I\'m trying to install Facebook PHP SDK with Composer. This is what I get
$ composer install
Loading composer repositories with package information
Installin
I have Archlinux with php 7.2, which has Curl integrated, so no amount of configuration voodoo would make Composer see ext-curl, that PHP could see and work with happily. Work around is to use Composer with --ignore-platform-reqs.
eg composer update --ignore-platform-reqs
Reference = https://github.com/composer/composer/issues/1426