Is there any possibility of using the NFePHP API without the need for server to support cURL 7.22.2
? Any configuration I can perform, an alternative lib, etc?
Good afternoon, the answer is no, it does not exist.
PHP's cURL extension is used directly in accessing webservices.
In PHP version 5.3.x cURL already has the minimum version, so I believe this version 7.19.7 is PHP 5.2 or earlier.
I recommend you try another path updating the OS or migrating to an OS that has this prerequisite.
About PHP, preferably use version 5.6 above.
Hugs.