Description: ------------ The ArrayDeclarationSniff checks to proper declaration of arrays. There is a check which suppose detect arrays with just one element which are written as a multi-line array. The follow multi-line array: $c = array( 'a' => 1, ); could be written in a single line: $c = array('a' => 1,); The problem here is that the sniff takes the trailing comma as the proof for a single line array and mark even the obviously single line array as a violation until you remove the comma - then it passes the test.

Fixed in github repo: https://github.com/squizlabs/PHP_CodeSniffer/commit/cdbf8faa5b8a65e7f371d820ad2 759d51d20ad2f A new error message has been added for this case. There should not be a comma at the end of a single-line array. It is only required at the end of a multi-line array.