Explain naming convention in Yii 2 Framework ?

Yii follows below naming conventions

• You can define table prefix when using Gii. In your case, you need to set it to tbl_. Then it should generate UserController instead of TblUserController.
• The Yii Framework employs a class naming convention whereby the names of the classes directly map to the directories in which they are stored. The root level directory of the Yii Framework is the “framework/” directory, under which all classes are stored hierarchically.
• Class names may only contain alphanumeric characters. Numbers are permitted in class names but are discouraged. Dot (.) is only permitted in place of the path separator.