CURLOPT_ABSTRACT_UNIX_SOCKET

CURLOPT_ABSTRACT_UNIX_SOCKET is one of the accepted parameters for curl_setopt parameter #2.

CURLOPT_ABSTRACT_UNIX_SOCKET — Enables the use of an abstract Unix domain socket instead of establishing a TCP connection to a host and sets the path to the given string. This option shares the same semantics as CURLOPT_UNIX_SOCKET_PATH. These two options share the same storage and therefore only one of them can be set per handle. Available as of PHP 7.3.0 and cURL 7.53.0

CURLOPT_ABSTRACT_UNIX_SOCKET = 10264;