#30732 [NEW]: Wrong loop handling when using chars instead of integers

From: thomas dot keller at inatec dot com Operating system: Linux Mandrake 8, Linux 2.4.3 PHP version: 4.3.9 PHP Bug Type: Scripting Engine problem Bug description: Wrong loop handling when using chars instead of integers Description: ------------ Configure command: './configure' '--prefix=/usr/local/php' '--with-apxs2=/home/apache2/apache-2.0.52/bin/apxs' '--enable-versioning' '--with-mysql=/usr/local/mysql' '--with-gd' '--with-zlib' I use the following code snippet to print out an array of chars in alphabetic order. If I have the condition $i < 'Z' (so only until 'Y'), everything works fine, for the condition(s) $i <= 'Z' or $i < ('A' + 26) PHP produces wrong results. I could reproduce the error on a Redhat 9 system with PHP 4.3.4. Reproduce code: --------------- $letters = array(); for ($i='A'; $i<='Z'; $i++) print $i; Expected result: ---------------- ABCDEFGHIJKLMNOPQRSTUVWXYZ (26 ^ 1 letters) Actual result: -------------- ABCDEFGHIJKLMNOPQRSTUVWXYZAAABAC .. YZ (26 ^ 2 letters) -- Edit bug report at http://bugs.php.net/?id=30732&edit=1 -- Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=30732&r=trysnapshot4 Try a CVS snapshot (php5.0): http://bugs.php.net/fix.php?id=30732&r=trysnapshot50 Try a CVS snapshot (php5.1): http://bugs.php.net/fix.php?id=30732&r=trysnapshot51 Fixed in CVS: http://bugs.php.net/fix.php?id=30732&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=30732&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=30732&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=30732&r=needscript Try newer version: http://bugs.php.net/fix.php?id=30732&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=30732&r=support Expected behavior: http://bugs.php.net/fix.php?id=30732&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=30732&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=30732&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=30732&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=30732&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=30732&r=dst IIS Stability: http://bugs.php.net/fix.php?id=30732&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=30732&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=30732&r=float MySQL Configuration Error: http://bugs.php.net/fix.php?id=30732&r=mysqlcfg