change image file size

[proctk]

i have a form that allows users to up load images.  the code is set to end and give an error message if the file is bigger then the set peramitor.  is there php script that can reduce the image file size when the user try to upload the file

[redarrow]

gd

imageresample function.

[proctk]

where would i find info on this

[redarrow]

http://uk.php.net/manual/en/function.imagecopyresampled.php

[proctk]

HI I have been able to get to this point but get the error message as noted below

 

I think that I'm getting closer.  I found the code within this script on the php website but I'm getting this message

Warning: Division by zero in /mnt/w0400/d11/s01/b02a5c57/www/familyclick.ca/photos/album.php on line 116

Warning: imagecreatetruecolor() [function.imagecreatetruecolor]: Invalid image dimensions in /mnt/w0400/d11/s01/b02a5c57/www/familyclick.ca/photos/album.php on line 125

Warning: imagecopyresampled(): supplied argument is not a valid Image resource in /mnt/w0400/d11/s01/b02a5c57/www/familyclick.ca/photos/album.php on line 127

any help is excellent

[code=php:0]
//Upload Images
$path = '../user_images/';
if(isset($_POST['upLoadImages'])){

foreach ($_FILES['file']['tmp_name'] as $i => $val) :
if (is_uploaded_file($_FILES['file']['tmp_name'][$i])) {

/*if ($_FILES['file']['size'][$i]>$max_file_size) { 

	$msg = "Image Exceeds maximum file size"; 

	header("location: $url?msg=$msg");
	exit;

	 }*/

if (($_FILES['file']['type'][$i]=="image/gif") || ($_FILES['file']['type'][$i]=="image/pjpeg") || ($_FILES['file']['type'][$i]=="image/jpeg") || ($_FILES['file']['type'][$i]=="image/png")) {

if (file_exists($path . $_FILES['file']['name'][$i])) { 


$msg .= "The file already exists, change your file name"; 

header("location: $url?msg=$msg");
exit; 


}// Load image

// The file
$filename = $HTTP_POST_FILES['file']['temp'][$i];

// Set a maximum height and width
$width = 200;
$height = 200;

// Content type
/*header('Content-type: image/jpeg');*/

// Get new dimensions
list($width_orig, $height_orig) = getimagesize($filename);

$ratio_orig = $width_orig/$height_orig;

if ($width/$height > $ratio_orig) {
   $width = $height*$ratio_orig;
} else {
   $height = $width/$ratio_orig;
}

// Resample
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($filename);
imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);

// Output
echo $image_p;
echo $image;


$res = copy($HTTP_POST_FILES['file']['tmp_name'][$i], $path.$user_name."-".$HTTP_POST_FILES['file']['name'][$i]);

if (!$res) { 

$msg .= "upload failed!"; 

header("location: $url?msg=$msg");

exit; 

} 

} else { 

header("location: $url?msg=$msg");



$msg .="Wrong file type, Must be jpeg, gif  or png file types"; exit; }


$image = $user_name."-".$HTTP_POST_FILES['file']['name'][$i];

//Set Image Size
$image_size = $_FILES['file']['size'][$i];

[/code]