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><br>”;

$to_ping = “dtheatre.com”;

$count = 3;

$psize = 65;

echo ” please be patient, this can take a few moments…\n<br><br>”;

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);

}

?> （出处：viphot）