src/models/StorageImage.php
public function getFileExists()
    {
        return Yii::$app->storage->fileSystemExists($this->filter_id . '_' . $this->file->name_new_compound);
    }
public function getFileExists()
    {
        return Yii::$app->storage->fileSystemExists($this->filter_id . '_' . $this->file->name_new_compound);
    }
public function getFileExists ( ) { return Yii :: $ app -> storage -> fileSystemExists ( $ this -> filter_id . '_' . $ this -> file -> name_new_compound ) ; }
Return boolean value whether the file server source exsits on the server or not.

@return boolean Whether the file still exists in the storage folder or not.
@since 1.2.2.1
Return boolean value whether the file server source exsits on the server or not .