Fann þennan kóða. Þetta er frekar slow og dirty leið en here goes.

function isalive($host)
{
if (eregi(“Windows”, getenv(“OS”))) {
/* Windows ping: first line from output is empty if sucessful */
exec(“ping -n 1 ”.$host, $a);
return (($a[0] == “”)?1:0);
}
else {
/* POSIX ping: always returns 0 if sucesful */
exec(“ping -c 1 ”.$host, $a, $sysret);
return ((sysret == 0)?1:0);
}
}

/* test the function */
echo “”;
echo “foo.bar.net : ”.isalive(“foo.bar.net”);
echo “osnippets.org : ”.isalive(“osnippets.org”);
echo “www.domain.duh : ”.isalive(“www.domain.duh”);
echo “www.google.com : ”.isalive(“www.google.com”);
echo “www.php.net : ”.isalive(“www.php.net”);
echo “”;
<br><br><b>——————————
Jón Grétar Borgþórsson
<a href="http://www.jongretar.com/">http://www.jongretar.com/</a></

á að packeta einhvern ;)