[PHP] fopen

[Chris Grigor]

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