disk_free_space

(PHP 4 >= 4.0.7, PHP 5)

disk_free_space — Returns available space in directory

Description

float disk_free_space ( string $directory )

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

Parameters

directory: A directory of the filesystem or disk partition.

Note: Given a file name instead of a directory, the behaviour of the function is unspecified and may differ between operating systems and PHP versions.

Return Values

Returns the number of available bytes as a float.

Examples

Example #1 disk_free_space() example


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

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

Notes

Note: This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.


A cleaner and more efficient way of making human readable file sizes:



<?php

function decodeSize( $bytes )

{

    $types = array( 'B', 'KB', 'MB', 'GB', 'TB' );

    for( $i = 0; $bytes >= 1024 && $i < ( count( $types ) -1 ); $bytes /= 1024, $i++ );

    return( round( $bytes, 2 ) . " " . $types[$i] );

}

?>

root at mantoru dot de
06-Dec-2007 04:25


Note that disk_free_space() does an open_basedir check.

Nitrogen
11-Jan-2007 01:50


Another easy way to convert bytes to human readable sizes would be this:



<?php

function HumanSize($Bytes)

{

  $Type=array("", "kilo", "mega", "giga", "tera", "peta", "exa", "zetta", "yotta");

  $Index=0;

  while($Bytes>=1024)

  {

    $Bytes/=1024;

    $Index++;

  }

  return("".$Bytes." ".$Type[$Index]."bytes");

}

?>



It simply takes the $Bytes and divides it by 1024 bytes untill it's no longer over or equal to 1024, meanwhile it increases the $Index to allocate which suffix belongs to the return (adding 'bytes' to the end to save some space).

You can easily modify it so it's shorter, but I made it so it's more clearer.



Nitrogen.

mixar at yandex dot ru
04-Dec-2006 11:33


This the right function is:



function formatSize($size){

    switch (true){

    case ($size > 1099511627776):

        $size /= 1099511627776;

        $suffix = 'TB';

    break;

    case ($size > 1073741824):

        $size /= 1073741824;

        $suffix = 'GB';

    break;

    case ($size > 1048576):

        $size /= 1048576;

        $suffix = 'MB';    

    break;

    case ($size > 1024):

        $size /= 1024;

        $suffix = 'KB';

        break;

    default:

        $suffix = 'B';

    }

    return round($size, 2).$suffix;

}

djneoform at gmail dot com
12-Jul-2006 03:13


List all drives, free space, total space and percentage free.



<?

    for ($i = 67; $i <= 90; $i++)

    {

        $drive = chr($i);

        if (is_dir($drive.':'))

        {

            $freespace             = disk_free_space($drive.':');

            $total_space         = disk_total_space($drive.':');

            $percentage_free     = $freespace ? round($freespace / $total_space, 2) * 100 : 0;

            echo $drive.': '.to_readble_size($freespace).' / '.to_readble_size($total_space).' ['.$percentage_free.'%]<br />';

        }

    }



    function to_readble_size($size)

    {

        switch (true)

        {

            case ($size > 1000000000000):

                $size /= 1000000000000;

                $suffix = 'TB';

                break;

            case ($size > 1000000000):

                $size /= 1000000000;

                $suffix = 'GB';

                break;

            case ($size > 1000000):

                $size /= 1000000;

                $suffix = 'MB';    

                break;

            case ($size > 1000):

                $size /= 1000;

                $suffix = 'KB';

                break;

            default:

                $suffix = 'B';

        }

        return round($size, 2).$suffix;

    }

?>

Ashraf M Kaabi
02-Mar-2005 04:38


and also you can know the used space , in this 


example :


<?


function disk_used_space($drive)


{


    return disk_total_space("$drive:") - disk_free_space("$drive:");


}





echo disk_used_space('C');


?>

aidan at php dot net
16-Oct-2004 01:49


To make human readable file sizes, see this function:





http://aidanlister.com/repos/v/function.size_readable.php

add a note

disk_total_space

dirname

Last updated: Fri, 15 Aug 2008