The white space is causing this kind of problem. Try to print this array on the browser, you’ll see some extra space. This is the culprit.

This extra space is coming from any of your include file. When you start writing the code, do not leave any space on top of the code.

I was having the same problem & got this fixed by just removing extra space from one of my included file.

Manish

Here’s my code below.

header(“Cache-Control: must-revalidate, post-check=0, pre-check=0″);
header(‘Content-Description: File Transfer’);
header(“Content-type: text/csv”);
$fileName = ‘somefile.csv’;
header(“Content-Disposition: attachment; filename={$fileName}”);
header(“Expires: 0″);
header(“Content-Transfer-Encoding: binary”);
header(“Pragma: public”);

$dataString = “Start of the stringrnrn”;
$dataString .= “Concatenate rest of the string”;

$fh = @fopen( ‘php://output’, ‘w’ );
fwrite($fh, $dataString);

fclose($fh);

exit;

However I’m facing a small issue. I’m getting an extra blank line when I open the .csv file in excel. Any idea what this could be and how to remove it?

I also modified the script to create a .txt file. But here too an extra character is coming.