checking a remote port

[Anon]

ok, i know there is a topic like this, but it isnt..
first i have a ping function, to chek an ip
then, if its online, i need to chek a port...
i know there are security issues in doing so
but i have to try first, and i dont think it protected since it isnt a web server or anything like it...
any help? ive tried getservbyport() bit it get the local port

[van__]

<?
if (!fsockopen ("255.255.255.0", 1337, &$errno, &$errstr, 30)) {
echo "<p>error num: ".$errno."</p>".$errstr;
} else {
//do something here...
}
?>

[Anon]

<?PHP
$ip=gethostbyname($host);
$result=ping -n 1 -l 1 $ip;
$a = strpos ($result, "ms");
if (!$a) {
echo "Offline";
} else {
echo "Online<br>Port status: ";
if (!fsockopen ($host, 27015, &$errno, &$errstr, 30)) {
echo $errno." (".$errstr.")";
} else {
echo "Online";
}
}
?>

it doesnt work.. i try a web server ips, and with port 80 and it returns online
but i try an ip which i am 100% SURE that port is open and i get 9 (Bad file descriptor) .... (im talking bout port 27015)