Re: Letters in Loops

Ben Miller wrote:

In trying to make an alpha list, using the following: for($i=A;$i<=Z;$i++) {

^ not a string technically! see what happens when you turn up error reporting to full (E_ALL).

echo "$i"; }

rather than using a loop to generate (as others have shown you), try this way instead: <?php // get the alphabet... $letters = range("A", "Z"); // dump it to 'screen' echo join(",", $letters); ?> which will output: A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z

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?

it's down to a lack of understanding about the way php autocasts stuff .... maybe this output will help you to understand it: $> php -r ' var_dump( (Z <= Z), ("Z" <= "Z"), ord("Z"), ord("AA"), (Z <= 90), ("Z" <= 90), (AA <= Z), ("AA" <= "Z"));' bool(true) bool(true) int(90) int(65) bool(true) bool(true) bool(true) bool(true)