Hi
I've developed a download handler, it works perfectly in all cases but
one: When the file is bigger than the memory_limit from php, the
apache webserver falls down.
This is the code:
************************************************
$file = '/some_path1/some_path2/file.ext';
# Content-Type
switch(gen_ext(basename($file))) {
case 'exe': $ctype='application/octet-stream'; break;
case 'zip': $ctype='application/zip'; break;
case 'doc': $ctype='application/msword'; break;
case 'pdf': $ctype='application/pdf'; break;
case 'ppt': $ctype='application/vnd.ms-powerpoint'; break;
case 'xls': $ctype='application/vnd.ms-excel'; break;
case 'gif': $ctype='image/gif'; break;
case 'jpe': case 'jpeg': case 'jpg': $ctype='image/jpg'; break;
case 'png': $ctype='image/png'; break;
case 'mp3': $ctype='audio/x-mpeg, audio/x-mpeg-3, audio/mpeg3'; break;
case 'wma': $ctype='audio/x-ms-wma'; break;
case 'wmv': $ctype='video/x-ms-wmv'; break;
default: $ctype='application/force-download';
}
header('Pragma: public');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Cache-Control: private',false);
header('Content-Type: '.$ctype);
header('Content-Disposition: attachment; filename='.basename($file).'');
header('Content-Transfer-Encoding: Binary');
header('Content-Length: '.filesize($file));
# Defines memory limit. If there's no access to funcion, we use
default value (2 MB)
$mem = (function_exists('memory_get_usage')) ? memory_get_usage() :
(2*(1024*1024));
if(filesize($file)<=$mem) {
# If filesize is less than memory limit, the file gets directly downloaded
readfile($file);
} else {
# If filesize is bigger than memory limit, the file gets
downloaded in chunks
if(($f = fopen($file,'rb')) === false) die();
while (!feof($f)) {
echo fread($f,(1*(1024*1024)));
flush();
@ob_flush();
}
fclose($f);
}
Any help will be appreciated!
Andres
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