Wordpress Custom Fields Search Plugin Mod

Estimated duration: not set
Description: Hi,

I'm looking for an experienced Wordpress developer to amend an existing Wordpress plugin (Wordpress Custom Fields Search) to search multiple custom fields and taxonomies using AND but where the custom field has multiple checkboxes selected, to use OR within that custom field's search element.

Currently, the plugin uses AND at all times, but the change to OR is NOT as simple as it sounds, as it only kicks in where multiple checkboxes for a single custom field have been selected.

I have tried to explain further in the attachment.

This is a complicated change - please only apply if you are confident of a fix.

Thanks!