Re: Re: Bug #51739 tricky string to float conversion

Am Mittwoch, 31. August 2011, 20:48:37 schrieb Shawn McKenzie: > On 08/31/2011 09:03 AM, magic-php@damage.devloop.de wrote: > > Hi, > > I have opend Bug #51739 in 2010. It was closed as bogus before my last > > question was answered. It would be fine to know what you think about > > that bug. > > In short: > > var_dump((float)"8315e839da08e2a7afe6dd12ec58245d"); > > results in float(INF) > > This is because "8315" is treated as base and > > "e839da08e2a7afe6dd12ec58245d" is treated as an exponent. My hint that > > "e839da08e2a7afe6dd12ec58245d" is not a valid exponent was not answered. > > What do you think about? > > cheers > > Daniel > > The cast to float is truncating the invalid characters and since your > string contains a float that is INF (8315e839) before the truncation at > the "d", then it returns INF. Makes perfect sense. This is what drives me crazy. If I use a string in PHP I don't want PHP to cut this string. Either it uses this string as it is or it gives me an error/warning/false (what ever...). But silently(!!!) using a small piece of a string is not understandable. cheers Daniel