How to get number of uploaded bytes in php

[phpasks]

Ok! I was looking through an AJAX upload script and what it did was open the temp file up and get its size.

//Class to store read info
class ReadStatus{
    var $is_dir_error = 0;
    var $open_dir_error = 0;
    var $active = 0;
    var $uploaded_files = 0;
    var $bytes_uploaded = 0;
}

// Return the current size of the $_GET['temp_dir_sid'] - flength file size.
function GetBytesRead($temp_dir, $upload_id){
    $read_status = new ReadStatus;
    $temp_upload_dir = $temp_dir . $upload_id . '.dir';
    $flength_file = $temp_dir . $upload_id . '.dir/' . $upload_id . '.flength';

    if(is_dir($temp_upload_dir) && file_exists($flength_file)){
        if($handle = opendir($temp_upload_dir)){
            while(false !== ($file_name = readdir($handle))){
                if(($file_name != '.') && ($file_name != '..') && ($file_name != $flength_file)){
                    $read_status->bytes_uploaded += filesize($temp_upload_dir . '/' . $file_name);
                    $read_status->uploaded_files++;
                }
            }
            closedir($handle);

            $read_status->active = 1;

            if($read_status->uploaded_files > 0){ $read_status->uploaded_files -= 1; }
        }
        else{ $read_status->open_dir_error = 1; }
    }
    else{ $read_status->is_dir_error = 1; }

    return $read_status;
}

Taken from Uber Uploader (uber_get_progress.php).

This is very good example for read image uploading bytes.

You can use this example - I am preferring to you.

 

[oscetips]

reading the uploaded bytes is not a big problem in my opinion. but its the ability to be able to access a file to read which is the issue!
as i previously said, PHP does not allow access to the data whilst uploading, so you need to use Perl/CGI..

To do this - create your basic html upload form. and also create an invisible iframe. post the form to the iframe.

this is my upload.cgi script stripped to basics:

#!/usr/bin/perl -w

use CGI;
use Fcntl qw(:DEFAULT :flock);
use CGI::Carp qw/fatalsToBrowser/;

$len = $ENV{'CONTENT_LENGTH'};
open(FS,">../uploading/len.txt");
print FS $len;
close FS;

$query = new CGI;


$upload_dir = "../videos/".$query->param("id");
$filename = $query->param("vidfile");
$filename =~ s/.*[\/\\](.*)/$1/;
$upload_filehandle = $query->upload("vidfile");

print "Content-type: text/html\n\n";
print "uploading...";



open(UPLOADFILE, ">$upload_dir/$filename") or die "Can't open '$upload_dir/$filename': $!";
binmode UPLOADFILE;
$|=1;


while (read ($upload_filehandle ,$LINE, 4096) && $bRead < $len ){
$bRead += length $LINE;

select(undef, undef, undef,0.35); # sleep for 0.35 of a second.

$i++;
print UPLOADFILE $LINE;
}


close UPLOADFILE;

print "done!";

len.txt will hold the total size of your upload. and the sizeof "$upload_dir/$filename" tells you your progress .....

this script works for me except thers a huuge delay before uploading occurs... can anyone shed some light on this please?

 

[mattura]

Sorry to re-ignite this issue, but I found an APC call in php>5.2 that does in fact have an indicator of how much of a file has been uploaded so far, allowing a php progress indicator! See the link:

http://docs.php.net/manual/en/apc.configuration.php#ini.apc.rfc1867

 

[misson]

Good catch. Sadly, APC doesn't seem to be installed on the free hosts.