Slides from International PHP Conference 2014
Have fun :)
https://speakerdeck.com/dzuelke/the-twelve-factor-app-and-php-on-heroku
https://speakerdeck.com/jaytaph/the-first-few-milliseconds-of-https-loadays
The talk Code Coverage: Covered in Depth by Sebastian Bergmann can be found directly on the thePHP.cc website.
This article was written quite a while ago (7 years), please keep this in mind when using the information written here. Links, code and commands might be outdated or broken.
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