Image resizing & uploading - Please help!

[discostudio]

I currently use a upload function to upload GIF images to my server.

// Upload Large Image
$upload_path = $_SERVER['DOCUMENT_ROOT']."/images/largeimages/";
		$upload_name = $product_id.".gif";
$File = $_FILES['img']['tmp_name']; 

    $FileCopyWorked = @copy("$File", "$upload_path$upload_name"); 

if ($FileCopyWorked) { 
    echo "Large image has been uploaded successfully<br />"; 
} 
else 
{ 
    echo "Large image has not been uploaded please upload it manually.<br />"; 
}

// Upload Thumbnail Image
$upload_t_path = $_SERVER['DOCUMENT_ROOT']."/images/thumbnails/";
		$upload_t_name = $product_id.".gif";
$File_t = $_FILES['Thumbimg']['tmp_name']; 

    $FileCopyWorked = @copy("$File_t", "$upload_t_path$upload_t_name"); 

if ($FileCopyWorked) { 
    echo "Small image has been uploaded successfully<br />"; 
} 
else 
{ 
    echo "Small image has not been uploaded please upload it manually.<br />"; 
}

I use this function 3 times every time I need to upload a new image because I use 3 different sizes of image for the website.

Therefore I change the image size to what I need with Photoshop.

I want the function to do it automatically, but I have absolutely no idea where to start.

Could anyone come up with a piece of code which would move the image from the directory above to a new directory called /thumbnails/ but with a size of 100pixels by 100pixels.

Remember, I am using GIF files, I have been told that this may cause a problem.

Please help.........

[FMB]

From php.net:

Note: Since all GIF support was removed from the GD library in version 1.6, this function is not available if you are using that version of the GD library.

So I guess you're luck has ran out 🙁

[FMB]

altho, I also found this:

from: http://www.boutell.com/gd/faq.html

Does gd support GIF images?
Yes. Support for GIF was restored in gd 2.0.28 on July 21st, 2004. Basic support for GIF animation is planned for an upcoming release. Note that gdlib-config --features can be used to list the image formats supported by gd. Versions of gdlib-config prior to recent updates do not support the --features option, which can be understood to mean GIF is not available.

So, check the GD version of your server. You can find this in <? phpinfo();?>

[Weedpacket]

But if you've got the choice there's no reason why you wouldn't use PNG instead.

[discostudio]

Well I have gd version: bundled (2.0.23 compatible)

Erm,

So how would I change the images from .gif to .png:
(or I would prefere .jpg to be honest).

$sql=mysql_query("SELECT * FROM products");
while($r=mysql_fetch_array($sql)) {

/*change each product image from .gif to .jpg respectively...

I guest it kinda goes like this:

step1: Open the .gif file
step2: Convert the file
step3: Save the new .jpg file.

*/

}

What code would I put there, I know absolutely nothing about converting images, remember I'm just changing them from .gif files to .jpg files i don't need to resize yet. Allthough I will need to resize later, as I upload new product images.

[discostudio]

OK I just tried this:

<?php
include('admin_config.php');

$sql=mysql_query("SELECT * FROM products"); 
while($r=mysql_fetch_array($sql)) { 

# Constants
define(IMAGE_BASE, $_SERVER['DOCUMENT_ROOT']."/images/thumbnails");
$image_path = IMAGE_BASE . "/" . $r[product_id] . ".gif";

# Load image
$img = null;
$ext = strtolower(end(explode('.', $image_path)));
if ($ext == 'jpg' || $ext == 'jpeg') {
    $img = @imagecreatefromjpeg($image_path);
} else if ($ext == 'png') {
    $img = @imagecreatefrompng($image_path);
} else if ($ext == 'gif') {
    $img = @imagecreatefromgif($image_path);
}
// End load image

if ($img) {

# Get image size and scale ratio
$width = imagesx($img);
$height = imagesy($img);
// create jpg image
$JPGimg = imagecreatetruecolor($width, $height);
// copy GIF to JPG
imagecopy($JPGimg, $img, 0, 0, 0, 0, $width, $height); 

imagedestroy($img);
        $img = $JPGimg;
		echo $img." Image Details<br>";
		}

	// put the file back as a JPG
	$FileCopyWorked = @copy("$JPGimg", IMAGE_BASE . $r[product_id] . ".jpg"); 

if ($FileCopyWorked) { 
    echo "$r[product_id] successful!<br />"; 
} 
else 
{ 
    echo "<b>$r[product_id] NOT successful!</b><br />"; 
}

}// end prod loop




?>

Need i say it doesn't work, can anyone tell me what I'm doing wrong?

[Weedpacket]

Originally posted by discostudio
So how would I change the images from .gif to .png:
(or I would prefere .jpg to be honest).

Well, you implied you had Photoshop at one point, there....
What sort of images are these, incidentally, if you wanted to use GIFs originally but your second choice is JPEG instead of PNG? Usually PNG is a drop-in replacement for GIF, except that it has better compression, and more flexibility.

[discostudio]

Well I have an online DJ shop,

I dont mind using PNG files, just I've never used them before.

I have over 3,000 products in the database, that is over 9,000 images as I have:

thumbnail 100pixels x 100pixels
medium image 200 x 200pixels
Large image (can be any size)

So I want to just upload the large image and then the script to do the rest for me.

But how do I convert all my files to PNG, i thought above I was on the right track, I have no problem conveting them, just saving them back to disk doesnt work.

🙁

[Weedpacket]

Originally posted by discostudio
I have over 3,000 products in the database, that is over 9,000 images as I have:

thumbnail 100pixels x 100pixels
medium image 200 x 200pixels
Large image (can be any size)

So I want to just upload the large image and then the script to do the rest for me.

But how do I convert all my files to PNG, i thought above I was on the right track, I have no problem conveting them, just saving them back to disk doesnt work.

Well, I don't know if you're using a Windows box or a Mac (I can rule out Linux, 'cos Adobe is anti-opensource); on Windows there's a conveient lil app called IrfanView I use when I'm bulk-converting images. You could also use it for the resizing if you want (at least for when you're initially populating the site - it would be a very dull job uploading 3000 images one at a time!)

[egg_]

<?php
	function create_resized_image($image_filename)
	{
		define("FILE_DIR","C:\\Program Files\\Apache Group\\Apache\\htdocs\\misc_code\\files\\");
		$new_height = 100;
		$new_width = 100;
		$thumbnails_directory = "thumbnails\\";

	$ext = substr($image_filename,-3);
	switch($ext)
	{
		case "jpg":
			$handle = imagecreatefromjpeg(FILE_DIR.$image_filename);
			break;

		case "png":
			$handle = imagecreatefrompng(FILE_DIR.$image_filename);
			break;

		default:
			return;
	}
	$source_width = imagesx($handle);
	$source_height = imagesy($handle);
	$source_aspect_ratio = $source_height/$source_width;
	$new_aspect_ratio = floatval($new_height)/floatval($new_height);
	if ($new_aspect_ratio < $source_aspect_ratio)
	{
		$new_height = floatval($new_height);
		$new_width = $new_height/$source_aspect_ratio;
	}
	elseif ($new_aspect_ratio > $source_aspect_ratio)
	{
		$new_width = floatval($new_width);
		$new_height = $new_width*$source_aspect_ratio;
	}
	else
	{
		$new_width = floatval($new_width);
		$new_height = floatval($new_height);
	}
	$new_image_handle = imagecreatetruecolor($new_width,$new_height);
	imagecopyresampled ($new_image_handle,$handle,0,0,0,0,$new_width,$new_height,$source_width,$source_height);
	switch($ext)
	{
		case "jpg":
			imagejpeg($new_image_handle,FILE_DIR.$thumbnails_directory.$image_filename);
			break;

		case "png":
			imagepng($new_image_handle,FILE_DIR.$thumbnails_directory.$image_filename);
			break;
	}
	imagedestroy($new_image_handle);
	imagedestroy($handle);
}
?>