File Size - won't work

[555sandy]

I need to access a remote file and read it's size. I've no problem accessing the file like this:

file = fopen ("http://full/path/to/file/filename", "r");
if (!$file) {
echo "<p>Unable to open remote file.\n";
exit;
}

But the PHP manual says that filesize won't work on remote files. That seems right as I get nothing with:

$size = filesize($file);
print("<p>File size: $size");
fclose($file);

can anyone help me out here?

[bernouli]

file = fopen ("http://full/path/to/file/filename", "r");

isnt it $file?

[555sandy]

Sorry typo - yes it is:

function checkFile()
{

$file = fopen ("http://full/path/to/file/filename", "r");
if (!$file) {
echo "<p>Unable to open remote file.\n";
exit;
}

[KoshNaranek]

if ($action=='save'){
    if (!$neudatei or $neudatei=="none"){die("<h2>KEINE DATEI!!</h2>");}
    if ($neudatei_size >80000) {die("<h2>Datei zu gross!</h2>");}
    $action='';
    $file1=fopen($neudatei, 'r');
    $data=addslashes(fread($file1, $neudatei_size));
    if (!is_uploaded_file($neudatei)){
        echo "FEHLER";}

$neudatei_size works fine 🙂

[mapostel]

Mmmh.. I think what 555sandy wanted, is to determine the size of a remote file that is not sitting on his/her own server.
The following code works. However, not all servers send the optional "Content-length", and if they don't then it doesn't work. In that case the file would actually be read until the end. So it would be a good idea to limit the amount of data that gets read.
Anyway:

$domain = "www.phpbuilder.com"; #where the file is located
$file = "/images/new-logo.gif";  #path to the file
$host = "www.example.com";     # your own domain
$http = "GET ".$file." HTTP/1.0\r\nHost: ".$host."\r\n\r\n"; 
$fp = fsockopen ($domain, 80, $errno, $errstr, 30); 

if (!$fp) {   #connection can't be etsablished
   echo "$errstr ($errno)<br>\n";  #error 
} 
else {  #connection is OK
    fputs ($fp, $http);   #send http request
    while (!feof($fp)){     # read until end of reply
        $chunk= fgets ($fp,128);  #get a chunk of the reply
        if (strpos($chunk, "ength:")) # "Content-length:" (L/l)
	{ 
	   $size = explode (':', $chunk); #split up at ":"
	   echo "The file has a size of $size[1] bytes<br>";
	   break; # task completed, don't read completely
	} #end if
     }  #end while
    fclose ($fp); #close connection when finished
}  #end else
# based on php-manual example for fsockopen

Hope this helps,

Matthias

[KoshNaranek]

oops... missed the "remote"... :rolleyes:

Your code looks tricky... transfering the file to the local machine - nice idea 🙂

[intenz]

Try this function (not tested before post)...

function filesize2($file)
{
	$data = implode('', file($file));
	$temp = 'temp.dat';
	touch($temp);
	chmod($temp,0666);
	$fp = fopen($temp,'a+');
	if($fp)
	{
		fwrite($fp,$data);
	}
	else
		die('No write permission for ' . $temp);
	return filesize($temp);
	unlink($temp);
}

Usage...

echo filesize2('http://blabla.com/foo.htm');

[mapostel]

Originally posted by KoshNaranek
Your code looks tricky... transfering the file to the local machine - nice idea 🙂 [/B]

Actually, the main point is to only get the header with the length information. Only if things go wrong it (i.e. if there is not length header) it would GET the whole file. But as I said, probably a good idea to limit the number of iterations.

Cheers

M.