&reftitle.setup;
&reftitle.required;
If you have the GD library (available at &url.gd;) you will also be able to create
and manipulate images.
The format of images you are able to manipulate depend on the
version of GD you install, and any other libraries
GD might need to access those image formats.
libgd-2.1.0 or higher is required. Alternatively, use
the bundled GD library that ships with PHP.
The GD library requires zlib >= 1.2.0.4.
You may wish to enhance GD to handle more image formats.
Supported image formatsImage formatLibrary to downloadNotesgifavifjpeg&url.jpeg;
When building the jpeg library (prior to building PHP) you
must use the
option in the configure step. If you do not, you will receive
an error saying libjpeg.(a|so) not found
when you get to the configure step of building PHP.
png&url.libpng;xpm&url.libxpm;
It's likely you have this library already available, if your system
has an installed X-Environment.
webp
You may wish to enhance GD to deal with different fonts.
The FreeType 2 library is supported.
&reference.image.configure;
&reference.image.ini;
&reftitle.resources;
This extension defines the following resource types:
List of resource types in GDNameDescriptionNotesgdImage resource, used by functions like imagecreatefrompngPrior to PHP 8.0.0gd fontFont resource internally created by imageloadfontPrior to PHP 8.1.0