php-symfony-expression-language 2.8.7+dfsg-1.2ubuntu2 (amd64 binary) in ubuntu artful

 The Symfony ExpressionLanguage Component provides an engine that can compile
 and evaluate expressions. An expression is a one-liner that returns a value
 (mostly, but not limited to, Booleans).
 .
 By default, the engine implements simple math and logic functions, method
 calls, property accesses, and array accesses.
 .
 Symfony is a PHP framework, a set of tools and a development methodology.