Topics

Setup

PHP requirements: 5.3, ext/intl
https://github.com/symfony/symfony-sandbox vs. https://github.com/symfony/symfony-bootstrapper vs. ..
submodules vs. vendor scripts vs. MR
- submodule cons: not everything is in git (svn, mercurial etc)
- vendor script cons: risk of things getting out of sync
- MR cons: not cross platform

http://fabien.potencier.org/article/11/what-is-dependency-injection
container injection
- pros: quick to setup, full lazy loading (request, response)
- cons: dependencies not easily visible, dependencies cannot be customized on a per service basis, unit testing ugly
constructor injection
- pros: clear dependencies both in the code and DI config
- cons: no way to handle optional dependencies, boilerplate code
setter injection
- pros: allow's to handle optional dependencies to some degree
- cons: more boilerplate code, dependency definition cluttered
interface injection
- pros: less chance for typos
- cons: more boilerplate code, dependencies cannot be customized on a per service basis

config recommendations
- config import
- yaml vs. xml
- yaml merge key http://yaml.org/type/merge.html
- xsd
controllers as service
base Controller vs. POPO
request vs. sub-requests (parameter propagation)
single vs. multiple separate front controllers
- separation frontend vs. admin not necessary anymore
- however for large apps it pays to separate code during development
  - step by step updates possible
  - multiple teams working
- main/MainKernel.php vs. app/main/MainKernel.php

structuring controllers for ESI
- forward() is no longer your performance enemy
- break up controller actions based on cache settings
varnish