Re: [RFC] Safe Casting Functions

On Mon, 20 Oct 2014, Andrea Faulds wrote: > Good evening, > > I am presenting a new RFC to add a set of three functions to do validated casts for scalar > types: > > https://wiki.php.net/rfc/safe_cast > > Please read it. > > The functions return FALSE on failure instead of NULL because: > > - If strict type hinting were added, they would fail for a nullable > > typehint > > - FALSE is a traditional error value in PHP > > - NULL is used to signify the absence of a value - but what we want to > > signify is an invalid value (similar to 0 vs NaN) But what about if we also would like a to_bool, which would accept "true", "false", "0", "1", true, false, 1 and 0? Then to_bool() whould return false... or true? So hence, it should be NULL, and that would also be consistent with ext/filter. cheers, Derick