basic upload + conversion script

importune · February 3, 2010

Uh, bit lost at this point. Still new, and possibly in over my head.

I'm trying to make a nfo/txt to PNG image converter for a website. Have to save the png to disc, and discard any uploaded nfo/txt. I can get it to convert and save a PNG image of text that I put into a text box form fairly easily, but I can't manage to get the uploaded file to work.

Its not just the if statement, even though that is screwed up =.=, as I've totally removed it and this still doesn't work. :shrug:

3 Files in total.

index.php

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>my php playground</title>
</head><center>
<form enctype="multipart/form-data" action="nfotest.php" mehtod="post">
Foreground color (e.g. 393939): <input type="text" name="color" /><br />
Background color (e.g. 393939): <input type="text" name="back" /><br />
Choose a file to upload: <br /><input name="file" type="file" size="30" /><br />
<p> - or - </p>
Copypasta the nfo:<br /> <textarea cols="50" rows="15" name="nfo"></textarea><br />
<input type="submit" value="Get um!" />
</form></center>
<body>
</body>
</html>

nfotest.php

<?php
$fore = $_REQUEST['color'];
$back = $_REQUEST['back'];
$rand = rand(0,9999999999999);
$filename = "$rand.png";
    require_once("nfo2png.php");
if($_FILES['file']['tmp_name']){
	$f = file($_FILES['file']['tmp_name']);
	$f = implode("",$f);
	}
else{
	$f = $_REQUEST['nfo'];
	}
    buildNFO($f, "Powered by : EH3:Board", $fore, $back, $filename, $rand);
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<?php 
print('<meta HTTP-EQUIV="REFRESH" content="3; url=http://www.eh3.info/nfo/images/' . $filename . '">');
?>
<title>REDIRECT</title>
</head>
<body>
</body>
</html>

nfo2png.php

<?php
/*
* File    : nfo2png.php
* Created : 14 March 2004
* By      : Stefan Gräfe
*
* NFO2PNG - Small NFO to PNG render library
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

function buildNFO($nfotext, $footer, $fg, $back, $filename, $rand) {
  // Write Headers for PNG
  // header("Content-Type: image/png");
  // header("Content-Disposition: inline; filename=\"$rand.png\"");
  
  if(!strlen($nfotext)) $nfotext = "Empty String submitted.";

  $nfo = explode("\n", $nfotext);
  
  // Load the Bitmap-Font
  $fnt = imageloadfont("nfo2pngfont");
             
  // Check for empty lines
  $fillers = strlen($nfo[1])+strlen($nfo[3])+strlen($nfo[5])+strlen($nfo[7])<9?1:0;
  
  $nxo = array();
  $xmax = 0;
  
  // Reformat each line
  foreach($nfo as $key=>$line){
    $line = chop($line);
    if($xmax < strlen($line)) $xmax = strlen($line);
    if($fillers and ($key & 1)) continue;
    array_push($nxo,$line);
  }
  
  // Show footer
  if(strlen($footer)) {
    array_push($nxo,"");
    $fill = str_repeat(" ",($xmax - strlen($footer)>>1));
    array_push($nxo,$fill.$footer);
  }
  
  // Linecount
  $ymax = count($nxo);
  
  // Set foreground color
  $color = array(0, 0, 0);
  if(strlen($fg) == 6) {
    $color[0] = intval(substr($fg,0,2), 16);
    $color[1] = intval(substr($fg,2,2), 16);
    $color[2] = intval(substr($fg,4,2), 16);
  }
  
   // Set Background color
  $bgcolor = array(0, 0, 0);
  if(strlen($back) == 6) {
    $bgcolor[0] = intval(substr($back,0,2), 16);
    $bgcolor[1] = intval(substr($back,2,2), 16);
    $bgcolor[2] = intval(substr($back,4,2), 16);
  }
                      
  // Render NFO
  $im = ImageCreate($xmax*8,$ymax*16);
  ImageInterlace($im,1); 
  $background_color = imagecolorallocate($im, $bgcolor[0], $bgcolor[1], $bgcolor[2]);
  $text_color = ImageColorAllocate ($im, $color[0], $color[1], $color[2]);
  
  foreach($nxo as $y=>$line)
    ImageString($im, $fnt, 0, $y*16, $line, $text_color);
  ImagePNG($im, "images/$filename", 0, PNG_NO_FILTER);
}
?>

If I wasn't supposed to post the code or something, let me know. Thanks guys. x.x

jammesz · February 3, 2010

i am pretty sure that you need to use move_uploaded_file() function before using the uploaded file to convert to png

importune · February 3, 2010

i am pretty sure that you need to use move_uploaded_file() function before using the uploaded file to convert to png

Thanks for the quick response, and for taking the time to read my mess .

I have tried this, and it still didn't work. I believe it has something to do with my need to call the file before i have its actual filename, as when i use the FILES array in the file() field, it usually fails. I tried to save it to the server and then delete it at the end of the PNG generation, but it still didn't work. I get just about the same error, even when the file is successfully saved to the server.

Anyway- i'd like to accomplish this without having anything other than the final pngs actually saved. Any ideas? :\

EDIT: Btw, this is what i've also tried with no luck->

<?php
$fore = $_REQUEST['color'];
$back = $_REQUEST['back'];
$rand = rand(0,9999999999999);
$filename = "$rand.png";
    require_once("nfo2png.php");
$location = basename( $_FILES['file']['name']);
move_uploaded_file($_FILES['file']['tmp_name'], $location);
	$f = file($location);
	$f = implode("",$f);
    buildNFO($f, "Powered by : EH3:Board", $fore, $back, $filename, $rand);
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<?php 
print('<meta HTTP-EQUIV="REFRESH" content="3; url=http://www.eh3.info/nfo/images/' . $filename . '">');
?>
<title>REDIRECT</title>
</head>
<body>
</body>
</html>

Errors I get from this :

[03-Feb-2010 10:27:07] PHP Warning:  file() [<a href='function.file'>function.file</a>]: Filename cannot be empty in /*/nfotest.php on line 9
[03-Feb-2010 10:27:07] PHP Warning:  implode() [<a href='function.implode'>function.implode</a>]: Invalid arguments passed in /*/nfotest.php on line 10

EDIT: I just tested it and still get the same errors even if i change this:

$f = file($location);

to this:

$f = file("$location");

jammesz · February 3, 2010

your location

 $location = basename( $_FILES['file']['name']);

isn't a proper location (its just a filename). it should at least have './' or '/' before basename( $_FILES['file']['name']).

Also check your file permissions etc.

Im not really sure what the problem is but just hoping this may help.

importune · February 3, 2010

Yeah, I've searched the net for like 6 different basic php upload scripts, they all show a location just like this. I don't want it to go into a different directory or anything, just right there is fine, as when I'm done i'm going to delete the file anyway... :|

I donno dude, thanks for taking a look, hopefully someone has an answer. :shrug:

importune · February 3, 2010

Is it even possible to file() the $_FILES array? I can't find anything :-\

importune · February 3, 2010

An update: I've tried adding the "./" or the "/" multiple ways to both the $location and to the file(). Neither are working. Still says empty string.

jammesz · February 4, 2010

The error message says that $location is empty or doesnt contain a filename and only a directory. So your problem has something todo with that.

importune · February 4, 2010

Lol, figured it out mates. Typo in my html. x.x

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basic upload + conversion script

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