Hi Sara, undoubtedly, Podhering is Hungarian name for modern Pidhorjany which is just one of Mukachevo city districts right now. Back then it was small neighbor village which has been absorbed by the city eventually.
Currently Mukachevo and Pidhorjany are located in Transcarpathia, Ukraine however previously entire area belonged to different countries. Please read my article about this, it explains the change of formations in short:
Historical periods of Transcarpathia in genealogical context
As a researcher, I can help you to check available sources. However, your inquiry is too vague right now and I would like to get more details in order to give more definite answer.
Please check your mail, I've sent my specifying questions.