cURL VS. file_get_contets()

In my research for a WooCommerce integration with Billy's Billing, a question popped up in my head:

Which method is fastest, file_get_contents or cURL?

After some further investigation, I came across this post: which is linking to this answer:

According to the answer, cURL should be 3-10 times faster than file_get_contents(). So even though the file_get_contents() gives a much cleaner and prettier code, what happens behind the scene is more complex. So using cURL should be the best solution to the most problems.'

Martin Schadegg Rasch Jensen