#37350 [Bgs->Opn]: realpath doesn't canonicalize drive letter case

ID: 37350 Updated by: derick@php.net Reported By: k95vz5f02 at sneakemail dot com -Status: Bogus +Status: Open Bug Type: Filesystem function related Operating System: Windows XP SP2 PHP Version: 5.1.4 New Comment: Realpath is also used internally for f.e. include_once, so this should be looked into. Previous Comments: ------------------------------------------------------------------------ [2006-05-07 18:21:43] bjori@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php strcasecmp() ------------------------------------------------------------------------ [2006-05-07 18:08:28] k95vz5f02 at sneakemail dot com Description: ------------ The realpath function doesn't canonicalize the case of the drive letter on Windows (and possibly on certain other platforms). For example: realpath('C:\WINDOWS') returns 'C:\WINDOWS' but realpath('c:\WINDOWS') returns 'c:\WINDOWS' (note the different case of the 'C:') Hence comparing realpaths cannot reliably be used to check that two files are the same on Windows. Reproduce code: --------------- echo (realpath('C:\WINDOWS')==realpath('c:\WINDOWS')) ? "true" : "false"; Expected result: ---------------- true Actual result: -------------- false ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=37350&edit=1