Red de dependencias - Ingresar red

if ($_SESSION["nodos"]) {

$NODOS=$_SESSION["nodos"];
 $SALIENTES=$_SESSION["salientes"];
 $METRICAS=$_SESSION["metricas"];
 $NL=$_SESSION["nl"];
 $PR=$_SESSION["pr"];

echo "<REDDEP>\n";
 foreach($NODOS as $nodid => $nodnom) {

echo "   <WS id=\"$nodid\" nom=\"$nodnom\" >\n";

$SAL = $SALIENTES[$nodid];
 $MET = $METRICAS[$nodid];
 
 if ($MET) {
  foreach($MET as $met => $val) {
   if ($met == "Salientes")
    continue;
   if ($met == "Entrantes")
    continue;
   echo "      <MED nom=\"$met\" val=\"$val\" />\n";
  }
 }

if ($SAL) {
  foreach($SAL as $dep) {
   $spr="";
   $snl="";
   $pr=$PR[$nodid][$dep];
   $nl=$NL[$nodid][$dep];
   if ($pr!=1) $spr="pr=\"$pr\"";
   if ($nl!=$pr) $snl="nl=\"$nl\"";
   echo "      <DEP id=\"$dep\" $spr $snl/>\n";
  }
 }

echo "   </WS>\n";
 }

echo "</REDDEP>\n";

} else {

}