Cálculando a rede e convertendo decimal p/Binário

Anderson Guimarães · April 17, 2012

Calcula rede

<?php
//$ip_inf   = $_POST["ip_inf"];//variavel recebe o IP de outra pagina...
//$mask_inf = $_POST["mask_inf"];//variavel recebe a máscara de outra pagina...

$ip_inf      = "192.168.1.33";
$mask_inf = "255.255.255.128";
$rede_inf = "0.0.0.0";

$IP_D   = explode(".", $ip_inf); //Matriz de 4 que contem os valores decimais dos octetos...
$MASC_D = explode(".", $mask_inf);
$REDE_D = explode(".", $rede_inf);
$contMASK_decimal = 0;
for($i=0; $i<4; $i++) //for 1
  {
   if ($i != 0)
     {
      $IPconvertido = $IPconvertido.".";
      $maskconvertido = $maskconvertido.".";
     }
   $contMASK[$i] = 0;
   $Aux_IP_D   = $IP_D[$i];
   $Aux_MASC_D = $MASC_D[$i];
       for ($l=7; $l>-1; $l--)  //for 2
       {
        $oct_ip_BIN[$l] = $Aux_IP_D%2;
        $Aux_IP_D       = floor($Aux_IP_D/2);
        $oct_ma_BIN[$l] = $Aux_MASC_D%2;
        
           if ($oct_ma_BIN[$l] == "1")
             {
               $contMASK_decimal = $contMASK_decimal + 1;
               $contMASK[$i]     = $contMASK[$i] + 1;
             }
        
        $Aux_MASC_D     = floor($Aux_MASC_D/2);
        $oct_re_BIN[$l] = ($oct_ip_BIN[$l]*$oct_ma_BIN[$l]);
         switch ($l)
           {
             case 0:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*128));
                 break;
             case 1:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*64));
                 break;
             case 2:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*32));
                 break;
             case 3:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*16));
                 break;
             case 4:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*8));
                 break;
             case 5:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*4));
                 break;
             case 6:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*2));
                 break;
             case 7:
                 $REDE_D[$i] = (($REDE_D[$i])+($oct_re_BIN[$l]*1));
                 break;
           }//fim do switch case 1
       }//fim do for 2
       //FOR para imprimir os octeto convertido
        for ($x=0; $x<8; $x++)  //for 2
         {
           $IPconvertido   = $IPconvertido.$oct_ip_BIN[$x];
           $maskconvertido = $maskconvertido.$oct_ma_BIN[$x];
         }    
       
       
  }//fim do for 1
echo "<HTML><HEAD><TITLE>Calculo de rede</TITLE></HEAD>";
echo "<br><h2><p align='center'>:: Resultado do Cálculo de Rede ::</p></h2><br>";

$hosts       = pow(2, (32-$contMASK_decimal));
$hostsv      = $hosts - 2;

if ($contMASK_decimal > 23)
  {
    $broadcast = $REDE_D[3] + $hosts - 1;
  }

if ($contMASK_decimal > 23)
  {
    $broadcast = $REDE_D[3] + $hosts - 1;
    $broadcast = $REDE_D[0].".".$REDE_D[1].".".$REDE_D[2].".".$broadcast;
    $ipfinal   = $REDE_D[3] + $hosts - 2;
    $ipfinal   = $REDE_D[0].".".$REDE_D[1].".".$REDE_D[2].".".$ipfinal;
  }

if ($contMASK_decimal > 15 and $contMASK_decimal < 24)
  {
    $tempaux   = 24 - $contMASK_decimal;
    $tempaux   = ((($REDE_D[2]) + (pow(2, $tempaux))) - 1);
    $broadcast = $REDE_D[0].".".$REDE_D[1].".".$tempaux.".255";
    $ipfinal   = $REDE_D[0].".".$REDE_D[1].".".$tempaux.".254";
  }

if ($contMASK_decimal > 7 and $contMASK_decimal < 16)
  {
    $tempaux   = 16 - $contMASK_decimal;
    $tempaux   = ((($REDE_D[1]) + (pow(2, $tempaux))) - 1);
    $broadcast = $REDE_D[0].".".$tempaux.".255.255";
    $ipfinal   = $REDE_D[0].".".$tempaux.".255.254";
  }

if ($contMASK_decimal > 1 and $contMASK_decimal < 8)
  {
    $tempaux   = 8 - $contMASK_decimal;
    $tempaux   = ((($REDE_D[0]) + (pow(2, $tempaux))) - 1);
    $broadcast = $tempaux.".255.255.255";
    $ipfinal   = $tempaux.".255.255.254";
  }

$ipinicial = $REDE_D[3] + 1;
$ipinicial = $REDE_D[0].".".$REDE_D[1].".".$REDE_D[2].".".$ipinicial;
echo "<table border='0' width='50%'>";
echo "<tr>";
echo "<td><b>IP Informado:</b></td>";
echo "<td>$ip_inf</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>Máscara Informada:</b></td>";
echo "<td>$mask_inf   =   / $contMASK_decimal</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>IP Binário:</b></td>";
echo "<td>$IPconvertido</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>Máscara Binária:</b></td>";
echo "<td>$maskconvertido</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>Rede:</b></td>";
echo "<td>$REDE_D[0].$REDE_D[1].$REDE_D[2].$REDE_D[3]</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>N. de Hosts:</b></td>";
echo "<td>$hosts</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>Hosts Válidos:</b></td>";
echo "<td>$hostsv</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>IP inicial:</b></td>";
echo "<td>$ipinicial</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>IP Final:</b></td>";
echo "<td>$ipfinal</td>";
echo "</tr>";
echo "<tr>";
echo "<td><b>Broadcast:</b></td>";
echo "<td>$broadcast</td>";
echo "</tr>";
echo "</table>";
?>

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Cálculando a rede e convertendo decimal p/Binário

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Anderson Guimarães

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