php - cURL error: [35] Unsupported SSL protocol version -

php - cURL error: [35] Unsupported SSL protocol version -

i have made ipn.php file paypal ipn , when tested paypal sandbox ipn simulator, errors log outputted error:

curl error: [35] unsupported ssl protocol version

is wrong php file or website host? how can prepare it?

thanks in advance

add -1 curl command forcefulness using tls , see if works.

-1, --tlsv1

(ssl) forces curl utilize tls version 1.x when negotiating remote tls server. can utilize options --tlsv1.0, --tlsv1.1, , --tlsv1.2 command tls version more exactly (if ssl backend in utilize supports such level of control).

http://curl.haxx.se/docs/manpage.html

php curl ssl paypal paypal-ipn