dirname
Nice, but please be aware of the prefixes.
SI specifies a lower case 'k' as 1'000 prefix.
It doesn't make sense to use an upper case 'K' as binary prefix,
while the decimal Mega (M and following) prefixes in SI are uppercase.
Furthermore, there are REAL binary prefixes since a few years.
Do it the (newest and recommended) "IEC" way:
KB's are calculated decimal; power of 10 (1000 bytes each)
KiB's are calculated binary; power of 2 (1024 bytes each).
The same goes for MB, MiB and so on...
Feel free to read:
http://en.wikipedia.org/wiki/Binary_prefix
disk_free_space
(PHP 4 >= 4.1.0, PHP 5)
disk_free_space — Devuelve el espacio disponible de un sistema de archivos o partición de disco
Descripción
float disk_free_space
( string
$directory
)Dada una cadena que contiene un directorio, esta función devolverá el número de bytes disponibles en el sistema de archivos o partición de disco correspondiente.
Parámetros
-
directory -
Un directorio del sistema de archivos o partición de disco.
Nota:
Dado un nombre de archivo en vez de un directorio, el comportamiento de la función no está especificado y puede diferir entre sistemas operativos y versiones de PHP.
Valores devueltos
Devuelve el número de bytes disponibles como un float
o FALSE en caso de error.
Ejemplos
Ejemplo #1 Ejemplo de disk_free_space()
<?php
// $df contiene el número de bytes disponibles en "/"
$df = disk_free_space("/");
// En Windows:
$df_c = disk_free_space("C:");
$df_d = disk_free_space("D:");
?>
Notas
Nota: Esta función no funcionará en ficheros remotos ya que el fichero debe ser accesible vía el sistema de ficheros del servidor para poder ser examinado.
Ver también
- disk_total_space() - Devuelve el tamaño total de un sistema de archivos o partición de disco
add a note
User Contributed Notes
disk_free_space - [9 notes]
sam ¶
4 years ago
rostvertol dot mil at gmail dot com ¶
5 years ago
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] );
}
?>
Nitrogen ¶
6 years ago
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.
wiede at gmx dot net ¶
2 years ago
Transformation is possible WITHOUT using loops:
<?php
$bytes = disk_free_space(".");
$si_prefix = array( 'B', 'KB', 'MB', 'GB', 'TB', 'EB', 'ZB', 'YB' );
$base = 1024;
$class = min((int)log($bytes , $base) , count($si_prefix) - 1);
echo $bytes . '<br />';
echo sprintf('%1.2f' , $bytes / pow($base,$class)) . ' ' . $si_prefix[$class] . '<br />';
?>
djneoform at gmail dot com ¶
6 years ago
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).$suffix;
}
?>
crrodriguez at opensuse dot org ¶
1 year ago
Note that you should not rely on this function on linux BTRFS filesystems.read the FAQ for more info
https://btrfs.wiki.kernel.org/articles/f/a/q/FAQ_1fe9.htm
Ashraf M Kaabi ¶
8 years ago
and also you can know the used space , in this
example :
<?
function disk_used_space($drive)
{
return disk_total_space("$drive:") - disk_free_space("$drive:");
}
echo disk_used_space('C');
?>
mixar at yandex dot ru ¶
6 years ago
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;
}