How to set up encoding when saving Cyrillic filenames in Yii2?

Question

Yii

ActiveForm is used to upload files to the portal

<?= $form->field($modelUploadForm, 'file[]')->fileInput(['multiple'=>true])?>

When saving files to disk, Cyrillic file names are saved in a different encoding, approximately of the following form - РђРљРў_СЕНТЯР'Р Р¬_2014.doc, while the file name is stored correctly in the database.
In which direction to dig?

Answer 1

In the controller, you need to change the file name from cp1251 encoding to utf-8