framework/caching/migrations/m150909_153426_cache_init.php
The class m150909_153426_cache_init is not named in CamelCase. Open
Open
class m150909_153426_cache_init extends Migration
{
/**
* @throws yii\base\InvalidConfigException
* @return DbCache- Read upRead up
- Exclude checks
CamelCaseClassName
Since: 0.2
It is considered best practice to use the CamelCase notation to name classes.
Example
class class_name {
}