[wirehopper]

This loop

PHP Code:

for($i=0;$i<count($this->Orders);$i++) {

          $this->Orders[$i][0] = "";

          $this->Orders[$i][1] = "";

       } 

could be written like so:

PHP Code:

j=count($this->Orders);  // Evaluated once

for (i=0;i<j;i++)

  unset($this->Orders[$i]); 

Both approaches are valid and equivalent.