3. • symfony 1 started as a glue of existing open source
librairies:
–Prado, Propel, Mojavi
• Adopted concepts from other frameworks
–Routing, I18N, Forms
• Added some new concepts:
–Web debug toolbar, admin-generator
4. Symfony components, a set of standalone librairies
–Templating
–Dependency Injection
–YAML
–Routing
–Output Escaper
– and more…
5. symfony 1.4: released in November 2009
• Improved the usability
• Removed the deprecated features
• It’s the current LTS release, maintained until 2012