Instalação
Windows:  https://php.com.br/instalacao-php-windows
Linux:  https://php.com.br/instalacao-php-linux
Mac OS:  https://php.com.br/instalacao-php-macos

Links úteis
Site oficial PHP: https://www.php.net/
Composer: https://getcomposer.org/
Packagist: https://packagist.org/

Livros recomendados
PHPOO: https://www.adianti.com.br/phpoo
Design Patterns Gamma: https://en.wikipedia.org/wiki/Design_Patterns
Design Patterns Fowler: https://martinfowler.com/books/eaa.html
Softwares recomendados
Adianti Framework: http://adianti.com.br/framework
Adianti Builder: https://adiantibuilder.com.br

Gestão de conteúdo
Drupal: https://www.drupal.org/
Joomla: https://www.joomla.org/
Wordpress: https://wordpress.org/

Micro Frameworks
Lumen: https://lumen.laravel.com/
Slim: https://www.slimframework.com/
Expressive: https://getexpressive.org/

Templates
Twig: https://twig.symfony.com/
Smarty: https://www.smarty.net/
Mustache: https://github.com/bobthecow/mustache.php

Email
PHPMailer:  https://github.com/PHPMailer/PHPMailer
Swift: https://swiftmailer.symfony.com/

Imagens
Intervention: https://github.com/Intervention/image

Documentação
PHPDocumentor: https://github.com/phpDocumentor/phpDocumentor2
PHPDox: http://phpdox.de/

Integração contínua
GitLab-CI: https://about.gitlab.com/product/continuous-integration/
PHP-CI: https://github.com/dancryer/phpci
Phing: https://www.phing.info/

Deploy
Deployer: https://github.com/deployphp/deployer
Envoy: https://github.com/laravel/envoy
Rocketeer: https://github.com/rocketeers/rocketeer

Gestão de ambientes
Vagrant: https://www.vagrantup.com/
Docker: https://www.docker.com/