1. The presenter will discuss the history and modern state of PHP, using Symfony as an example. PHP originated in 1995 but had poor code quality until frameworks like Symfony emerged. 2. PHP 5.3 in 2009 introduced important features like namespaces and anonymous functions that allowed new frameworks like Symfony 2 to implement best practices. Symfony focuses on concepts like dependency injection, decoupling, and clean code. 3. PHP and Symfony have matured significantly. PHP 7 and Symfony's influence have made PHP a viable choice for web development, despite its reputation in earlier eras of "spaghetti code". The presenter argues it is worth

1. Why I stopped
worrying and
LOVED PHP
Chris Ozog - Codesushi CTO

2. Agenda:
1. 2 words about me
2. Why does PHP have a bad reputation, so a bit of history
3. PHP 5.3 and the birth of Symfony
4. Modern PHP on the example of Symfony
5. Why is it worth to invest time in PHP

3. 2 words about meIn the context of the history of PHP
● First PHP app in 2004
● I did not want to become a PHP guy
● Things turned out differently…
● In the meantime, PHP has changed a lot
● Apart from the above: Codesushi CTO

4. Why does PHP have a bad reputation, so a bit of history:
The wild west (1995 ~ 2006)
● The first version of PHP - 1995
● The spaghetti code era
○ No design patterns were used
○ No separation of PHP code from HTML
○ More emphasis on something working than on the quality of the code
● Spaghetti is no longer tasty - Ruby on Rails comes to life (2004)
○ Everyone wants to be RoR - CakePHP and Django (python) appear
● Symfony 1 comes into play. November 2005

5. Why does PHP have a bad reputation, so a bit of history:
Brave new world (2006 ~ 2011)
● The first version of Symfony 1. 22.10.2005
● The framework war
○ CakePHP, CodeIgniter, Symfony, ZendFramework
● A problem! No possibility to share the code between
frameworks
● PHP 5 – starts to exhaust its capabilities
○ Long class names to simulate namespaces
● 2009 - PHP 5.3 and PSR standards come to life
● The release of Symfony 2, July 2011

6. PHP 5.3 – a breakthrough PHP version
● 2009 – 1st
version of PHP 5.3
● Introduced namespaces
● Improved efficiency
● Anonymous functions
● Closures
● Improved object-orientation
● Allowed to create new frameworks such as
Symfony 2

7. The birth of Symfony
● July 2011 – first version
● Implementation of PSR-0,1,2 standards
● Leaving the RAD concept – a shift in terms of
approach
● The Twig template system
● The Bunldes concept
● The Components concept
● Focusing on the Dependency Injection model and
Decoupling
● Starting with the 2.1 version – switching to the
composer in order to manage dependencies
● Symfony distributions - (RAD, CMF, REST)

8. Modern PHP on the example of Symfony
● Decoupling
● Dependency Injection
● Clean code
● SOLID Code

9. Why is it worth to invest time in PHP
● PHP 7
● It’s still the king of the web
● Symfony’s impact on the entire
ecosystem
● It’s a decent language

10. Thank you for
your attention :)
e-mail: hello@codesushi.co
www: codesushi.coChris Ozog
Codesushi CTO