loop for receive multiple upload files....

Hi all!

Iam trying to change this code to recieve 5 input files in order to upload and resize. I now that I must make a LOOP for it, trying and tryinh without sucess!

Anyone can help..actualy it only receive one input..."image".

The code:

<?php
if(isset($_POST['Submit']))
{
$size = 80;
$filedir = 'images/';
$thumbdir = 'images/';
$prefix = 'small_';
$maxfile = '200000';
$mode = '0666';

$userfile_name = $_FILES['image']['name'];
$userfile_tmp = $_FILES['image']['tmp_name'];
$userfile_size = $_FILES['image']['size'];
$userfile_type = $_FILES['image']['type'];
if (isset($_FILES['image']['name']))
{
$prod_img = $filedir.$userfile_name;
$prod_img_thumb = $thumbdir.$prefix.$userfile_name;
move_uploaded_file($userfile_tmp, $prod_img);
chmod ($prod_img, octdec($mode));
$sizes = getimagesize($prod_img);
$aspect_ratio = $sizes[0]/$sizes[1];
if ($sizes[0] <= $size)
{
$new_width = $sizes[0];
$new_height = $sizes[1];
}else{
$new_width = $size;
$new_height = abs($new_width/$aspect_ratio);
}
$destimg = ImageCreateTrueColor($new_width,$new_height) or die('Problem In Creating image');
$srcimg = ImageCreateFromJPEG($prod_img) or die('Problem In opening Source Image');
ImageCopyResized($destimg,$srcimg,0,0,0,0,$new_width,$new_height,ImageSX($srcimg),ImageSY($srcimg)) or die('Problem In resizing');
ImageJPEG($destimg,$prod_img_thumb,90) or die('Problem In saving');
imagedestroy($destimg);
}
print_r($sizes);
echo"width new: $new_width<br>height new: $new_height";
echo '
<br><a href="'.$prod_img.'">
<img src="'.$prod_img_thumb.'" width="'.$new_width.'" heigt="'.$new_height.'">
</a>';
}
else
{
echo '
<form method="POST" action="'.$_SERVER['PHP_SELF'].'" enctype="multipart/form-data">
<input type="file" name="image1"><p>
<input type="file" name="image2"><p>
<input type="file" name="image3"><p>
<input type="file" name="image4"><p>
<input type="file" name="image5"><p>
<input type="Submit" name="Submit" value="Submit">
</form>';
}
?>

After a while I figure how to fix it..Everithing is workink now...but when I make the upload/resize...i receive this error's...

Warning: getimagesize(images/) [function.getimagesize]: failed to open stream: Permission denied in C:\Programas\EasyPHP 2.0b1\www\fotos\teste.php on line 26

Warning: Division by zero in C:\Programas\EasyPHP 2.0b1\www\fotos\teste.php on line 27

Warning: imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions in C:\Programas\EasyPHP 2.0b1\www\fotos\teste.php on line 36
Problem In Creating image

COMPLETE CODE:

<?php
if(isset($_POST['Submit']))
{
$size = 90; // the thumbnail height
$filedir = 'images/'; // the directory for the original image
$thumbdir = 'images/'; // the directory for the thumbnail image
$prefix = 'small_'; // the prefix to be added to the original name
$maxfile = '800000';
$mode = '0666';

$i = 1;
$htmlFieldName = 'image' . $i;
while(isset($_FILES[$htmlFieldName])){

$userfile_name = $_FILES[$htmlFieldName]['name'];
$userfile_tmp = $_FILES[$htmlFieldName]['tmp_name'];
$userfile_size = $_FILES[$htmlFieldName]['size'];
$userfile_type = $_FILES[$htmlFieldName]['type'];

if (isset($_FILES[$htmlFieldName]['name']))
{
$prod_img = $filedir.$userfile_name;
$prod_img_thumb = $thumbdir.$prefix.$userfile_name;
move_uploaded_file($userfile_tmp, $prod_img);
chmod ($prod_img, octdec($mode));
$sizes = getimagesize($prod_img);
$aspect_ratio = $sizes[1]/$sizes[0];
if ($sizes[0] <= $size)
{
$new_width = $sizes[1];
$new_height = $sizes[0];
}else{
$new_height = $size;
$new_width = abs($new_height/$aspect_ratio);
}
$destimg = ImageCreateTrueColor($new_width,$new_height) or die('Problem In Creating image');
$srcimg = ImageCreateFromJPEG($prod_img) or die('Problem In opening Source Image');
ImageCopyResized($destimg,$srcimg,0,0,0,0,$new_width,$new_height,ImageSX($srcimg),ImageSY($srcimg)) or die('Problem In resizing');
ImageJPEG($destimg,$prod_img_thumb,90) or die('Problem In saving');
imagedestroy($destimg);
}
echo '
<br />
<a href="'.$prod_img.'">
<img src="'.$prod_img_thumb.'" width="'.$new_width.'" heigt="'.$new_height.'">
</a>';

$i++;
$htmlFieldName = 'image' . $i;
}
}else{
echo '
<form method="POST" action="'.$_SERVER['PHP_SELF'].'" enctype="multipart/form-data">
<input type="file" name="image1" /><br />
<input type="file" name="image2" /><br />
<input type="file" name="image3" /><br />
<input type="Submit" name="Submit" value="Submit">
</form>';
}
?>

Anyone now's what's wrong????

Anyone!!!!!..please..............