The following script produces this error:

<b>Warning</b>:  socket_set_blocking(): supplied resource is not a valid stream resource in <b>/Users/josha/test/noblock.php</b> on line <b>10</b><br />

Even though the socket connection will work fine... I expect this to work, since $s is indeed a valid stream resource, right?

#!/usr/local/bin/php
<?php

$HOST = 'localhost';
$PORT = 4005;

# set up the server
$s = socket_create(AF_INET, SOCK_STREAM, 0);
$ret = socket_bind($s, $HOST, $PORT);
$ret = socket_set_blocking($s, false); // why is this an issue?
$ret = socket_listen($s, 1);
echo "Waiting for connection(s) on PORT $PORT...\n";

while (!$done) {
	$u = pollNewConn();
	echo "$u\n";
}

function pollNewConn() {
	global $s;

	if ($conn = socket_accept($s)) {
		return "Connected";
	} else {
		return "No connection";
	}
} 
?>