fopen

Hi I am writing to a file different sources. The one writes the date and the next starts writing data. The date writes fine. $header = "0$gpsdate"; echo $out_file; $fp = fopen($out_file, "a"); $write = (fwrite($fp, "$header\n")); fclose($fp); Now I get to another batch process that inserts data into the same file but it starts on the same line the first time round, then carrys on to the next line.. So I end with this 2003-09-25 data data data data anyone help out so I can get it to write like this 2003-09-25 data data data Thanks Chris