Description: ------------ The problem has olready spotted here (http://pear.php.net/bugs/bug.php?id=19490) and I find a solution to solve it. It's realy simple, you just have ton changes 2 lines in CodeSniffer/Standards/Zend/Sniffs/NamingConventions/ValidVariableNameSniff.php Line 122 and 229 when use the function "hasCondition", add the T_TRAIT in the array passed. Test script: --------------- l.122 $inClass = $phpcsFile->hasCondition($stackPtr, array(T_CLASS, T_INTERFACE, T_TRAIT)); l.229 if ($phpcsFile->hasCondition($stackPtr, array(T_CLASS, T_INTERFACE, T_TRAIT)) === true) { Actual result: -------------- With that, CodeSniffer will use the class naming standards in the trait, so the error : "ERROR | Variable "_myVariable" is not in valid camel caps format" will not appear anymore. If you can implement that directly in CodeSniffer, that will help some guys.

Thanks, I've committed those changes here: https://github.com/squizlabs/PHP_CodeSniffer/commit/b574c8465331ac48e7c96fa175 ef3ac40b92855b