Hi,

I tried with php 7 on Joomla! 3.5 and got an error.
Do you know and will there be an update?
The use of Zebra_Image is a part in JEM -Joomlaeventmanager. And I like it.

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; Zebra_Image has a deprecated constructor in /srv/www/vhosts/mysite.ch/httpdocs/components/com_jem/classes/Zebra_Image.php on line 46

I need to crop image with Circle shape not Square. Is there any way to do this with Zebra Image Library?

Zebra_image.php:1523 imagecreatefromwebp() fails when loading an animated webp image.
It throws this exception: ErrorException: gd-webp cannot allocate temporary buffer

It has nothing to do with any buffer. It just seems to be not implemented into libgd at the moment.

Maybe a fix is to add a ZebraImage error saying that libgd does not currently support this?

This seems to be a good function to check if a webp image is animated:
https://stackoverflow.com/a/61242086

Sources:
libgd/libgd#648
https://bugs.php.net/bug.php?id=79809&thanks=4
https://www.php.net/manual/en/function.imagecreatefromwebp.php

I might pick this up myself but wanted to create the issue first.

how can I write multiple images like thumb, medium size, whole image, etc/.

Composer does not pick up on the 2.3.0 release.

There were changes in how applications interact with GitHub recently. Usually packagist will offer to fix things if you sign in to packagist.org and check your packages.

Zebra version: "stefangabos/zebra_image": "^2.8"
PHP Version 8.1.12
GD Version | bundled (2.1.0 compatible)

Zebra_Image stops executing on some gif images on my site. It fails hard so I have to add a try catch around the Zebra code. No image is generated.

The error is: imagecolorsforindex Argument #2 ($color) is out of range
Line: 1491

$this->source_transparent_color = @imagecolorsforindex($identifier, $this->source_transparent_color_index);

Seems like source_transparent_color_index is greater than the total number of colors in the image.

Similiar errors and solutions:
Stackoverflow
ProcessWire

If I change line 1491 to this it works.

if ($this->source_transparent_color_index <= imagecolorstotal($identifier)) { $this->source_transparent_color = @imagecolorsforindex($identifier, $this->source_transparent_color_index); }

Example gif:

Is there any plan to support webp?

I'm getting this warning:

Notice: Undefined variable: arguments in .../vendor/stefangabos/zebra_image/Zebra_Image.php on line 429.

I've seen i don't have the filter installed, but the variable should be defined.

Edit: just to help, i tried to use 'gausian_blur' filter.

Edit 2: Zebra docs is wrong, the correct is 'gaussian_blur' not 'gausian_blur' that's how a got the error. Even so, the warning shoudn't happen.

Hey

i have the problem that the example of you works on FireFox but not on chrome is this a well known issue or is has it something to do with my browser

Need switch option to set JPEG output as progressive/interlaced in GD
Thank you

All resize mode except ZEBRA_IMAGE_BOXED and ZEBRA_IMAGE_NOT_BOXED and ZEBRA_IMAGE_CROP_TOPLEFT (obviously) doesn't work as intented, they all start cropping from top left just like ZEBRA_IMAGE_CROP_TOPLEFT

using this test code in PHP 8.1 environment

<?php
require "Zebra_Image.php";

$mode = [ZEBRA_IMAGE_BOXED,
		ZEBRA_IMAGE_NOT_BOXED,
		ZEBRA_IMAGE_CROP_TOPLEFT,
		ZEBRA_IMAGE_CROP_TOPCENTER,
                ZEBRA_IMAGE_CROP_TOPRIGHT,
                ZEBRA_IMAGE_CROP_MIDDLELEFT,
                ZEBRA_IMAGE_CROP_CENTER,
                ZEBRA_IMAGE_CROP_MIDDLERIGHT,
                ZEBRA_IMAGE_CROP_BOTTOMLEFT,
                ZEBRA_IMAGE_CROP_BOTTOMCENTER,
                ZEBRA_IMAGE_CROP_BOTTOMRIGHT];
		
function saveImage($mode)
{
	$image = new Zebra_Image(); 
	$image->source_path = 'test.jpg';
	$image->target_path = 'test-thumb-'.$mode.'.jpg';
	$image->jpeg_quality = 60;
	$image->preserve_aspect_ratio = true;
	$image->enlarge_smaller_images = true;        
	$image->preserve_time = true;
	$image->handle_exif_orientation_tag = true;
	$image->sharpen = true;
	$image->jpeg_interlace = true;        
	$image->resize(200, 200, $mode);
        
	return $image->error;
}

echo '<img src="test.jpg" /><br />';
foreach ($mode as $m) {
	saveImage($m);	
        echo '<img src="test-thumb-'.$m.'.jpg" />';
}
?>

Hello,

Is it possible to set a blur level when applying the 'gaussian blur' filter?

Regards,

Does the author consider supporting ico and bmp formats?
It seems that it is not supported now

Version 2.8.1 tagged on GitHub, also version 2.8.1 tagged on Packagist, yet the Packagist version suffers from the WEBP animation detection bug:

LINE 1536: case IMAGETYPE_WEBP:

                    // because animated WEBP images are not supported
                    // we need to check if this is such a file
                    // WEBP file header https://developers.google.com/speed/webp/docs/riff_container
                    // solution from by Sven Liivak https://stackoverflow.com/questions/45190469/how-to-identify-whether-webp-image-is-static-or-animated#answer-52333192

                    $fh = fopen($this->source_path, 'rb');

                    // let's see if this is the "Extended" file format
                    fseek($fh, 12);

                    // if this is the extended file format
                    if (fread($fh, 4) === 'VP8X') {

                        // look for the "Animation (A)" bit
LINE 1552:              fseek($fh, 16); <----------------------------------- should be 20, not 16

                        // is this is an animated WEBP?
                        $is_animated = ((ord(fread($fh, 1)) >> 1) & 1);

                    }

resizing a png image with an alpha background does not preserve transparency ?

I am trying to overlay this in FFMPEG - it may well be that it requires png colortype=6 ?

PHP message: PHP Warning: exif_read_data(phpM6q1lm): Illegal IFD size in inc/ZebraImage.php on line 1360, referer: url

Could be good to manipulate the picture directly from there stream value, in order to allow the write and read to other tool like gaufrette.

I can't apply any filters because the filters are not defined anywhere. It aways throws an error because the filters are not defined anywhere in the file. Can't find IMG_FILTER_GAUSIAN_BLUR... Was the filter functionality removed?

Hi,

Nice lib, I have a small problem when sending an image to resize, he spins it, how to avoid?

Do you have support for SVG?

Hi, I just wanted to let you know that we use Zebra Image in Libr8, another CMS, and wanted to thank the developer's behind Zebra Image for all their hard work.
https://github.com/StudioJunkyard/Libr8

If auto_handle_exif_orientation is true one gets a warning if file is e.g. a GIF image. This is because only JPEG and TIFF are supported by exif_read_data().

This could be prevented by changing line 1349 from if ($this->auto_handle_exif_orientation)
to if ($this->auto_handle_exif_orientation && ($this->source_type === IMAGETYPE_JPEG))
(because TIFF is not supported by Zebra_Image)

Is it possible to set the background color if the cropped result is outside the image?
Now it gets a black border.
I only see a definition in the resize method but not at the cropping.

Hello!
I'm uploading a file to the server and I want filters to be applied to this file, but I can't.
Can anyone help me?
P.S. I don't speak English and I'm just starting to learn php

`<?php
require 'Zebra_Image.php';
//$auto_handle_exif_orientation = true;
$my_file = $_FILES['filename']['name'];
$uploadfile = basename($_FILES['filename']['name']);

if (move_uploaded_file($_FILES['filename']['tmp_name'], $uploadfile)) {
$image = imagecreatefrompng($uploadfile);
$image = new Zebra_Image();
$image->apply_filter(array(
array('grayscale'),
array('emboss'),
));
header('content-type: image/png');
//imagepng($image);
//imagedestroy($image);
echo $image;
} else {
echo "Error upload file!";
}
?>`