23. 文件多
http://www.symfonyproject.org/doc/1_4/
A Gentle Introduction to symfony
Practical symfony
The symfony Reference Book
More with symfony
24. 活躍的社群
Mailinglist / forum / IRC
More than 1300 plugins , 500 developers.
300K unique visitors per month
on the official web site
http://www.symfonyproject.org/