Tijnema ! wrote:
On 3/10/07, Németh Zoltán <znemeth@xxxxxxxxxxxxxx> wrote:
2007. 03. 10, szombat keltezéssel 12.42-kor Riyadh S. Alshaeiq ezt írta:
> Actually if right click on any file or folder on a machine you will
see
that
> there are two values (Size on disk & Size). Files and folders are
stored
on
> the disk in what is called clusters (a group of disk sectors). Size on
disk
> refers to the amount of cluster allocation a file is taking up,
compared
to
> file size which is an actual byte count.
>
> As I mentioned before what I want is a function for getting the result
for
> the Size no for Size on Disk
okay then what about this?
function real_filesize_linux($file) {
@exec("filesize $file",$out,$ret);
if ( $ret <> '0' ) return FALSE;
else return($out[0]);
}
if you want it on a remote machine, you should use something like
ssh2_exec() instead of exec()
hope that helps
Zoltán Németh
He was interested on using it over HTTP, not over SSH...
I don't know if there are faster ways, but you could open a socket to the
host on port 80, get the file, and only read the header where it says
content-length: 400 for example, then you know the file is 400bytes
when you
download it.
something like:
$socket = fsockopen($host,$port);
$size = 0;
while($size == 0)
{
$line = fgets($socket);
if(strlen($line) >= 17)
{
if(substr(strtolower($line),0,14) == "content-length")
{
$size = substr($line,16)
}
}
Now your remote file size is in $size.
It is not too fast, but everything in PHP is fast and so is this.
Tijnema
>
> Riyadh
>
> -----Original Message-----
> From: Németh Zolt?n [mailto:znemeth@xxxxxxxxxxxxxx]
> Sent: 10/Mar/2007 12:27 PM
> To: Riyadh S. Alshaeiq
> Cc: php-general@xxxxxxxxxxxxx
> Subject: Re: FW: looking for two remote functions
>
> I'm afraid I don't understand what you want. The size of a file is its
> size in bytes, that is its size on the disk. So what else?
>
> greets
> Zolt?n Németh
>
> 2007. 03. 10, szombat keltezéssel 06.07-kor Riyadh S. Alshaeiq ezt
?rta:
> > Thank you Mickey, but I have already looked in there and the
function
> posted
> > in the notes is working just fine for getting the size on disk
which I
am
> > not interested in..
> >
> > Riyadh
> >
> > -----Original Message-----
> > From: Mikey [mailto:frak@xxxxxxxxxx]
> > Sent: 9/Mar/2007 2:57 PM
> > To: php-general@xxxxxxxxxxxxx
> > Subject: Re: looking for two remote functions
> >
> > Riyadh S. Alshaeiq wrote:
> > > Hello everybody,
> > >
> > > I am looking for an HTTP function for getting remote filesizes.
Keeping
> > in
> > > mind that I am NOT interested in getting the "size on disk"
figure,
I
> need
> > > the actual size of the files when downloaded to a local machine.
Please
> > let
> > > me know if there are any..
> > >
> > > Another thing, I also need a remote function that gets the created
date
> > and
> > > last modified separately, if possible..
> > >
> > > Best regards
> > >
> > >
> > >
> > >
> >
> > Try looking here:
> >
> > http://uk.php.net/manual/en/function.filesize.php
> >
> > If the function itself isn't of use to you, look further down in the
> > notes and I am sure you will find something useful.
> >
> > Mikey
> >
>
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This question has come up before, and out of curiosity I did some
checking. If you use firefox liveheaders, it turns out that the file
size on the linux file system is exactly the size shown in the
content-length header. This is also the same size as returned by php's
filesize() and by the php stat() in its size element. Linux reports the
actual file size, not the storage size, which you can get by asking to
see the number of blocks used to store the file (ls -ls).
I wrote a small perl script which returns the bytes read when a file is
read from the disk and it, too, agrees with the filesize and header
sizes. In Windows, the actual filesize is also returned by filesize and
stat, not the size on disk (filesize uses stat). Also, in the PHP
manual, the fread example uses filesize to set the number of bytes to read:
| contents = fread($handle, filesize($filename));
|The point of this is to read in the exact number of bytes for the file,
not the entire size of the file's storage on disk which would contain
garbage. This has to work on both windows and linux.
Here's the perl script:
use strict;
use Fcntl;
sysopen (FH, "index.htm", O_RDONLY);
my $buffer;
my $len = sysread(FH, $buffer, 8192,0);
print $len,"\n";
If you are really anxious about size you can exec out to this script and
get the file size.
--
_____________________
Myron Turner
http://www.room535.org
http://www.bstatzero.org
http://www.mturner.org/XML_PullParser/
