First, I am running (currently) php 4.0.6 under Redhat 7.2 with kernel
2.4.10
I know you can do the following:
<?
header("Content-type: application/force-download");
header("Content-disposition: attachment; filename=blah.txt");
readfile("blah.txt");
?>
to force the user to download a file.
However, this wouldn't work if blah.txt is larger than 2G on my machine
with php 4.0.6 for Redhat 7.2, because all the file I/O operations are
done in 32 bits functions.
So here are two solutions i though about:
1) instead of readfile("blah.txt"), do a passthru("cat blah.txt"). Since
the basic idea of forcing a download is to pipe the file content to the
standard output (which is the browser in this case), i don't understand
why passthru("cat blah.txt") wouldn't do the trick. In fact, I can only
download about 88Mbs of the whole 4G file I planned to download.
2) recompile the php package with -D_FILE_OFFSET_BITS=64 enabled. However,
with the ./configure; make; make install, i can't seem to figure out where
to stick the option in. (prefer doing it in one of the configure arguments
if possible)
Forgive me if I posted this to the wrong mailing list, I had been losing
hairs over these puzzled questions.
TIA.
--
Wei Weng
Network Software Engineer
KenCast Inc.
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