fwrite() blank-line Quirk?

Hi All, Relatively new PHP coder (was in an MS / ASP shop before)... I'm doing some flat-file manipulation (please, spare me the database comments, I'm working on it!), and I'm having to read strings out of one file and copy them into another until a while() condition is satisfied. The problem is, I seem to always end up with a blank line at the end of my files (which then screws up later file-processing) - I'm assuming because of the \n that fwrite() appends to the end of each string... Is there a simple way to get rid of this blank line or somehow get fwrite() to NOT put a newline on the end of a string? Thanks in Advance, --Noel Wade