Hi. The attached file has "and operator - exact words - or operator" searching options and uses "begin with" for the "and - or" options. It is currently in beta and is only available for testing with PhpDig version 1.6.5.
The attached file is used in the online
demo but is not yet included in a full release. If you want to try it, make a backup of your current search_function.php file, download the attached file, unzip it, and replace search_function.php with the unzipped file.
Anyway, let me know how it goes and what you think. Thanks.
EDIT: File removed. Download PhpDig version 1.8.0+ instead.