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PHP resource list, php resource

A PHP resource list, including: libraries, frameworks, templates, security, code analysis, logs, third-party libraries, configuration Tools, web tools, books, ebooks, classic blog posts, and more.

This content can also be browsed on related projects on github.

English version: awesome-php

Chinese version: awesome-php-zh_CN

The content of the awesome-php-zh_CN project on github will be updated regularly based on the content of the awesome-php project.

Dependency Management Dependency Management

Dependency and package management library

Composer/Packagist - A package and dependency manager
Composer Installers - A multi-framework Composer library installer
Pickle - A PHP extension installer

Other dependency management Dependency Management Extras

Other related dependency management

Satis - A generator for static Composer repositories
Toran Proxy - A static Composer repository and proxy
Composition - A library that checks the Composer environment at runtime
Version - A semantic version parsing and comparison library
NameSpacer - A library that converts underscores into namespaces
Patch Installer - A library for installing patches using Composer
Composer Checker - A tool to verify Composer configuration

Frameworks

Web Development Framework

Symfony2 - a framework composed of independent components
Zend Framework 2 - Another framework composed of independent components
Laravel 5 - Another PHP framework
Aura PHP - an independent component framework
Yii2 - Another PHP framework
Nette - Another framework composed of individual components
PPI Framework 2 - an interoperability framework
CakePHP - a rapid application development framework
Phalcon - Framework implemented via C extensions

Framework Extras

Other web development frameworks

Symfony CMF - A content management framework for creating custom CMS
Knp RAD Bundle - Rapid Application (RAD) package for Symfony 2

Framework Components

Independent components from web development frameworks

Symfony2 Components - Symfony2 components
Zend Framework 2 Components - ZF2 Components
Aura Components - PHP5.4 component package
Hoa Project - Another PHP component package
League of Extraordinary Packages - a PHP software development group

Micro Frameworks

Microframework and Routing

Silex - a micro-framework based on Symfony2 components
Slim - Another simple micro framework
Bullet PHP - A micro-framework for building REST APIs

Micro Framework Extras

Other related micro-frameworks and routing

Silex Skeleton - Silex’s project architecture
Silex Web Profiler - a Silex web debugging tool
Slim Skeleton - Slim Architecture
Slim View - A collection of Slim custom views

Routing Routers

Library for handling application routing

Fast Route - a fast routing library
Route - a routing library based on Fast Route
Pux - Another fast routing library
Klein - A flexible routing library.

Templating

Libraries and tools for templating and lexical analysis

Twig - a comprehensive template language
Twig Cache Extension - A template fragment caching library for Twig
Mustache - A PHP implementation of the Mustache template language
Phly Mustache - Another PHP implementation of the Mustache template language
MtHaml - A PHP implementation of HAML template language
PHPTAL - A PHP implementation of the TAL template language
Plates - a native PHP template library
Lex - a lightweight template parser

Static Site Generators

Tools used to generate pre-processed content for web pages

Sculpin - Tool for converting Markdown and Twig to static HTML
Phrozn - Another tool to convert Textile, Markdown and Twig to HTML

HTTP

Libraries for HTTP and website scraping

Guzzle - A comprehensive HTTP client
Buzz - Another HTTP client
Requests - A simple HTTP library
HTTPFul - a chained HTTP library
Goutte - a simple web crawler
PHP VCR - A library for recording and replaying HTTP requests

Middlewares

Libraries for building applications using middleware

Stack - A stackable middleware library for Silex/Symfony
Slim Middleware - A collection of custom middleware for Slim
Conduit - Sencha Connect connects to a port of PHP.

URL

Library for parsing URLs

Purl - a URL processing library
PHP Domain Parser - a local prefix parsing library
Url - a simple URL processing library

Email

Library for sending and parsing emails

SwiftMailer - an email solution
PHPMailer - Another email solution
Fetch - an IMAP library
Email Reply Parser - a library for email reply parsing
Stampie - a mail service library, similar to SendGrid, PostMark, MailGun and Mandrill.
CssToInlineStyles - A library for inline CSS in email templates

Files Files

Library for file processing and MIME type detection

Gaufrette - a file system abstraction layer
Flysystem - Another file system abstraction layer
Canal - A library for detecting internet media types
Apache MIME Types - A library for parsing Apache MIME types
Ferret - a MIME detection library
Hoa Mime - Another MIME detection library
Lurker - an asset tracking library
PHP File Locator - A library for locating files in large projects
PHP FFmpeg - A library for FFmpeg video packaging
CSV - A CSV data processing library

Streams

Library for processing streams

Streamer - A simple object-oriented stream wrapper library

Dependency Injection

Library that implements the dependency injection design pattern

Pimple - a small dependency injection container
Auryn - Another dependency injection container
Container - Another scalable dependency injection container
PHP DI - a dependency injection using annotations
Acclimate - A common interface for dependency injection containers and service location

Image Imagery

Library for processing images

Imagine - an image processing library
PHP Image Workshop - Another image processing library
Intervention Image - Another image processing library
GIF Frame Extractor - a library for extracting GIF animation frame information
GIF Creator - A library for creating animated GIFs from multiple images
Image With Text - A library for embedding text in images
Color Extractor - A library for extracting colors from images
Glide - A library for on-demand image processing

Testing

Library for testing code and generating test data

PHPUnit - a unit testing framework
DBUnit - a database testing library for PHPUnit
ParaTest - a parallel testing library for PHPUnit
PHPSpec - a unit testing library based on function point design
Codeception - a full stack testing framework
AspectMock - A PHPUnit/Codeception mocking framework.
Atoum - a simple testing library
Mockery - A library of mock objects for testing
Phake - Another library for mock objects for testing
Prophecy - a highly optional simulation framework
Faker - a fake data generation library
Samsui - Another fake data generation library
Alice - Expressive generation library
Behat - A Behavior Driven Development (BDD) testing framework
Pho - Another testing framework for behavior-driven development
Mink - Web Acceptance Testing
HTTP Mock - A library to simulate HTTP requests in unit tests
VFS Stream - A wrapper around virtual file system streams for testing
VFS - Another file system for testing virtuals
Locust - A modern load testing library written in Python
Peridot - a testing framework for event-driven development

Continuous Integration

Continuously integrated libraries and applications

Travis CI - a continuous integration platform
PHPCI - an open source continuous integration platform for PHP
Sismo - a continuously tested service library
Jenkins is a continuous integration platform supported by PHP
JoliCi - A Docker-powered continuous integration client written in PHP

Documentation

Library for generating project documentation

Sami - an API documentation generator
APIGen - Another API documentation generator
PHP Documentor 2 - an API documentation generator
phpDox - a documentation generator for PHP projects (not limited to API documentation)

Security

Library for generating secure random numbers, encrypting data, and scanning for vulnerabilities

HTML Purifier - A standards-compliant HTML filter
RandomLib - A library for generating random numbers and strings
True Random - A library for generating random numbers using www.random.org
SecurityMultiTool - a PHP security library
PHPSecLib - A pure PHP secure communication library
TCrypto - A simple key-value encryption repository
PHP IDS - A structured PHP security layer
PHP SSH - An experimental object-oriented SSH wrapper library
IniScan - A library for scanning PHP INI file security
SensioLabs Security Check - A web tool that provides security recommendations for checking Composer dependencies
Zed - An integrated web application penetration testing tool

Passwords

Libraries and tools for handling and storing passwords

Password Compat - A new compatibility library for PHP5.5 password functions
phpass - A portable password hashing framework
PHP Password Lib - A library for generating and verifying passwords
Password Policy - A password policy library for PHP and JavaScript
Password Validator - A library for verifying and upgrading password hashes
Zxcvbn PHP - A realistic PHP password strength estimation library based on Zxcvbn JS

Code Analysis

Libraries and tools for analyzing, parsing and processing code bases

PHP Parser - A PHP parser written in PHP
PHPPHP - a PHP virtual machine implemented by PHP
PHPSandbox - a PHP sandbox environment
Dissect - a collection of lexical and syntactic analysis tools
PHP Mess Detector - A library that scans for code defects, suboptimal code, unused parameters and more.
PHP Code Sniffer - A library that detects PHP, CSS and JS code standards conflicts
PHPCPD - A library to detect copied and pasted code
PHP Analyser - A library that analyzes PHP code to find defects and errors
PHP CS Fixer - A coding standards library
PHP Manipulator - A library for analyzing and modifying PHP source code
PHP Metrics - a static measurement library
PHP Refactoring Browser - A command line toolset for refactoring PHP code
UBench - A simple micro-benchmarking library
Athletic - An annotation-based benchmarking library
Mondrian - Code analysis tool using graph theory
Scrutinizer - A web tool for reviewing PHP code
PHPLOC - A tool to quickly measure the size of your PHP project
xHprof - Another PHP profiling tool
PHPCcheckstyle - A tool to help adhere to specific coding conventions

Debugging

Libraries and tools for debugging code

xDebug - A tool for debugging and analyzing PHP
PHP Debug Bar - a debugging toolbar
PHP Console - a web debugging console
Barbushin PHP Console - Another web debugging console for Google Chrome
PHPDBG - An interactive PHP debugger
Tracy - A simple error detection, logging and time measurement library
Z-Ray - A tool for debugging and configuring Zend servers

Build Tools

Project building and automation tools

Go - A simple PHP build tool
Bob - a simple project automation tool
Phake - a PHP clone library
Box - A tool for building PHAR files
Phing - A PHP project build system inspired by Apache Ant

Task Runners

Library for automatically running tasks

Task - A pure PHP task runner inspired by Grunt and Gulp
Robo - An object-oriented configured PHP task runner
Bldr - A PHP task runner built on Symfony components

Navigation

Tools for building navigation structures

KnpMenu - a menu library
Cartographer - a sitemap generation library

Asset Management

Tools to manage, compress and minimize web site resources

Assetic - an asset management pipeline library
Pipe - Another pipe library for resource management
Munee - a resource optimization library
JShrink - A JavaScript minimization library
Puli - a library for detecting absolute paths to resources

Geolocation

Libraries for geocoding addresses and using latitude and longitude

GeoCoder - a geocoding library
GeoTools - a library related to geographical tools
PHPGeo - a simple geography library
GeoJSON - An implementation of GeoJSON

Date and Time

Library for handling dates and times

Carbon - A simple date and time API extension
ExpressiveDate - Another date and time API extension
CalendR - a calendar management library

Event Event

Time-driven or libraries that implement non-blocking event loops

React - An event-driven non-blocking I/O library.
Rx.PHP - a reactive extension library
Ratchet - a web socket library
Hoa WebSocket - Another web socket library
Hoa EventSource - an event source library
Evenement - an event distribution library
Event - a library focusing on domain name events
Broadway - An event source and CQRS library.

Log Logging

Library for generating and processing log files

Monolog - a comprehensive logging tool
KLogger - an easy-to-use PSR-3 compatible logging class

E-commerce E-commerce

Libraries and applications for processing payments and building online e-commerce stores

OmniPay - A framework hybrid library for multi-gateway payment processing
Payum - a payment abstraction library
Sylius - an open source e-commerce solution
Thelia - Another open source e-commerce solution
Money - A PHP implementation of Fowler’s money model
Sebastian Money - Another library for handling monetary values
Swap - an exchange rate library

PDF

Libraries and software for processing PDF files

Snappy - a PDF and image generator library
WKHTMLToPDF - A tool to convert HTML to PDF

Office

Libraries for working with office suite documents.

PHPWord - a library for processing Word documents
PHPExcel - A library for processing Excel documents
PHPPowerPoint - a library for processing PPT documents
ExcelAnt - a library for manipulating Excel documents

Database Database

Libraries for database interaction using object-relational mapping (ORM) or data mapping techniques

Doctrine - a comprehensive DBAL and ORM
Doctrine Extensions - A collection of Doctrine behavioral extensions
Propel - A fast ORM, migration library and query builder
Eloquent - ORM for Laravel 4.
Baum - an Eloquent nested set implementation
Spot2 - An ORM mapper for MySQL
RedBean - A lightweight, low-configuration ORM
Pomm - A PostgreSQL object model manager
ProxyManager - A toolset for generating proxy objects for data mapping

Migrations

Library to help manage database schemas and migrations

PHPMig - Another migration management library
Phinx - Another database migration management library
Migrations - a migration management library
Doctrine Migrations - a Doctrine migration library

NoSQL

Libraries for handling NoSQL backends

MongoQB - A MongoDB query building library
Monga - a MongoDB abstraction library
Predis - a fully functional Redis library

Queue

Library for handling events and task queues

Pheanstalk - A Beanstalkd client library
PHP AMQP - A pure PHP AMQP library
Thumper - a RabbitMQ pattern library
Bernard - a multi-backend abstraction library

Search Search

Libraries and software that index and perform queries on data

ElasticSearch PHP - ElasticSearch’s official client library
Elastica - Client library for ElasticSearch
Solarium - Client library for Solr
SphinxQL query builder - Query library for Sphinx search engine

Command Line

Libraries for building command line tools

Boris - A Micro PHP REPL
PsySH - Another PHP REPL
Pecan - an event-driven and non-blocking shell
GetOpt - A command line selection parser
OptParse - Another command line selection parser
Commando - Another simple command line selection parser
GetOptionKit - Another command line options parser
Cron Expression - A library to calculate cron run date
ShellWrap - - A simple command line wrapper library
Hoa Console - Another command line library
Shunt - A library for running command lines in parallel on multiple remote machines
Cilex - A micro-framework for building command line tools
CLImate - A library for specially formatted output with color

Authentication and Authorization

Library that implements authentication and authorization

Sentry - A hybrid authentication and authorization framework library
Sentry Social - A social network authentication library
Opauth - a multi-channel authentication framework
OAuth2 Server - An OAuth2 authentication service, resource server and client library
OAuth2 Server - Another OAuth2 server implementation
PHP oAuthLib - Another OAuth library
TwitterOAuth - A Twitter OAuth library
TwitterSDK - A fully tested Twitter SDK
Haw - A Hawk HTTP authentication library
HybridAuth - an open source social login library
Lock - A library that implements an access control list (ACL) system
OAuth 1.0 Client - An OAuth 1.0 client library
OAuth 2.0 Client - An OAuth 2.0 client library

Markup

Library for handling tags

Decoda - a lightweight tag parsing library
PHP Markdown - a Markdown parser
CommonMark PHP - a Markdown parser that fully supports CommonMark spec
Dflydev Markdown - Another Markdown parser
Parsedown - Another Markdown parser
Ciconia - Another Markdown parser that supports Github Markdown style
Cebe Markdown - A fast and extensible Markdown parser
HTML5 PHP - An HTML5 parsing and serialization library

Strings

Library for parsing and processing strings

ANSI to HTML5 - A library that converts ANSI to HTML5
Patchwork UTF-8 - A portable library for handling UTF-8 strings
Hoa String - Another UTF-8 string library
Stringy - A string processing library with multi-byte support
Color Jizz - Library for processing and converting colors
UUID - Library for generating UUIDs
Slugify - A library that converts strings to slugs
Urlify - A PHP version of URLify.js in Django
Text - a text processing library
SQL Formatter - a library for formatting SQL statements
UA Parser - A library for parsing user agent strings

Numbers

Library for processing numbers

Numbers PHP - A library for processing numbers
Math - A library for working with huge numbers
ByteUnits - A library for parsing, formatting and converting byte units in binary and metric systems
PHP Units of Measure - A measurement unit conversion library
PHP Conversion - Another library for unit of measurement conversion
LibPhoneNumber for PHP - A PHP implementation library for Google phone number processing

Filtering and Validation

Library for filtering and validating data

Filterus - a simple PHP filtering library
Respect Validate - a simple validation library
Valitron - Another validation library
Upload - A library that handles file uploading and validation
DMS Filter - a comment filtering library
MetaYaml - A schema validation library that supports YAML, JSON and XML
ISO-codes - A library for validating various ISO and ZIP encodings (IBAN, SWIFT/BIC, BBAN, VAT, SSN, UKNIN)

REST and API REST and API

Libraries and web tools for developing REST-ful APIs

Apigility - An API builder built with Zend Framework 2
Hateoas - a HOATEOAS REST web service library
HAL - A Hypertext Application Language (HAL) building library
Negotiation - a content negotiation library
Drest - A library that exposes Doctrine entities as REST resource nodes
Restler - A lightweight framework that exposes PHP methods as RESTful web API

Caching

Library for caching data

Alternative PHP Cache (APC) - Turns on PHP opcode caching
Cache - a caching library (part of Doctrine)
Stash - Another caching library

Data Structure and Storage

Libraries that implement data structures and storage techniques

Ardent - a data structure library
PHP Collections - a simple collection library
Serializer - A library to serialize and deserialize data
PHP Object Storage - an object storage library
Fractal - A library for converting complex data structures into JSON output
Totem - - A library for managing and creating data exchange sets
PINQ - A Linq library implemented in PHP
JsonMapper - A library that maps embedded JSON structures to PHP classes

Notifications

Library for handling notification software

Nod - a notification library (Growl, etc.)
Notificato - A library for handling push notifications
Notification Pusher - A standalone library for device push notifications
Notificator - a lightweight notification library

Deployment

Project deployment library

Pomander - a PHP application deployment tool
Rocketeer - A fast and simple deployer in the PHP world
Envoy - A tool to run SSH tasks with PHP
Plum - a deployment library
Deployer - a deployment tool

Internationalization and Localization

Internationalization (I18n) and localization (L10n) libraries

Aura Intl

Third Party APIs

Libraries for accessing third-party APIs

Amazon Web Service SDK - PHP AWS SDK official library
S3 Stream Wrapper - Amazon S3 stream wrapping library
Stripe - Stripe official PHP library
Campaign Monitor - Campaign Monitor official PHP library
Digital Ocean - Digital Ocean API interface library
Github - a Github API interactive library
PHP Github API - Another Github API interaction library
Twitter OAuth - A Twitter OAuth workflow interaction library
Twitter REST - A Twitter REST API interaction library
Dropbox SDK - Dropbox SDK official PHP library
Twilio - Twilio Official PHP REST API
Mailgun - Mailgun Official PHP REST API

Extensions

Libraries to help build PHP extensions

Zephir - A compiled language between PHP and C for developing PHP extensions
PHP CPP - A C library for developing PHP extensions

Miscellaneous

Useful libraries and tools not in the categories above

Spork - a library that handles forking
JSON Lint - a JSON lint tool
JSONPCallbackValidator - Library to validate JSONP callbacks
Pagerfanta - a paging library
Ruler - a simple stateless production environment rule engine
LiteCQRS - A CQRS (Command Query Responsibility Separation) library
Sslurp - A library that reduces SSL processing
PHP Option - an optional type library
Metrics - A simple metrics API library
Sabre VObject - A library for parsing VCard and iCalendar objects
Annotations - an annotation library (part of Doctrine)
Whoops - a good error handling library
Finite - A simple PHP finite state machine
LadyBug - a dumper library
Procrastinator - A library for running time-consuming tasks
Compose - a function combination library
SuperClosure - A library that allows closure serialization
Jumper - a remote service execution library
Underscore - A PHP implementation of the Underscore JS library
PHP PassBook - An iOS PassBook PHP library
PHP Expression - a PHP expression language
RMT - A library for writing versions and publishing software
Wise - a configuration manager
Opengraph - an open graph
Essence - a library for extracting web media
Embera - an Oembed consumption library
Graphviz - a graphics library
Monad PHP - a simple Monad library
Flux - a regular expression building library
Patchwork - a function library that redefines users
Galapagos - Language Switch Evolution
Design Patterns PHP - A design pattern repository implemented in PHP
PHPCR - A PHP implementation of the Java Content Repository (JCR)
Functional PHP - a functional programming library
ClassPreloader - a library that optimizes automatic loading
Lib Country - A library of country and region data
Lib Accessor - A library that simplifies access
PHPStack - A TCP/IP stack concept written in PHP
Nmap - An Nmap PHP wrapper
Code Mover - A library for moving code
Iter - A library that provides iteration primitives using generators
Lambda PHP - A Lambda calculation parser in PHP
Country List - List of all countries with name and ISO 3166-1 encoding
PHP-GPIO - A library for GPIO pins of Raspberry PI
print_o - a visualizer for object graphs
Alias - a category name library

Software Software

Create software for a development environment

PHP Installation PHP Installation

Tools to help install and manage PHP on your computer

HomeBrew - An OSX package manager
HomeBrew PHP - A PHP channel for HomeBrew
PHP OSX - A PHP installer for OSX
PHP Brew - A PHP version manager and installer
PHP Env - Another PHP version manager
PHP Switch - Another PHP version manager
PHP Build - Another PHP version installer
VirtPHP - A tool to create and manage independent PHP environments

Development Environment

Software and tools for creating sandbox development environments

Vagrant - a portable development environment tool
Ansible - a very simple orchestration framework
Puppet - a server automation framework and application
PuPHPet - a web tool for building a virtual machine for PHP development
Protobox - Another web tool for building a virtual machine for PHP development
Phansible - a web tool that uses Ansible to build a PHP development virtual machine

Virtual Machines

Related PHP virtual machine

HipHop PHP - PHP virtual machine, runtime and JIT produced by Facebook
HippyVM - Another PHP virtual machine
Hack - A HHVM programming language for seamless manipulation of PHP

Integrated Development Environment (IDE) Integrated Development Environment

Integrated development environment supporting PHP

Netbeans - an IDE that supports PHP and HTML5
Eclipse for PHP Developers - A PHP IDE based on the Eclipse platform
PhpStorm - A commercial PHP IDE

Web Applications

Web-based applications and tools

3V4L - An online PHP shell
DBV - a database version control application
PHP Queue - An application for managing backend queues
Composer as a Service - Tool to download the Composer package as a zip file
MailCatcher - a web tool to capture and view emails

Resources Resources

Various resources to improve your PHP development skills and knowledge, such as books, websites, articles

PHP Websites PHP Websites

Useful websites related to PHP

PHP The Right Way - A quick guide to PHP best practices
PHP Best Practices - A PHP best practice guide
PHP Weekly - A PHP news weekly
Securing PHP - A briefing on PHP security and library recommendations
PHP Security - A PHP Security Guide
PHP FIG - PHP Framework Interaction Group
PHP UG - A website that helps users locate the nearest PHP User Group (UG)
Seven PHP - A website where members of the PHP community are interviewed
Nomad PHP - an online PHP learning resource
PHP Mentoring - Peer-to-peer PHP mentoring organization

Other Websites

Useful websites related to web development

The Open Web Application Security Project (OWASP) - an open software security community
WebSec IO - a web security community resource
Web Advent - A calendar for web developers
Semantic Versioning - A website that parses semantic versions
Atlassian Git Tutorials - A Git tutorial series
Hg Init - A Mercurial Tutorial Series
Servers for Hackers - A newsletter about server management

PHP Books PHP Books

Very good books related to PHP

Scaling PHP Applications - An e-book by Steve Corona on scaling PHP applications
The Grumpy Programmer's Guide to Building Testable PHP Applications - A book about building testable PHP applications by Chris Hartjes
Grumpy PHPUnit - A book about unit testing with PHPUnit by Chris Hartjes
Mastering Object-Orientated PHP - A book about object-oriented PHP by Brandon Savage
Signaling PHP - A book by Cal Evans on capturing PCNTL signals in CLI scripts
Securing PHP: Core Concepts - A book about common PHP security terms and practices by Chris Cornutt
Modernising Legacy Applications in PHP - A book about modernizing legacy PHP applications by Paul M.Jones
Modern PHP New Features and Good Practices - A book about new PHP features and best practices by Josh Lockhart

Other Books

Books related to general computing and web development

The Linux Command Line - A book about the Linux command line by William Shotts
Understanding Computation - a book about computing theory by Tom Stuart
The Tangled Web — Securing Web Applications - A book about web application security by Michal Zalewski
Elasticsearch: The Definitive Guide - A guide to working with Elasticsearch by Clinton Cormley and Zachary Tong
Eloquent JavaScript - A book about JavaScript programming by Marijin Haverbeke
Vagrant Cookbook A book about creating a Vagrant environment by Erika Heidi
Pro Git - A book about Git by Scott Chacon and Ben Straub

PHP Videos PHP Videos

Very good videos related to PHP

Taking PHP Seriously - Keith Adams from Facebook talks about the advantages of PHP
PHP Town Hall - A casual PHP podcast with Ben Edmunds and Phil Sturgeon
Programming with Anthony - Anthony Ferrara’s video series

PHP Reading PHP Reading

PHP related reading materials

Create Your Own PHP Framework - A series of articles by Fabien Potencier on how to create your own PHP framework
Seven Ways to Screw Up BCrypt - An article about correcting BCrypt implementation
Preventing CSRF Attacks - An article to prevent CSRF attacks
Don't Worry About BREACH - An article about BREACH attacks and CSRF tokens
On PHP 5.3, Lamda Functions and Closures - An article about lambda functions and closures
Use Env - an article about using unix environment help
Composer Primer - Basic use of Composer
Composer Versioning - an article about Composer versions
Composer Stability Flags - An article about Composer stability flags
Innocent Villagefolk or a Pillagin’ Pirate? - An article about PHP getting ideas from other languages
Predicting Random Numbers in PHP - an article about generating random numbers
A 20 Point List for Preventing XSS in PHP - An article about preventing XSS
PHP Sucks! But I Like It! - An article about the pros and cons of PHP
PHP Is Much Better Than You Think - An article about the PHP language and ecosystem

PHP Internals Reading

Read information related to PHP kernel or performance

PHP RFCs - PHP RFCs homepage (request comments)
PHP Internals Book - An online book about the PHP kernel written by three core developers
Print vs Echo, Which One is Faster? - An article about printing and echo performance
The PHP Ternary Operator. Fast or Not? - An article about the performance of ternary operations
Disproving the Single Quotes Myth - An article about the performance of single and double quoted strings
You're Being Lied To - An article about kernel ZVALs
How Long is a Piece of String - An article about the principle of strings
Understanding OpCodes - an article about opcodes
How Foreach Works - StackOverflow details about foreach answer
When Does Foreach Copy? - An article about the principle of foreach
How Big Are PHP Arrays (And Values) Really? - An article about array principles
Why Objects (Usually) Use Less Memory Than Arrays - An article about the principles of objects and arrays
PHP Evaluation Order - An article about PHP evaluation order
PHP source code for developers: 1 2 3 4 - Series about PHP source code
Garbage Collection: 1 2 3 - Series on PHP Garbage Collection Principles