Both the $myVar assignment in line 1 and the $higher assignment in line 2
are dead. The first because $myVar is never used and the second because
$higher is always overwritten for every possible time line.
The method yii\BaseYii::trace() has been deprecated with message: since 2.0.14. Use [[debug()]] instead.
This method has been deprecated. The supplier of the class has supplied an explanatory message.
The explanatory message should give you some clue as to whether and when the method will be
removed from the class and what other method or class to use instead.
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.