crypto_method: (int) A value describing the minimum TLS protocol
version to use.
This setting must be set to one of the
``STREAM_CRYPTO_METHOD_TLS*_CLIENT`` constants. PHP 7.4 or higher is
required in order to use TLS 1.3, and cURL 7.34.0 or higher is required
in order to specify a crypto method, with cURL 7.52.0 or higher being
required to use TLS 1.3.