PHP filesize over 4Gb - php

Question

I'm running a Synology NAS Server,
and I'm trying to use PHP to get the filesize of files.
I'm trying to find a function that will successfully calculate the filesize of files over 4Gb.
filesize($file); only works for files <2Gb
sprintf("%u", filesize($file)); only works for files <4Gb
I also tried another function that I found on the php manual, but it doesn't work properly.
It randomly works for certain file sizes but not for others.
function fsize($file) {
// filesize will only return the lower 32 bits of
// the file's size! Make it unsigned.
$fmod = filesize($file);
if ($fmod < 0) $fmod += 2.0 * (PHP_INT_MAX + 1);
// find the upper 32 bits
$i = 0;
$myfile = fopen($file, "r");
// feof has undefined behaviour for big files.
// after we hit the eof with fseek,
// fread may not be able to detect the eof,
// but it also can't read bytes, so use it as an
// indicator.
while (strlen(fread($myfile, 1)) === 1) {
fseek($myfile, PHP_INT_MAX, SEEK_CUR);
$i++;
}
fclose($myfile);
// $i is a multiplier for PHP_INT_MAX byte blocks.
// return to the last multiple of 4, as filesize has modulo of 4 GB (lower 32 bits)
if ($i % 2 == 1) $i--;
// add the lower 32 bit to our PHP_INT_MAX multiplier
return ((float)($i) * (PHP_INT_MAX + 1)) + $fmod;
}
Any ideas?

Answer 1

You are overflowing PHP's 32-bit integer. On *nix, this will give you the filesize as a string:
<?php $size = trim(shell_exec('stat -c %s '.escapeshellarg($filename))); ?>

Answer 2

How about executing a shell command like:
<?php
echo shell_exec("du 'PATH_TO_FILE'");
?>
where PATH_TO_FILE is obviously the path to the file relative to the php script
you will most probably do some regex to get the filesize as a standalone as it returns a string like:
11777928 name_of_file.extention

Answer 3

Here is one complete solution what you can try: https://stackoverflow.com/a/48363570/2592415
include_once 'class.os.php';
include_once 'function.filesize.32bit.php';
// Must be real path to file
$file = "/home/username/some-folder/yourfile.zip";
echo get_filesize($file);

Answer 4

This function can run on the 32-bit Linux
function my_file_size($file){
if ( PHP_INT_MAX > 2147483647){ //64bit
return filesize($file);
}
$ps_cmd = "/bin/ls -l $file";
exec($ps_cmd, $arr_output, $rtn);
///bin/ls -l /data/07f2088a371424c0bdcdca918a3008a9cbd74a25.ic2
//-rw-r--r-- 1 resin resin 269484032 9月 9 21:36 /data/07f2088a371424c0bdcdca918a3008a9cbd74a25.ic2
if($rtn !=0) return floatval(0);
preg_match("/^[^\s]+\s+\d+\s+[^\s]+\s+[^\s]+\s+(\d+)\s+/", $arr_output[0], $matches);
if(!empty($matches)){
return floatval($matches[1]);
}
return floatval(0);
}