Ruby on Rails Vs PHP

Ruby on Rails is a relatively new and young programming language. But Php is little bit older than ruby on rails and many people have experience with it. According to my view both languages are easy to learn.
Before select a language for a project SW Engineers normally consider about language performance, security, Development speed,Maintainability,Scaling and Development tools
By comparing rails and php , ruby development speed and maintainability little bit higher than php. Reason for that is ruby on rails is less configuration and also it practice agile development, further more lot of plugins are available for ruby on rails development.According to my view security is same in both rails and php.Because both lanuages are support SSL implementation.And Ruby has less code than php.And also ruby codes are more human readable than the php code..

What is the Best????????