php - socket connection between c server and PHP client

Question

I trying to establish a socket communication from PHP client to C target, But I am always getting warning error as below:

Warning: socket_connect(): unable to connect [10061]: No connection could be made because the target machine actively refused it.

Note: I am already tried the links:

http://www.pmoghadam.com/homepage/HTML/c-php-unix-domain-socket.html

socket_connect(): unable to connect [10061] - target machine actively refused it