Can you explain what is wrong with the code below. I would expect it to make a gif, instead it gives an error of: Fatal error: Uncaught GmagickException: Can not process empty Gmagick object in /home/github/graphicsmagick/gmagick/test.php:25

$canvas = new Gmagick();

$colors = array(
    'red',
    'white',
    'blue',
    'yellow',
    'black',
);

foreach ($colors as $color) {
    $image = new Gmagick();
    $image->newimage (500, 500, $color);
    //$image->setImageFormat("PNG");
    //$image->writeImage("./test_$color.png");
    $canvas->addImage($image);
}

$canvas->setImageFormat("PNG");
$canvas->writeImages("./output.gif");

On https://pecl.php.net/package/gmagick

Browse Sources => http://svn.php.net/pecl/gmagick

If I'm right, this repo is the correct sources tree, please fix.

Build is ok, but trying to load the extension raise a fatal error.

 PHP Fatal error:  Cannot redefine class constant Gmagick::INTERLACE_LINE in Unknown on line 0

FYI: same issue affects "crypto", fixed in bukka/php-crypto@ee493a2

Gmagick::destroy() is documented as returning bool:

https://github.com/vitoc/gmagick/blob/master/gmagick_methods.c#L748

However, it may return false or Gmagick.

If this is intended, it would need to be documented as returning Gmagick|bool.

If this is not, then maybe the code should be changed to return true or false?

A bug report is pending to properly update the PHP documentation:
https://bugs.php.net/bug.php?id=71762

Try this code:

$method = new ReflectionMethod('Gmagick', 'thresholdimage');
$parameters = $method->getParameters();
$parameters[1]->getDefaultValue();

You'll have that PHP throws an Error:

Uncaught Error: Undefined constant "CHANNEL_DEFAULT"

Maybe is there some reference to CHANNEL_DEFAULT instead of Gmagick::CHANNEL_DEFAULT somewhere?

When I install php-gmagick using brew to be used on my MacOS Yosemite 10.10, I got the following error message with php-gmagick enabled:

Fractal:conf.d admin$ php -v
php(12688,0x7fff7a504300) malloc: *** error for object 0x1047f21f0: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Abort trap: 6

Installed with

brew install php56
brew install php56-gmagick php56-mcrypt  php56-pdo-pgsql php56-xdebug

If I remove php-gmagick, all is ok.

Hi, I encountered a strange problem, after scale image:
1、gm cli and pgmagick(python):
>> gm convert a.jpg -scale 374x269 a_374x269.jpg
>> im.scale('374x269')
Result: image a_374x269.jpg is 359x269
2、gmagick:
>> $image->scaleimage(374, 269, true)
Result: image a_374x269.jpg is 358x269

Thank you!

Can you please add support for this function?

PingImage() returns all the attributes of an image or image sequence except for the pixels. It is much faster and consumes far less memory than ReadImage(). On failure, a NULL image is returned and exception describes the reason for the failure.

http://www.graphicsmagick.org/api/constitute.html#pingimage

 Fatal error: Uncaught GmagickException: Unable to open file (/dev/shm/BUILD/php70-php-pecl-gmagick-2.0.1/NTS/tests/hald_8.png) in /dev/shm/BUILD/php70-php-pecl-gmagick-2.0.1/NTS/tests/gmagick-117_haldClutImage_basic.php:6
 Stack trace:
 #0 /dev/shm/BUILD/php70-php-pecl-gmagick-2.0.1/NTS/tests/gmagick-117_haldClutImage_basic.php(6): Gmagick->__construct('/dev/shm/BUILD/...')
 #1 /dev/shm/BUILD/php70-php-pecl-gmagick-2.0.1/NTS/tests/gmagick-117_haldClutImage_basic.php(14): haldClutImage()
 #2 {main}

Trivial fix, please add the image to package.xml

Gmagick doesn't yet have an analogue of Imagick's setResolution function. Are there plans for adding it? I could contribute it myself, if this would help.

Hi,

I encountered a bug in coalesceImages with some animated gifs. No problem with Imagick.

Here is my test code:

$image = new Gmagick();
$image->readImageBlob($object->getData());
if($image->getNumberImages() > 1){
    $image = $image->coalesceImages();
    do {
        $frame = $image->current();
        $frame->cropThumbnailImage($width, $height);
        $frame->setCompressionQuality(85);
    }while($image->nextImage());
    $image = $image->deconstructimages();

}else{
    $image->cropThumbnailImage($width, $height);
    $image->setCompressionQuality(85);
}
echo $image->getImagesBlob();

And here is an image for test:

(sorry, I randomly picked an image from a blog)

If I try to crop it with $width=400 and $height=400:

The methods below are missing, I'm going to post these here, with some instructions for someone who wants to contribute to follow.

DrawingWand:
Missing: CloneDrawingWand
Missing: DrawClearException
Missing: DrawGetException
Missing: DrawMatte
Missing: DrawPeekGraphicContext
Missing: DrawRender
Missing: DrawSetStopColor

PixelWand:
Missing: ClonePixelWand
Missing: ClonePixelWands

Missing: PixelGetBlackQuantum
Missing: PixelGetBlueQuantum
Missing: PixelGetCyanQuantum
Missing: PixelGetGreenQuantum
Missing: PixelGetMagentaQuantum
Missing: PixelGetOpacityQuantum
Missing: PixelGetRedQuantum
Missing: PixelGetYellowQuantum
Missing: PixelSetBlackQuantum
Missing: PixelSetBlueQuantum
Missing: PixelSetColorCount
Missing: PixelSetCyanQuantum
Missing: PixelSetGreenQuantum
Missing: PixelSetMagentaQuantum
Missing: PixelSetOpacityQuantum
Missing: PixelSetQuantumColor
Missing: PixelSetRedQuantum
Missing: PixelSetYellowQuantum

Missing: MagickAnimateImages
Missing: MagickDescribeImage
Missing: MagickGetImagePixels
Missing: MagickOpaqueImage
Missing: MagickPingImage
Missing: MagickSetImagePixels
Missing: MagickTransparentImage

Hi,

I've noticed that all my Gmagick code runs on a single CPU core, which is a pity on servers with 8 cores or more, given that GraphicsMagick supports OpenMP.

Is there a reason for this? Imagick leaves the choice to enable OpenMP, can we do the same for Gmagick?

Currently, Gmagick provides support for contrastimage(), but not for brightnesscontrastimage().

The MagickBrightnessContrastImage() is here:
https://www.imagemagick.org/api/MagickWand/magick-image_8c_source.html#l01053

Could you please add support for it? Thank you!

I used to try package 2.0.6RC1 for Alpinelinux (musl libc) for different architectures (graphicsmagick 1.3.36)

https://gitlab.alpinelinux.org/alpine/aports/-/merge_requests/18208

The only failed test is

TEST 61/187 [tests/gmagick-056-set_getsamplingfactors.phpt]
========DIFF========
     Array
     (
         [0] => 1
004-     [1] => 2
     )
========DONE========
FAIL Set, getsamplingfactors [tests/gmagick-056-set_getsamplingfactors.phpt]

There are no tags in this git repository. I expected to see a tag for each version of this project that has been released.

(gdb) bt
#0 0x00007f9985fd15c9 in raise () from /lib64/libc.so.6
#1 0x00007f9985fd2e18 in abort () from /lib64/libc.so.6
#2 0x00007f997a867338 in MagickPanicSignalHandler () from /usr/local/GraphicsMagick/lib/libGraphicsMagick.so.3
#3
#4 0x0000000000834538 in zend_std_object_get_class (object=0x35ab470) at /home/work/env/php/php-5.6.15/Zend/zend_object_handlers.c:1528
#5 0x0000000000859533 in ZEND_INIT_METHOD_CALL_SPEC_VAR_CONST_HANDLER (execute_data=0x7f99894c8940)

at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:15736

#6 0x0000000000844808 in execute_ex (execute_data=0x7f99894c8940) at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:363
#7 0x00000000007ff9d3 in zend_call_function (fci=fci@entry=0x7fff0e0b87e0, fci_cache=, fci_cache@entry=0x7fff0e0b87b0)

at /home/work/env/php/php-5.6.15/Zend/zend_execute_API.c:829

#8 0x0000000000825b45 in zend_call_method (object_pp=object_pp@entry=0x7fff0e0b8898, obj_ce=,

fn_proxy=fn_proxy@entry=0x7fff0e0b8890, function_name=function_name@entry=0xac6b0d "__destruct", 
function_name_len=function_name_len@entry=10, retval_ptr_ptr=retval_ptr_ptr@entry=0x0, param_count=param_count@entry=0, 
arg1=arg1@entry=0x0, arg2=arg2@entry=0x0) at /home/work/env/php/php-5.6.15/Zend/zend_interfaces.c:97

#9 0x00000000008340a2 in zend_objects_destroy_object (object=0x35a6840, handle=)

at /home/work/env/php/php-5.6.15/Zend/zend_objects.c:123

#10 0x000000000082dd46 in gc_collect_cycles () at /home/work/env/php/php-5.6.15/Zend/zend_gc.c:811
#11 0x000000000082e292 in gc_zval_possible_root (zv=zv@entry=0x6e8a638) at /home/work/env/php/php-5.6.15/Zend/zend_gc.c:163
#12 0x00000000008b409e in gc_zval_check_possible_root (z=0x6e8a638) at /home/work/env/php/php-5.6.15/Zend/zend_gc.h:183
#13 i_zval_ptr_dtor (zval_ptr=0x6e8a638) at /home/work/env/php/php-5.6.15/Zend/zend_execute.h:86
#14 zend_vm_stack_clear_multiple (nested=0) at /home/work/env/php/php-5.6.15/Zend/zend_execute.h:308
#15 zend_do_fcall_common_helper_SPEC (execute_data=) at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:650
#16 0x0000000000844808 in execute_ex (execute_data=0x7f99894c87e8) at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:363
#17 0x00000000007ff9d3 in zend_call_function (fci=fci@entry=0x7fff0e0b8c60, fci_cache=, fci_cache@entry=0x7fff0e0b8c30)

at /home/work/env/php/php-5.6.15/Zend/zend_execute_API.c:829

#18 0x0000000000825b45 in zend_call_method (object_pp=object_pp@entry=0x7fff0e0b8d10, obj_ce=, obj_ce@entry=0x301d5c8,

fn_proxy=fn_proxy@entry=0x301d720, function_name=function_name@entry=0xace193 "__call", function_name_len=function_name_len@entry=6, 
retval_ptr_ptr=retval_ptr_ptr@entry=0x7fff0e0b8d38, param_count=param_count@entry=2, arg1=arg1@entry=0x6ce3250, arg2=0x6ce3de8)
at /home/work/env/php/php-5.6.15/Zend/zend_interfaces.c:97

#19 0x000000000083504c in zend_std_call_user_call (ht=, return_value=0x6cc4150, return_value_ptr=0x7f99894c7e80,

this_ptr=0x6ce99d0, return_value_used=<optimized out>) at /home/work/env/php/php-5.6.15/Zend/zend_object_handlers.c:931

#20 0x00000000008b3f74 in zend_do_fcall_common_helper_SPEC (execute_data=)

at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:560

#21 0x0000000000844808 in execute_ex (execute_data=0x7f99894c7e98) at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:363
#22 0x00000000007ff9d3 in zend_call_function (fci=fci@entry=0x7fff0e0b9000, fci_cache=, fci_cache@entry=0x7fff0e0b8fd0)

at /home/work/env/php/php-5.6.15/Zend/zend_execute_API.c:829

#23 0x0000000000705532 in zif_call_user_func_array (ht=, return_value=0x510e8c0, return_value_ptr=,

this_ptr=<optimized out>, return_value_used=<optimized out>) at /home/work/env/php/php-5.6.15/ext/standard/basic_functions.c:4784

---Type to continue, or q to quit---
#24 0x00000000008b3f74 in zend_do_fcall_common_helper_SPEC (execute_data=)

at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:560

#25 0x0000000000844808 in execute_ex (execute_data=0x7f99894c7678) at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:363
#26 0x00000000007ff9d3 in zend_call_function (fci=fci@entry=0x7fff0e0b92c0, fci_cache=, fci_cache@entry=0x0)

at /home/work/env/php/php-5.6.15/Zend/zend_execute_API.c:829

#27 0x00000000007ffbbe in call_user_function_ex (function_table=, object_pp=object_pp@entry=0x0,

function_name=<optimized out>, retval_ptr_ptr=retval_ptr_ptr@entry=0x7fff0e0b9370, param_count=param_count@entry=4, 
params=params@entry=0x7fff0e0b9380, no_separation=no_separation@entry=0, symbol_table=symbol_table@entry=0x0)
at /home/work/env/php/php-5.6.15/Zend/zend_execute_API.c:617

#28 0x00007f997af60aaf in php_swoole_onTask (serv=0x2d1f890, req=)

at /home/work/env/php/extensions/swoole-src-git/swoole_server.c:668

#29 0x00007f997af88878 in swProcessPool_worker_loop (pool=0x7f997a31d1c0, worker=0x7f997a31ea80)

at /home/work/env/php/extensions/swoole-src-git/src/network/ProcessPool.c:327

#30 0x00007f997af891f8 in swProcessPool_spawn (worker=0x7f997a31ea80)

at /home/work/env/php/extensions/swoole-src-git/src/network/ProcessPool.c:234

#31 0x00007f997af89321 in swProcessPool_start (pool=0x7f997a31d1c0)

at /home/work/env/php/extensions/swoole-src-git/src/network/ProcessPool.c:106

#32 0x00007f997af8f290 in swManager_start (factory=factory@entry=0x2d1fdc0)

at /home/work/env/php/extensions/swoole-src-git/src/network/Manager.c:138

#33 0x00007f997af7eff4 in swFactoryProcess_start (factory=0x2d1fdc0)

at /home/work/env/php/extensions/swoole-src-git/src/factory/FactoryProcess.c:86

#34 0x00007f997af85c2d in swServer_start (serv=serv@entry=0x2d1f890) at /home/work/env/php/extensions/swoole-src-git/src/network/Server.c:586
#35 0x00007f997af635b0 in zif_swoole_server_start (ht=, return_value=0x2fd1e18, return_value_ptr=,

this_ptr=<optimized out>, return_value_used=<optimized out>) at /home/work/env/php/extensions/swoole-src-git/swoole_server.c:1997

#36 0x00000000008b3f74 in zend_do_fcall_common_helper_SPEC (execute_data=)

at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:560

#37 0x0000000000844808 in execute_ex (execute_data=0x7f99894c7410) at /home/work/env/php/php-5.6.15/Zend/zend_vm_execute.h:363
#38 0x00000000008103b0 in zend_execute_scripts (type=type@entry=8, retval=retval@entry=0x0, file_count=file_count@entry=3)

at /home/work/env/php/php-5.6.15/Zend/zend.c:1341

#39 0x00000000007ae9a2 in php_execute_script (primary_file=primary_file@entry=0x7fff0e0bdbd0)

at /home/work/env/php/php-5.6.15/main/main.c:2597

#40 0x00000000008b5f21 in do_cli (argc=6, argv=0x2a34bf0) at /home/work/env/php/php-5.6.15/sapi/cli/php_cli.c:994
#41 0x0000000000435bef in main (argc=6, argv=0x2a34bf0) at /home/work/env/php/php-5.6.15/sapi/cli/php_cli.c:1378

 Fatal error: Uncaught Error: Call to undefined method Gmagick::setImagePage() in /dev/shm/BUILD/php70-php-pecl-gmagick-2.0.1/NTS/tests/gmagick-104-setgetimagepage.php:3
 Stack trace:
 #0 {main}
   thrown in /dev/shm/BUILD/php70-php-pecl-gmagick-2.0.1/NTS/tests/gmagick-104-setgetimagepage.php on line 3

IF the method doesn"t exists the test should probably be skiped, but looking at the code, I don't understand where the GMAGICK_HAVE_SET_IMAGE_PAGE comes from.

With GraphicsMagick-1.3.23 (Fedora 23), this fonction exists

$ grep -r MagickSetImagePage /usr/include/GraphicsMagick/
/usr/include/GraphicsMagick/wand/wand_symbols.h:#define MagickSetImagePage GmMagickSetImagePage
/usr/include/GraphicsMagick/wand/magick_wand.h:  MagickSetImagePage(MagickWand *wand,

Probably detection missing in config.m4 (seems related to 79f1690)

php: symbol lookup error: /usr/local/php/lib/php/extensions/no-debug-non-zts-20131226/gmagick.so: undefined symbol: omp_get_num_procs

[work@dd ~/env/php/extensions/gmagick/gmagick-1.1.7RC3]$ php-config
Usage: /usr/local/php/bin/php-config [OPTION]
Options:
--prefix [/usr/local/php]
--includes [-I/usr/local/php/include/php -I/usr/local/php/include/php/main -I/usr/local/php/include/php/TSRM -I/usr/local/php/include/php/Zend -I/usr/local/php/include/php/ext -I/usr/local/php/include/php/ext/date/lib]
--ldflags []
--libs [-lcrypt -lz -lresolv -lcrypt -lreadline -lncurses -lrt -lmcrypt -lpng -lz -ljpeg -lcurl -lbz2 -lz -lrt -lm -ldl -lnsl -lxml2 -lz -lm -ldl -lssl -lcrypto -lcurl -lxml2 -lz -lm -ldl -lssl -lcrypto -lfreetype -lxml2 -lz -lm -ldl -lxml2 -lz -lm -ldl -lcrypt -lxml2 -lz -lm -ldl -lxml2 -lz -lm -ldl -lxml2 -lz -lm -ldl -lxml2 -lz -lm -ldl -lxml2 -lz -lm -ldl -lssl -lcrypto -lcrypt ]
--extension-dir [/usr/local/php/lib/php/extensions/no-debug-non-zts-20131226]
--include-dir [/usr/local/php/include/php]
--man-dir [/usr/local/php/php/man]
--php-binary [/usr/local/php/bin/php]
--php-sapis [ cli fpm cgi]
--configure-options [--prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc/ --with-fpm-user=www --with-fpm-group=www --enable-opcache --with-mysql=mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --enable-mysqlnd --disable-fileinfo --with-freetype-dir --with-jpeg-dir --with-png-dir --with-gd --enable-gd-native-ttf --with-zlib --with-zlib-dir --with-mcrypt --enable-shmop --enable-sockets --enable-wddx --enable-fpm --enable-mbstring --with-bz2 --enable-exif --enable-ftp --with-iconv --with-iconv-dir=/usr/local --with-libxml-dir=/usr/include/libxml2 --enable-xml --enable-bcmath --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --with-openssl --with-mhash --enable-pcntl --with-xmlrpc --with-gettext --with-readline --enable-zip --enable-soap --enable-ipv6 --enable-session]
--version [5.6.10]
--vernum [50610]

ImagickDraw provides the above function to set the alignment of text when annotating an image. Please add the same functionality to Gmagick so that images can be annotated with multiple lines of right-justified text.

A new Method (maybe unsharp or unsharpImage) to sharpen the image will be very nice:

http://www.graphicsmagick.org/GraphicsMagick.html#details-unsharp

Hi folks,
I was testing out a watermark function, and while it works great with PNG images, my SVG image is being added with a lovely white background.
Is there any way to get the Gmagick extension to properly handle SVG images and transparency?

Here is essentially my code (commented bits are things I've tried to make this work):

$image = new Gmagick( '/path/to/my-image.jpg' );
...
$watermark          = new Gmagick();
// $watermark_contents = file_get_contents( $this->watermark );
//                      $watermark->newimage( round( $this->image_width * .15 ), round( $this->image_height * .15 ), 'none', 'png' );
//                      $watermark->setimagebackgroundcolor( new GmagickPixel( 'transparent' ) );
//                              $watermark->setimagecolorspace( Gmagick::COLORSPACE_TRANSPARENT );
//              $watermark->readimageblob( $watermark_contents );
$watermark->readimage( '/path/to/my-watermark.svg );
$image->compositeimage( $watermark, 1, $pos_x, $pos_y );

Any thoughts/ideas? Is it not possible with Gmagick?
My source/test image is here: https://test.exactlywww.com/wp-content/uploads/2021/03/LB-ZCAV-1A22.jpg
SVG watermark here: https://test.exactlywww.com/wp-content/uploads/2022/08/ewwwio-logo-gray.svg (I was originally using a white version, but the gray color helps to see better what is happening.

it appears the detection I added for MagickSetImagePage doesn't actually work correctly on travis....and will need debugging.

These functions don't rely on an image wand, and so can be called statically - as can getQuantumDepth and probably others as well.

The PECL webpage https://pecl.php.net/package/gmagick has a link to the package source code which seems wrong: it points to

http://svn.php.net/pecl/gmagick

that repo seems outdated (it was last updated 3 years ago, but we have a new gmagick release which has been published 1 day ago).

Is this https://github.com/vitoc/gmagick the correct repo?

My Ubuntu 14.04 laptop has GraphicsMagick and the PHP extension (GMagick) installed. When I run the following from the command line,

gm convert -font /usr/share/fonts/truetype/google-fonts/RockSalt.ttf svg_file.svg jpeg_file.jpg

renders the JPEG with the font as desired. However, this PHP code

$gm = new Gmagick();
$draw = new GmagickDraw();
$draw->setfont("/usr/share/fonts/truetype/google-fonts/RockSalt.ttf");
$gm->readImageBlob($svg);
$gm->setImageFormat("jpeg");
$gm->drawimage($draw);
$gm->writeImage($jpgFile);
$gm->clear();
Fails to do the same and creates a JPEG with a default font. What could be the issue here?