<?php$host= 'www.google.c0m'; $cmd = "ping $host"; $output = shell_exec($cmd); $error= "no pudo"; if (stristr($output,$error)){ echo '<font color=red><h1>El host ' . $host .' NO responde a ping </h1></font>'; } else { echo '<font color=green><h1>El host ' . $host .' SI responde a ping </h1></font>'; } ?>
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