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);

}

?>