[Xapian-discuss] Sorting by value - direction

[Andrew Betts]

> Passing one argument to set_sort_by_value() is deprecated (and you'll
> get a warning with the C++ headers if your compiler supports that, but
> sadly that's not wired up to give a PHP warning).

Re-reading the docs, this is of course documented exactly as you described - there is no one-argument form.  Sorry for not paying close enough attention to the docs, and thanks, that indeed fixes my problem.