[PHP] Why doesnt pass-by-value work?

[Andrew Halliday]

When I call this function:

   function getColumnName($col)
   {
      if ($col > 0 && $col < pg_numfields($this->lastResultSet))
         return pg_fieldname($this->lastResultSet,$col);
      else
         return null;
   }


It returns null all the time !
The condition is NOT the problem ... Ive tested that with:

   function getColumnName($col)
   {
         return pg_fieldname($this->lastResultSet,$col);
      if ($col > 0 && $col < pg_numfields($this->lastResultSet))
         return pg_fieldname($this->lastResultSet,$col);
      else
         return null;
   }

And it still returns null.

If I do this:

   function getColumnName($col)
   {
         echo pg_fieldname($this->lastResultSet,$col);
         return pg_fieldname($this->lastResultSet,$col);
      if ($col > 0 && $col < pg_numfields($this->lastResultSet))
         return pg_fieldname($this->lastResultSet,$col);
      else
         return null;
   }

I do get the correct result printed to the browser ...
So what the HELL is going on?   Dont tell me that pass by reference doesnt
work with pg_* functions?
Just to test this, I did this:

   function getColumnName($col)
   {
         $test = pg_fieldname($this->lastResultSet,$col);
         return $test;
      if ($col > 0 && $col < pg_numfields($this->lastResultSet))
         return pg_fieldname($this->lastResultSet,$col);
      else
         return null;
   }


This made no difference ... WHAT AM I DOING WRONG?!

AndrewH


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