fwrite appends data to file but wont do a new line...?

I'm trying to add data to a txt file. I use: $thefile = fopen("URL", "r+"); fwrite ($thefile, $inputed_data); it puts the new data at the top of the file like it should only problem is that it doesn't allow me to put it on a new line or insert a <return> so instead of: new line of text old line of text i get: new line of textold ling of text anyone know what to do? thanks. (student of computer science)