Bug #53999 [Wfx]: strcmp() doesn't always return -1, 0, or 1

Edit report at http://bugs.php.net/bug.php?id=53999&edit=1 ID: 53999 User updated by: charlie at charliesomerville dot com Reported by: charlie at charliesomerville dot com Summary: strcmp() doesn't always return -1, 0, or 1 Status: Wont fix Type: Bug Package: SPL related Operating System: Mac OS X PHP Version: Irrelevant Block user comment: N Private report: N New Comment: While I know that all the documentation promises is < 0, == 0 and > 0, as PHP is supposed to provide an OS-agnostic environment, shouldn't strcmp() return consistent values across the board? Previous Comments: ------------------------------------------------------------------------ [2011-02-12 08:32:02] kalle@php.net The documentation for strcmp() does not state it returns -1, 0 or 1: "Returns < 0 if str1 is less than str2; > 0 if str1 is greater than str2, and 0 if they are equal." The memcmp() man page also states that (which is what strcmp internally uses), so if you want the same cross platform behaviour you should alter your script to do as specified above. ------------------------------------------------------------------------ [2011-02-12 08:09:56] charlie at charliesomerville dot com Description: ------------ PHP's strcmp() return value is inconsistent across operating systems. On Windows and Linux, strcmp("foo","bar") returns 1. However, on Mac OS X, strcmp("foo","bar") returns 4. Technically, both of these return values are correct, however the 4 is inconsistent with the return values on other operating systems. Test script: --------------- <?php echo strcmp("foo","bar"); Expected result: ---------------- 1 Actual result: -------------- 4 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/bug.php?id=53999&edit=1