3 possible variables - But what if no data in any of them?

sgtpepper

I have data that can come from three possible variables. I am calling them like this.

<?
print strtolower($electampvar1);
print strtolower($electampvar2);
print strtolower($electampvar3);
?>

What if no data is available in any of the three? I think I need to use a else statement....how can I code it so that if no data is given from any of the three varables is says 'None available'.

sachindesarda

<?
if(isset($electampvar1))
{
print strtolower($electampvar1);
}
else if(isset($electampvar2))
{
print strtolower($electampvar2);
}
else if
{
print strtolower($electampvar3);
}
else
{
print "Nothing is set ";
}
?>

stolzyboy

if($electampvar1 == "" && $electampvar2 == "" && $electampvar3 == "")
{
echo "No Data Available";
}
else
{
echo $electampvar1;
echo $electampvar2;
echo $electampvar3;
}
?>

DeltaRho2K

There are a couple of error checking things you need to do in this case, which combines both of these solutions:

<?
// First, check to see if the variables even exist.

If ((!isset($electampvar1)) && (!isset($electampvar2)) && (!isset($electampvar2))):
echo "One or all of these variables don't exist";

// If the variables do exist, then we need to check to make sure they have values associated with them.

Else:
   if($electampvar1 == ""):
      echo "This value is empty";
   else:
      echo $electampvar1; 
   endif;

   if($electampvar2 == ""):
      echo "This value is empty";
   else:
      echo $electampvar2; 
   endif;

   if($electampvar3 == ""):
      echo "This value is empty";
   else:
      echo $electampvar3; 
   endif;

Endif;

?>

I would do it this way, because this provides an OR factor to verify each of the 3 variables...