The Manual.
PHP Internals Book
A collaborative effort to better document and describe how PHP works internally.
Tracker of PHP RFCs
This website aims to unify different sources of information about the PHP internals under one roof.
Watch PHP RFC votes
This website watches all votes on RFCs and builds a timeline of who voted +1/-1 when.
PHP TestFest
PHP TestFest aims to improve the code coverage of the test suite for PHP.
PHP Events
List of upcoming PHP and Web Development events.
Open source project, built and run by volunteers, to bring attendee feedback to speakers at events, quickly and transparently.
A list of currently open Calls for Papers (CFP).
An international meeting-point for the PHP-Community.
PHP Earth
The website of the Global PHP Group.
Friends of PHP
The Friends of PHP page shows all PHP meetups for the next 30 days.
Nomad PHP
Nomad PHP provides affordable, continuing education for the PHP community.
PHP Women
An inclusive & global network providing support within the PHP community.
PHP Mentoring
Focus on creating networks of skilled developers from all walks of life.
Open Source Mental Illness
Changing how we talk about mental health in the tech community.
A Field Guide to Elephpants
Detailing the attributes, habitats, and variations of the Elephpas hypertextus.
Adopt your elePHPant
Adopt your elePHPant, the only original PHP elephant plush.
PHP The Right Way
Quick reference for PHP popular coding standards.
PHP The Wrong Way
A pragmatic view on PHP programming.
PHP does not suck
PHP is the Nickelback of programming languages.
PHP Sadness
These are things in PHP which make me sad.
Static Analysis Tools
A curated list of static analysis tools for PHP.