Call to undefined function Gumlet\imagecreatefromjpeg()

[Script47]

I'm using this library (1.9.*) in Laravel (v6) and getting the following exception:

Call to undefined function Gumlet\imagecreatefromjpeg()

when running the following line of code:

$imgObj = ImageResize::createFromString($var);

The trace narrows it down to ImageResize.php:170, which is:

$img = imagecreatefromjpeg($filename);

If I run php -m the output is:

$ php -m
[PHP Modules]
bz2
calendar
Core
ctype
curl
date
dom
exif
fileinfo
filter
ftp
gd
gettext
hash
iconv
json
libxml
mbstring
mysqli
mysqlnd
openssl
pcntl
pcre
PDO
pdo_mysql
pdo_sqlite
Phar
readline
Reflection
session
SimpleXML
sockets
SPL
sqlite3
standard
tokenizer
wddx
xml
xmlreader
xmlwriter
xsl
zlib

[Zend Modules]

The only thing I can think of is that it's trying to find that method in Gumlet\imagecreatefromjpeg() instead of global PHP namespace.

Thoughts?

[peter279k]

We can use the $img = \imagecreatefromjpeg($filename); and it will fix this issue.

The reason is about namespace checking on PHP runtime.

[Script47]

@peter279k

One thing that remains unclear to me is how this isn't affecting everyone?

Also, out of curiosity when do you think this'll be patched?

[peter279k]

Well, it's about the internal PHP version problem.

It will happen on some PHP versions and other will not. I also get this problem on some PHP versions.

[FuTuL]

It might be a little late. This usually happens if the gd is configured without jpeg support. You can view the options here (https://www.php.net/manual/en/image.installation.php). For example, in a docker you need to execute docker-php-ext-configure gd --with-jpeg.

[Sergeyii]

Try to use \imagecreatefromjpeg from global PHP namespace - outputs error "attempted to call function imagecreatefromjpeg from global namespace".

In my case the problem was solved in docker PHP 7.4-fpm by adding line before install: docker-php-ext-configure gd --with-jpeg &&
docker-php-ext-install gd \

[romanzaycev]

I use Docker image php:8.0-fpm

To solve the problem, I used the following instructions in the dockerfile for JPEG and WebP images:

RUN apt-get update --allow-releaseinfo-change && apt-get install -y zlib1g-dev libjpeg-dev libwebp-dev
RUN docker-php-ext-configure gd --with-jpeg --with-webp && docker-php-ext-install gd