Código PHP:
  
    <?php                            
        flush();
        $cmd = sprintf("./ping.sh %s", $host);
        exec($cmd, $command_output);        
    ?>
        <script type="text/javascript">
           document.getElementById("<?=$unique_id_loop?>").style.display = 'none';                
           </script>
    <?
        foreach($command_output as $r)
        {                        
             if( strstr($r, 'packets transmitted') == TRUE )
                {
                    if( strstr($r, '0 received') == TRUE )
                        {
    ?>
        <td style="border:1px solid black; background-color:red;">
         <p>no responde</p>    
        <td>
        <?php
        }
        else
        {
        ?>
        <td style="border:1px solid black; Background-color:green;">
        <p>responde</p>    
        <td>
        <?php
            }                            
         }
}
        $command_output = "";
    ?>    Les re agradezco su respuesta!
 
 

