AbstractArrayDeclarationSniff::getActualArrayKey(): handle FQN true/false/null #668
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The special constants
true
/false
/null
can be used in fully qualified form, even though this is rarely done in practice.This commit adds support for handling this to the
AbstractArrayDeclarationSniff::getActualArrayKey()
method in a PHPCS 3/4 cross-version compatible manner.Includes tests.