> -----Original Message----- > From: Ben Miller [mailto:benipmiller@xxxxxxxxxxx] > Sent: 23 March 2006 15:08 > To: php-general@xxxxxxxxxxxxx > Subject: Letters in Loops > > > In trying to make an alpha list, using the following: > > for($i=A;$i<=Z;$i++) { > echo "$i"; > } > > Produces: > A > B > C... > X > Y > Z > AA > AB > AC... > AX > AY > AZ... all the way to YZ. > > > What am I doing wrong that it's not stopping at just plain > old "Z", without moving on to "AA" and continuing? Well, think about it -- you have all the evidence in front of you! If the iteration after "Z" is "AA" (which is as documented for the ++ operator on strings), when is the first time that $i<='Z' evaluates to false, and hence your loop stops? It's when it reaches "ZA", which is, not surprisingly, the iteration after "YZ". So you need it to exit when you reach the value after "Z", which you can see is "AA", thus you need to write: for($i='A'; $i!='AA'; $i++) You might also consider the use of: foreach (range('A','Z') as $i) Cheers! Mike ------------------------------------------------------------------------ ---------------- Mike Ford, Electronic Information Services Adviser, Learning Support Services, JG125, The Library, James Graham Building, Headingley Campus, Beckett Park, LEEDS, LS6 3QS, United Kingdom Tel: +44 113 283 2600 extn 4730 Fax: +44 113 283 3211 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
