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)
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