Re: When is "z" != "z" ?

>Tedd, > >The discussion of PHP strings has been interesting; thanks for sparking that. > >Of course, your subject line to the contrary, it's not that "z" != "z", >it's that storing an alphabetic character assumed to be a single byte in a variable and then >incrementing it can result in a two-byte result. I find it plausible that the statement $a = >"a" produces a two-byte result in the first place, we just don't notice it because >the second byte is turned sideways and is very, very skinny. > >I assume you know (but I'll state it anyway for the record) that to avoid the problems >you've encountered by trying to treat apparently multi-byte PHP string variables like one-byte >numerics, you can simply use numerics themselves: > > for ($i = ord("a"); $i <= ord("z"); $i++) > { > echo chr($i); > } > >ord() and chr() being the PHP functions to yield the numeric value of a character and the ASCII >character of a numeric value: >http://php.net/ord & >http://php.net/chr > >To save that hard-working server a few machine cycles, one would presumably store >ord("z") in a variable before the loop began and test for that each iteration. > >Warm regards, >Paul Paul: And I thank you for your reply -- you've been much kinder than most (on and off-list). :-) True the subject line was a bit misleading, but that was intentional. Bait causes more fish to rise. I've received the answer several times over since I posted the problem, but I wasn't looking for a solution because I already had one. What I was looking for was an explanation, which I "got". I hope the answer remains with me longer than the bandages do. Asking questions in this group is like trying to feed alligators while being waist-deep in the swamp. :-) Thanks. tedd -- ------------------------------------------------------------------------------------ http://sperling.com http://ancientstones.com http://earthstones.com