[Non-blocking sockets]

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.

[code]
        $socket = socket_create(AF_INET, SOCK_RAW, SOL_TCP);
socket_set_nonblock($socket);
socket_connect($socket,"news.csh.rit.edu",119); //ERROR OCCURS ON THIS LINE
socket_recv($socket,$buf,1024,0);
echo $buf;
[/code]

[socket_read, socket_recv]

I open a socket to a nntp server and connect. Everything works fine. I do a socket_recv or socket_read and get a line saying "200 news.rit.edu DNEWS 5.7b1, S1, posting OK". Then when I try to recv again or read again it freezes. If I add PHP_NORMAL_READ opt to socket_read it gives me "Warning: socket_read() [function.socket-read]: unable to read from socket [0]: The operation completed successfully. ". The code is below. Thanks in advance.

[code]
$socket = socket_create(AF_INET,SOCK_STREAM,SOL_TCP);
if(!$socket)
{
die("Socket Creation failed");
}
$result = socket_connect($socket,"news.rit.edu",119);
if(!$result)
{
die("Connection failed");
}
$buffer = socket_read($socket,255);
echo $buffer;
$buffer = socket_read($socket,255,PHP_NORMAL_READ);
echo $buffer;


socket_close($socket);
[/code]

[apache_child_terminate()]

When I try calling this function(As show in php.net's reference) it says "call to undefined function". Do I need to create an object of something or include library? Im new to PHP. Thanks in advance.