = $this->pdo->prepare($userQuery);
$statement->execute();
$users = $statement->fetchAll();
return new UserList(
array_map(fn(array $user): User => User::fromArray($user), $users)
);
}
}
21. Looping the Loop with SPL
Iterators
ArrayIterator
Implements:
Countable
22. Looping the Loop with SPL
Iterators
ArrayIterator – Countable
$userData = ['user1', 'user2', 'user3', 'user4'];
$userList = new UserList($userData);
$userCount = count($userList);
echo "There are {$userCount} users in this list", PHP_EOL;
23. Looping the Loop with SPL
Iterators
ArrayIterator – Countable
$userData = ['user1', 'user2', 'user3', 'user4'];
$userList = new UserList($userData);
echo "There are {$userList->count()} users in this list", PHP_EOL;
24. Looping the Loop with SPL
Iterators
ArrayIterator – Countable
There are 4 users in this list
25. Looping the Loop with SPL
Iterators
ArrayIterator
Implements:
Countable
ArrayAccess
26. Looping the Loop with SPL
Iterators
ArrayIterator – ArrayAccess
$userData = ['user1', 'user2', 'user3', 'user4'];
$userList = new UserList($userData);
echo "The 3rd entry in the list is {$userList[2]}", PHP_EOL;
27. Looping the Loop with SPL
Iterators
ArrayIterator – ArrayAccess
The 3rd entry in the list is user3
28. Looping the Loop with SPL
Iterators
ArrayIterator
Implements:
Countable
ArrayAccess
Serializable
29. Looping the Loop with SPL
Iterators
ArrayIterator – Serializable
$userData = ['user1', 'user2', 'user3', 'user4'];
$userList = new UserList($userData);
var_dump(serialize($userList));
30. Looping the Loop with SPL
Iterators
ArrayIterator – Serializable
string(117)
"O:8:"UserList":4:{i:0;i:0;i:1;a:4:{i:0;s:5:"user1";
i:1;s:5:"user2";i:2;s:5:"user3";i:3;s:5:"user4";}i:2;
a:0:{}i:3;N;}"
31. Looping the Loop with SPL
Iterators
ArrayIterator
Implements:
Countable
ArrayAccess
Serializable
SeekableIterator (which entends Iterator)
32. Looping the Loop with SPL
Iterators
ArrayIterator – SeekableIterator
$userData = ['user1', 'user2', 'user3', 'user4'];
$userList = new UserList($userData);
$userList->seek(2);
while ($userList->valid()) {
echo $userList->current(), PHP_EOL;
$userList->next();
}
33. Looping the Loop with SPL
Iterators
ArrayIterator – SeekableIterator
user3
user4
34. Looping the Loop with SPL
Iterators
ArrayIterator
Implements:
Countable
ArrayAccess
Serializable
SeekableIterator (which entends Iterator)
Also provides methods for sorting
Doesn’t work with array_* functions
44. Looping the Loop with SPL
Iterators
class UserRepository {
// ...
public function all(): UserList {
$userQuery = 'SELECT * FROM `users` ...';
$statement = $this->pdo->prepare($userQuery);
$statement->execute();
$users = $statement->fetchAll();
return new UserList(
array_map(fn(array $user): User => User::fromArray($user), $users)
);
}
}
45. Looping the Loop with SPL
Iterators
class UserRepository {
// ...
public function all(): Generator {
$userQuery = 'SELECT * FROM `users` ...';
$statement = $this->pdo->prepare($userQuery);
$statement->execute();
while ($user = $statement->fetch()) {
yield User::fromArray($user);
}
}
}
46. Looping the Loop with SPL
Iterators
class UserRepository {
// ...
/**
* @return Generator|User[]
*/
public function all(): Generator {
$userQuery = 'SELECT * FROM `users` ...';
$statement = $this->pdo->prepare($userQuery);
$statement->execute();
while ($user = $statement->fetch()) {
yield User::fromArray($user);
}
}
}
47. Looping the Loop with SPL
Iterators
class UserList implements IteratorAggregate {
private PDOStatement $pdoStatement;
public function __construct(PDOStatement $pdoStatement) {
$this->pdoStatement = $pdoStatement;
}
public function getIterator(): Traversable {
$statement->execute();
while ($user = $this->pdoStatement->fetch()) {
yield User::fromArray($user);
}
}
}
48. Looping the Loop with SPL
Iterators
class UserRepository {
// ...
public function all(): UserList {
$userQuery = 'SELECT * FROM `users` ...';
$statement = $this->pdo->prepare($userQuery);
return new UserList($statement);
}
}
50. Looping the Loop with SPL
Iterators
A Functional Guide to Cat Herding with PHP
Generators
https://markbakeruk.net/2016/01/19/a-functional-guide-to-cat-
herding-with-php-generators/
51. Looping the Loop with SPL
Iterators
Filtering and Mapping with SPL Iterators
https://markbakeruk.net/2020/01/05/filtering-and-mapping-with-
spl-iterators/
52. Looping the Loop with SPL
Iterators
Parallel Looping in PHP with SPL’s
MultipleIterator
https://markbakeruk.net/2019/12/31/parallel-looping-in-php-with-
spls-multipleiterator/
53. Looping the Loop with SPL
Iterators
Iterating PHP Iterators
By Cal Evans
https://leanpub.com/iteratingphpiterators
54. Looping the Loop with SPL
Iterators
Mastering the SPL Library
by Joshua Thijssen
https://www.phparch.com/books/mastering-the-spl-library/
55. Who am I?
Mark Baker
Senior Software Engineer
MessageBird BV, Amsterdam
Coordinator and Developer of:
Open Source PHPOffice library
PHPExcel, PHPWord, PHPPowerPoint, PHPProject, PHPVisio
Minor contributor to PHP core (SPL Datastructures)
Other small open source libraries available on github
@Mark_Baker
https://github.com/MarkBaker
http://uk.linkedin.com/pub/mark-baker/b/572/171
http://markbakeruk.net