Changes I made to work with PHP 8

[landreww]

Around line 44, the script needed to be changed for it to work with PHP 8.3 I removed $in from the instance and the added a call to the dbf_class($in) passing the file name.

$dbf = new dbf_class(); //dbf_class is both the CLASS name and the function name.
$dbf-> dbf_class($in); // call function with the file name.