Beware of empty files!
<?php
// Wrong
$exp = floor(log($bytes) / log(1024));
//Correct
$exp = $bytes ? floor(log($bytes) / log(1024)) : 0;
?>
(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
disk_total_space — Returns the total size of a filesystem or disk partition
Given a string containing a directory, this function will return the total number of bytes on the corresponding filesystem or disk partition.
directoryA directory of the filesystem or disk partition.
Returns the total number of bytes as a float
or false on failure.
Example #1 disk_total_space() example
<?php
// $ds contains the total number of bytes available on "/"
$ds = disk_total_space("/");
// On Windows:
$ds = disk_total_space("C:");
$ds = disk_total_space("D:");
?>Note: This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.
Beware of empty files!
<?php
// Wrong
$exp = floor(log($bytes) / log(1024));
//Correct
$exp = $bytes ? floor(log($bytes) / log(1024)) : 0;
?>For a non-looping way to add symbols to a number of bytes:
<?php
function getSymbolByQuantity($bytes) {
$symbols = array('B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB', 'ZiB', 'YiB');
$exp = floor(log($bytes)/log(1024));
return sprintf('%.2f '.$symbol[$exp], ($bytes/pow(1024, floor($exp))));
}To find the total size of a file/directory you have to differ two situations:
(on Linux/Unix based systems only!?)
you are interested:
1) in the total size of the files in the dir/subdirs
2) what place on the disk your dir/subdirs/files uses
- 1) and 2) normaly differs, depending on the size of the inodes
- mostly 2) is greater than 1) (in the order of any kB)
- filesize($file) gives 1)
- "du -ab $file" gives 2)
so you have to choose your situation!
on my server I have no rights to use "exec du" in the case of 2), so I use:
$s = stat($file);
$size = $s[11]*$s[12]/8);
whitch is counting the inodes [12] times the size of them in Bits [11]
hopes this helps to count the used disk place in a right way... :-)
Andreas Dickfunction roundsize($size){
$i=0;
$iec = array("B", "Kb", "Mb", "Gb", "Tb");
while (($size/1024)>1) {
$size=$size/1024;
$i++;}
return(round($size,1)." ".$iec[$i]);}Something that might go well with this function is the ability to list available disks. On Windows, here's the relevant code:
<?php
/**
* Finds a list of disk drives on the server.
* @return array The array velues are the existing disks.
*/
function get_disks(){
if(php_uname('s')=='Windows NT'){
// windows
$disks=`fsutil fsinfo drives`;
$disks=str_word_count($disks,1);
if($disks[0]!='Drives')return '';
unset($disks[0]);
foreach($disks as $key=>$disk)$disks[$key]=$disk.':\\';
return $disks;
}else{
// unix
$data=`mount`;
$data=explode(' ',$data);
$disks=array();
foreach($data as $token)if(substr($token,0,5)=='/dev/')$disks[]=$token;
return $disks;
}
}
?>
EXAMPLE OF USE:
<?php print_r(get_disks()); ?>
EXAMPLE RESULT:
Array
(
[1] => A:\
[2] => C:\
[3] => D:\
[4] => E:\
[5] => F:\
[6] => G:\
[7] => H:\
[8] => I:\
[9] => M:\
[10] => X:\
[11] => Z:\
)
Warning: This also finds empty disk drives (eg; CD or SMD drives or the more common floppy drive).
Warning2: If you want to find space usage using the info from my function, prepend the disk function with the "@", eg:
$free=@disk_free_space('A:\\');<?php
//This is a more readable way of viewing the returned float
// $Bytes contains the total number of bytes on "/"
$Bytes = disk_total_space("/");
function dataSize($Bytes)
{
$Type=array("", "kilo", "mega", "giga", "tera");
$counter=0;
while($Bytes>=1024)
{
$Bytes/=1024;
$counter++;
}
return("".$Bytes." ".$Type[$counter]."bytes");
}
?>