Hi Andrea, I need some education. Can you elaborate on the specific situations where integer division would be used without other functions from bcmath or gmp?
I see in the RFC you mention seconds to hh:mm and index to rows/cols, but can you give some actual "before" and "after" samples? Like this is how it would be done today without intdiv, and here's how it would be done after? Regards, bishop On Jul 14, 2014 8:15 PM, "Andrea Faulds" <a...@ajf.me> wrote: > Good evening again, > > PHP currently lacks a way to do integer division. You can floor or int > cast a floating-point division, but beyond 53-bits that produces the wrong > result: > > $ sapi/cli/php -r 'var_dump((int)(PHP_INT_MAX / 3));' > int(3074457345618258432) > > Furthermore, using a floating-point division isn’t really a proper way to > do it; it’s a workaround for a lack of language support for a quite basic > operation. This RFC proposes a function for integer division, intdiv(). It > would work properly with 64-bit values: > > $ sapi/cli/php -r 'var_dump(intdiv(PHP_INT_MAX, 3));' > int(3074457345618258602) > > It works exactly as you’d expect it to. If you divide by zero, it does > exactly the same thing the division operator does (E_WARNING and returns > FALSE). > > While this is simple enough, I’m also considering possibly shortening it > to div() (more likely to cause conflicts, but easier to type), implementing > it as an internal function (à la pow()), and perhaps implementing it as an > infix operator (3 div 2 === 1). > > The RFC is here: https://wiki.php.net/rfc/intdiv > > It elaborates a little more, so I’d suggest reading it first. What are > your thoughts? I think this is a simple and obvious addition. > > Thanks! > -- > Andrea Faulds > http://ajf.me/ > > > > > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > >
