Description: ------------ The phpcs with --standard=PSR2 reports "TRUE, FALSE and NULL must be lowercase; expected "null" but found" for classes that contains Null in their names, for example the following lines will be reported as invalid: use Zend\Log\Writer\Null as NullWriter; // or new \Zend\Log\Writer\Null() Test script: --------------- use Zend\Log\Writer\Null as NullWriter; // or new \Zend\Log\Writer\Null() Expected result: ---------------- No errors should be displayed. Actual result: -------------- FILE: D:\system\home\project\myak2\src\test\Myak\Log\ConsoleLoggerTest.php -------------------------------------------------------------------------------- FOUND 1 ERROR(S) AFFECTING 1 LINE(S) -------------------------------------------------------------------------------- 6 | ERROR | TRUE, FALSE and NULL must be lowercase; expected "null" but found | | "Null" --------------------------------------------------------------------------------

This was actually a bug in the generic upper and lowercase constant sniffs. Fixed in the github repo: https://github.com/squizlabs/PHP_CodeSniffer/commit/d2b335091060995c6bcba2330 1f2f63e9f666ee3