Amazon S3 on PHP GAE not working with curl extension

Question

Could anyone help me figure out how to get S3 working on my php app engine (runtime: php55)?

I saw somewhere that you can use it without CURL and found t

Answer 1

curl requires sockets which are only available to bill enabled apps (https://cloud.google.com/appengine/docs/php/sockets/). You may wish to also consider "curl lite": https://cloud.google.com/appengine/docs/php/config/php_ini#GAE_directives