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Non-blocking sockets

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Can someone show me an example of how to create a non-blocking socket for a SOCKET_STREAM over tcp. When I use the following code I get "A non-blocking operation could not be completed immediately." error. Thank in advance.

        $socket = socket_create(AF_INET, SOCK_RAW, SOL_TCP);
socket_connect($socket,"news.csh.rit.edu",119); //ERROR OCCURS ON THIS LINE
echo $buf;

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