> -----Original Message----- > From: David Harkness [mailto:david.h@xxxxxxxxxxxxxxxxx] > Sent: 06 April 2011 21:08 > To: Richard Quadling; PHP General list > Subject: Re: Ranges for case statement and a WTF moment. > > On Tue, Apr 5, 2011 at 8:28 AM, Richard Quadling > <rquadling@xxxxxxxxx>wrote: > [...] > > 10...19 > > > > What I'm not sure is why the middle empty string is output as 0. > > > > "10" . . ".19" becomes "10" . "0" . ".19" which becomes "100.19" > > > > My guess is that PHP parses this as > > 10<decimal-point> <dot-operator> <decimal-point>19 > > Because the dot operator requires strings, PHP converts both numbers > to > strings as > > '10' <dot-operator> '0.19' > > which becomes your > > 100.19 > > You can see this with > > php > echo (string) 10. > 10 > php > echo (string) .19 > 0.19 Oh, excellent deduction! I must admit, my first instinct was also that both numbers should absorb a dot if one of them did, but failed to realise that .19 would be coerced to "0.19". Just shows how you really have to think things through, sometimes! Cheers! Mike -- Mike Ford, Electronic Information Developer, Libraries and Learning Innovation, Leeds Metropolitan University, C507 City Campus, Woodhouse Lane, LEEDS, LS1 3HE, United Kingdom Email: m.ford@xxxxxxxxxxxxxx Tel: +44 113 812 4730 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
