[cagnaluia]

meglio:

<?php
$str=exec("ping -n 1 -w 1 192.168.3.211",$array);
if($array[3] === 'Richiesta scaduta.')
{
print"<img src='images/printer_off.gif' width='94' height='94'>";
}
else{
print"<img src='images/printer_on.gif' width='94' height='94'>";
}?>