PHP: Why is this forced mime download adding 2 extra empty lines? -

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i have php script wrote create .txt tab delimited file. need have forced downloaded web browser. this, when compare file source forced downloaded on contain 2 blank lines. here code:

// force download of tab del .txt file web browser:      header('content-type: application/download');     header("content-disposition: attachment; filename=$tab_del_file");     header("content-length: " . filesize($tab_del_file));      $fp = fopen($tab_del_file, "r");     fpassthru($fp);     fclose($fp);

linux shell command compare 2 files , show there blank lines: $ diff example.txt /tmp/example.txt 25a26,27

i sftp'ed downloaded example.txt /tmp directory diff on server. why 2 blank lines being added downloaded version , fix? thanks!

as php code looks ok , not produce new lines, can have 1 reason. have closing ?> tag , new lines @ end of file:

?> <--- empty line <--- empty line

note content outside php tags not parsed php , forwarded browser.

solution: remove closing ?> tag or new lines. prefer not using ?>

btw, should mention this:

$fp = fopen($tab_del_file, "r"); fpassthru($fp); fclose($fp);

can simplified by

readfile($tab_del_file);

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