Bug #61933 [Fbk]: realpath not resolving symlinks corrrectly

Edit report at https://bugs.php.net/bug.php?id=61933&edit=1 ID: 61933 Updated by: pajoye@php.net Reported by: david at panmedia dot co dot nz Summary: realpath not resolving symlinks corrrectly Status: Feedback Type: Bug Package: *Directory/Filesystem functions Operating System: Windows Vista/7 PHP Version: Irrelevant Block user comment: N Private report: N New Comment: I mean on linux too, is it TS or NTS? Previous Comments: ------------------------------------------------------------------------ [2012-05-03 22:58:18] david at panmedia dot co dot nz @pajoye I am using VC9 NTS version on Windows. ------------------------------------------------------------------------ [2012-05-03 22:43:36] pajoye@php.net It does work, it gives you the target of the given link. The only difference is an OS specific implementation where all links are resolved. I suppose you use a TS php on windows and a NTS on linux, right? ------------------------------------------------------------------------ [2012-05-03 21:32:36] david at panmedia dot co dot nz Description: ------------ When creating a symlink in Windows to an absolute path with a lower case drive letter, PHP will not resolve the canonicalized absolute pathname (realpath) correctly. This is obvious when you have nested symlinks. When you run realpath of a nested symlink it returns the next symlink it links to, rather than the top absolute pathname. On Linux it works correctly. One work around that can be used is: $link = 'f:\link3'; do { $link = realpath($link); } while (realpath($link) !== false && $link !== realpath($link)); Test script: --------------- Windows test: F:\>mkdir target F:\>mklink /D link1 f:\target F:\>mklink /D link2 f:\link1 F:\>mklink /D link3 f:\link2 F:\>php -r "var_dump(realpath('link3'));" Linux test: $ mkdir target $ ln -s target link1 $ ln -s link1 link2 $ ln -s link2 link3 $ php -r "var_dump(realpath('link3'));" Expected result: ---------------- Windows test: string(9) "F:\target" Linux test: string(12) "/root/target" Actual result: -------------- Windows test: string(9) "f:\\link2" Linux test: string(12) "/root/target" ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=61933&edit=1