PHP AND DJPEG

[Anon]

I am having trouble with djpeg, it does not seem to have permission to write to a dir i specify. How do i make sure it has such a permission. I think there might be a bug since it was working dec 31 and before and now it is not. Somehoe DJPEG is dying and not writing that file, anyone that can help it would be MUCH appreciated.

Has anyone encountered anything like this
The code i am using looks like this

//Get latest entry in order to
$idqueryresult = mysql_fetch_row (mysql_query ("SELECT LAST_INSERT_ID()", $mysql_link));

$currentid = $idqueryresult[0];
copy ("$gallery", "./photographs/gallery/$currentid.jpg");
//converting it to pnm
system ("djpeg ./photographs/gallery/$currentid.jpg >./photographs/gallery/$currentid.pnm");
//scaling the pnmfile
system("pnmscale -xy 120 120 ./photographs/gallery/$currentid.pnm | cjpeg -smoo 10 -qual 50 > ./photographs/thumbnail/$currentid.jpg");

system("rm ./photographs/gallery/$currentid.pnm -f");


if($printable != "none")
{
	copy ("$printable", "/photographs/printable/$idqueryresult[0].jpg");

}

?>

[cvincent]

Make a php script with just "print get_current_user();". If you are running under apache then it defaults to the user "nobody" and group "nobody". You must make sure that the user that get_current_user printed has write permission to the /photographs/gallery/ folder. The easy way to do it is "chmod 777 /photographs/gallery/" but be weary of world writable directories if you are at all concerned about security.

If it turns out to not be a problem with permissions, run the commands one by one to make sure that they execute ok on the command line.

-Chris

[Anon]

Thank you very much chris, i found out the problem was in not specifying absolute paths for the djpeg and other graphics utilites. The pnmscale was not in the normal path and that is what was screwing everything up.

I hope this helps someone in the future.