WWWForm Manual     Reference     Scripting  
Scripting > Runtime Classes > WWWForm
WWWForm Class

Helper class to generate form data to post to web servers using the WWW class.

// Grab a screen shot and upload it to a CGI script.
// The CGI script must be able to hande form uploads.
var screenShotURL= "http://www.my-server.com/cgi-bin/screenshot.pl";

// Take a screen shot immediately
function Start() {
UploadPNG();
}

function UploadPNG()
{
// We should only read the screen after all rendering is complete
yield WaitForEndOfFrame();

// Create a texture the size of the screen, RGB24 format
var width = Screen.width;
var height = Screen.height;
var tex = new Texture2D( width, height, TextureFormat.RGB24, false );
// Read screen contents into the texture
tex.ReadPixels( Rect(0, 0, width, height), 0, 0 );
tex.Apply();

// Encode texture into PNG
var bytes = tex.EncodeToPNG();
Destroy( tex );

// Create a Web Form
var form = new WWWForm();
form.AddField("frameCount", Time.frameCount.ToString());
form.AddBinaryData("fileUpload", bytes, "screenShot.png", "image/png");

// Upload to a cgi script
var w = WWW(screenShotURL, form);
yield w;
if (w.error != null)
{
print(w.error);
}
else
{
print("Finished Uploading Screenshot");
}
}

Here is a sample Perl script that processes the high scores stored in a table in an SQL database.

// This example assumes that the user has entered his name into a
// variable called name and that score contains the user's current
// score.

var highscore_url="http://www.my-site.com/highscores.pl";

function Start() {
// Create a form object for sending high score data to the server
var form = new WWWForm();
// Assuming the perl script manages high scores for different games
form.AddField( "game", "MyGameName" );
// The name of the player submitting the scores
form.AddField( "playerName", name );
// The score
form.AddField( "score", score );

// Create a download object
var download = new WWW( highscore_url, form );

// Wait until the download is done
yield download;

if(download.error) {
print( "Error downloading: " + download.error );
}
else {
// show the highscores
}
}

Here is a sample Perl script that processes the high scores stored in a table in an SQL database.

#!/usr/bin/perl
# The SQL database needs to have a table called highscores
# that looks something like this:
#
# CREATE TABLE highscores (
# game varchar(255) NOT NULL,
# player varchar(255) NOT NULL,
# score integer NOT NULL
# );
#
use strict;
use CGI;
use DBI;

# Read form data etc.
my $cgi = new CGI;

# The results from the high score script will be in plain text
print $cgi->header("text/plain");

my $game = $cgi->param('game');
my $playerName = $cgi->param('playerName');
my $score = $cgi->param('score');

exit 0 unless $game; # This parameter is required

# Connect to a database
my $dbh = DBI->connect( 'DBI:mysql:databasename', 'username', 'password' )
|| die "Could not connect to database: $DBI::errstr";

# Insert the player score if there are any
if( $playerName && $score) {
$dbh->do( "insert into highscores (game, player, score) values(?,?,?)",
undef, $game, $playerName, $score );
}

# Fetch the high scores
my $sth = $dbh->prepare(
'SELECT player, score FROM highscores WHERE game=? ORDER BY score desc LIMIT 10' );
$sth->execute($game);
while (my $r = $sth->fetchrow_arrayref) {
print join(':',@$r),"\n"
}

Variables
headers

(Read Only) Returns the correct request headers for posting the form using the WWW class.

data

(Read Only) The raw data to pass as the POST request body when sending the form.

Constructors
WWWForm

Creates an empty WWWForm object.

Functions
AddField

Add a simple field to the form.

AddBinaryData

Add binary data to the form.