From: rschwartz at ec dot rr dot com
Operating system: Any
PHP version: 4.3.4
PHP Bug Type: Scripting Engine problem
Bug description: Comparison Operators not working with alpha characters
Description:
------------
I was testing a for loop with incrementing alpha characters. For example,
looping through a-z and printing those characters. It does not seem to
work as expected.
Reproduce code:
---------------
Ex 1:
for ($i = 'a'; $i <= 'z'; $i++) {
echo $i;
}
Ex 2:
for ($i = 'a'; $i < 'z'; $i++) {
echo $i;
}
Ex 3:
for ($i = 'a'; $i < 'aa'; $i++) {
echo $i;
}
Expected result:
----------------
Ex 1: Print a-z.
Ex 2: Print a-y.
Ex 3: Print a-z.
Actual result:
--------------
Ex1 loops through to 'yz' and does not work as expected.
Ex2 loops through to 'z', which is expected.
Ex3 dies after the first iteration and only prints 'a'.
I think this is an odd behavior. The < operator works as expected in this
example but the <= operator does not. It doesn't seem like a consistent
behavior. If I can remember correctly, I was able to get this to work on
an earlier version sometime ago.
--
Edit bug report at http://bugs.php.net/?id=26914&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=26914&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=26914&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=26914&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=26914&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=26914&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=26914&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=26914&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=26914&r=support
Expected behavior: http://bugs.php.net/fix.php?id=26914&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=26914&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=26914&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=26914&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=26914&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=26914&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=26914&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=26914&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=26914&r=float
