php实现ping

<?php



    //  created by joe lumbroso

    //  see some other good php3 scripts

    //  goto http://www.dtheatre.com/scripts



echo "<font color=\"red\"><blink><b>Pinging</b></blink></font>
";

$to_ping = "dtheatre.com";

$count = 3;

$psize = 65;

echo "   Please be patient, this can take a few moments...\n

";

flush();



while (1) {

?>

<pre>

<?

exec("ping -c $count -s $psize $to_ping", $list);

for ($i=0;$i < count($list);$i++) {

   print $list[$i]."\n";

}

?>

</pre>

<?

flush();

sleep(3);

}

?>