Heroku - how to enable gd on heroku php application?

Question

Heroku said:

The following built-in extensions have been built “shared” and can be enabled through composer.json (internal identifier names given in parentheses):

But it doesn't give an example, I tried with the following composer.json: { "require": { "gd": "*" } }

But when I git push heroku master, I get:

My composer.json: { "require": { "gd": "*" } }

But when I git push heroku master, I get:

-----> Installing dependencies...        Composer version 1.0.0-alpha9-19-g10401d5 2014-12-09 11:32:02        Loading composer repositories with package information        Installing dependencies        Your requirements could not be resolved to an installable set of packages.           Problem 1            - The requested package gd could not be found in any version, there may be a typo     in the package name.         Potential causes:         - A typo in the package name         - The package is not available in a stable-enough version according to your minimum-    stability setting           see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.         Read <http://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.   !     Push rejected, failed to compile PHP app 

How can I enable gd on heroku???

Answer 1

Try it with:

{     "require": {         "ext-gd": "*"     } } 

see here using-optional-extensions

Answer 2

Just adding GD as dependency (require) in composer does not load the extension GD. It just tells that this package needs gd enabled. "ext-gd" is just a virtual package, not existing for real.

you have to install it on your platform.

see here composer - platform-packages