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PHP : Function Reference : Filesystem Functions : disk_total_space

disk_total_space

Returns the total size of a directory (PHP 4 >= 4.0.7, PHP 5)
float disk_total_space ( string directory )

Given a string containing a directory, this function will return the total number of bytes on the corresponding filesystem or disk partition.

Parameters

directory

A directory of the filesystem or disk partition.

Return Values

Returns the total number of bytes as a float.

Examples

Example 623. disk_total_space() example

<?php
// $df contains the total number of bytes available on "/"
$df = disk_total_space("/");

// On Windows:
disk_total_space("C:");
disk_total_space("D:");
?>


Notes

Note:

This function will not work on remote files as the file to be examined must be accessible via the servers filesystem.

Related Examples ( Source code ) » disk_total_space


Code Examples / Notes » disk_total_space

nikolayku

Very simple function that convert bytes to kilobytes, megabytes ...
function ConvertBytes($number)
{
$len = strlen($number);
if($len < 4)
{
return sprintf("%d b", $number);
}
if($len >= 4 && $len <=6)
{
return sprintf("%0.2f Kb", $number/1024);
}
if($len >= 7 && $len <=9)
{
return sprintf("%0.2f Mb", $number/1024/1024);
}

return sprintf("%0.2f Gb", $number/1024/1024/1024);

}


andudi

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 Dick


martijn

This works for me (on a UNIX server):
<?php
function du( $dir )
{
   $res = `du -sk $dir`;             // Unix command
   preg_match( '/\d+/', $res, $KB ); // Parse result
   $MB = round( $KB[0] / 1024, 1 );  // From kilobytes to megabytes
   return $MB;
}
$dirSize = du('/path/to/dir/');
?>


shalless

My first contribution. Trouble is the sum of the byte sizes of the files in your directories is not equal to the amount of disk space consumed, as andudi points out. A 1-byte file occupies 4096 bytes of disk space if the block size is 4096. Couldn't understand why andudi did $s["blksize"]*$s["blocks"]/8. Could only be because $s["blocks"] counts the number of 512-byte disk blocks not the number of $s["blksize"] blocks, so it may as well just be $s["blocks"]*512. Furthermore none of the dirspace suggestions allow for the fact that directories are also files and that they also consume disk space. The following code dskspace addresses all these issues and can also be used to return the disk space consumed by a single non-directory file. It will return much larger numbers than you would have been seeing with any of the other suggestions but I think they are much more realistic:
<?php
function dskspace($dir)
{
  $s = stat($dir);
  $space = $s["blocks"]*512;
  if (is_dir($dir))
  {
    $dh = opendir($dir);
    while (($file = readdir($dh)) !== false)
      if ($file != "." and $file != "..")
        $space += dskspace($dir."/".$file);
    closedir($dh);
  }
  return $space;
}
?>


mat

JulieC:
I think you may have misunderstood - given a directory, this function tells you how big the disk paritition is that the directory exists on.
So disk_total_space("C:\Windows\") will tell you how big drive C is.
It is not suggesting that a directory is a disk partition.


kit

I just did the simple thing -
<?php
function du($dir)
{
   $du = popen("/usr/bin/du -sk $dir", "r");
   $res = fgets($du, 256);
   pclose($du);
   $res = explode(" ", $res);
   
   return $res[0];
}
?>


stierguy1

function 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]);}


tularis

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))));
}


juliec

"filesystem or disk partition" does not equal "directory" for Windows.  Thanks.

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