As I set up an online file management system, I encountered a roadblock.
My attempt to send the file to the client using this customized readfile function seems to be causing issues:
function readfile_chunked($filename,$retbytes=true) {
$chunksize = 1*(1024*1024); // chunk size in bytes
$buffer = '';
$cnt =0;
$handle = fopen($filename, 'rb');
if ($handle === false) {
return false;
}
while (!feof($handle)) {
$buffer = fread($handle, $chunksize);
echo $buffer;
ob_flush();
flush();
if ($retbytes) {
$cnt += strlen($buffer);
}
}
$status = fclose($handle);
if ($retbytes && $status) {
return $cnt;
}
return $status;
}
Unfortunately, when attempting to download a 13 MB file, it stops at 4 MB. Any ideas on what could be causing this issue? Speed and time limits are not problem as I'm working on a local network with sufficient resources.
I have confirmed that PHP's memory limit is set to 300 MB.
Appreciate any assistance you can provide.