I have bad news for you. MS-Word files are not flat files ans simply appending a picture at the end will never work.
file_put_contents($FullPath_with_File, $data['Emp_Photo'], FILE_APPEND);
It is a little more complicated.
First thing to do is launch ms-word, open a document and see how to insert a picture inside. You will see that word wants to know where is the picture in document, its size and a few other settings.
If you are on server, you have to find a library that allow to directly manipulate a doc.
If you are on client side, you can also use a library that launch word and send commands.
I don't use such library myself, but I think one is named INTEROP.
Google "php ms-word"