>>Good afternoon. I'm having trouble getting PHP to loop from A
>>through Z. Here is what I tried, coming from a C background:
>>
>>for ($l = "A"; $l <= "Z"; $l++)
>> echo $l;
>>
>>// Returns A, B, C, ..., X, Y, Z, AA, AB, AC, AD, AE, ... YX, YY, YZ.
(26 * 26 results!)
>>
>>Interestingly, if I make it a "less than" operation instead of "less
than or equal to", it works correctly (except for the Z):
>>
>>for ($l = "A"; $l < "Z"; $l++)
>> echo $l;
>>
>>// Returns A, B, C, ..., W, X, Y (25 results)
>>
>>Anyone know why PHP would do that?
>>
>>Richard
>
>From the PHP docs:
PHP follows Perl's convention when dealing with arithmetic operations on
character variables and not C's. For example, in Perl 'Z'+1 turns into
'AA', while in C 'Z'+1 turns into '[' ( ord('Z') == 90, ord('[') == 91 ).
Note that character variables can be incremented but not decremented.
-Jim
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