Class constants trigger "const" keyword sniff

[chrisbliss18]

Class constants are supported in PHP 5+. Using "const" outside of a class as an alternative to using "define" requires PHP 5.3+. However, all uses of "const" are treated as requiring PHP 5.3.

I had a look at the keyword sniff, and I'm not sure what the best way would be to detect the different uses of this keyword. Perhaps a new sniff would have to be created to handle the different uses.

The following is a class constant, which is compatible with PHP 5+.

<?php
class MyClass {
    const CONSTANT = 'constant value';
}

The following is a global constant defined using the "const" keyword, which is compatible with PHP 5.3+.

<?php
const CONSTANT = 'Hello World';

[jrfnl]

Sounds like a perfect example for using the PHP_CodeSniffer_Standards_AbstractScopeSniff class as a base and applying different tests to inside and outside (class) scope.