#33610 [Opn->Bgs]: stat cache can cause problems after changing directory

ID: 33610 Updated by: tony2001@php.net Reported By: steve at nexusuk dot org -Status: Open +Status: Bogus Bug Type: Filesystem function related Operating System: Linux (Fedora Core 4) PHP Version: 5.0.4 New Comment: 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 Use clearstatcache(). Previous Comments: ------------------------------------------------------------------------ [2005-07-07 23:07:37] steve at nexusuk dot org Description: ------------ If you use relative path names and change the working directory then the cached data may point at the wrong file. Reproduce code: --------------- $a = file_exists('foo.txt'); chdir('bar'); $b = file_exists('foo.txt'); Expected result: ---------------- The second file_exists() call should check the file exists since it is not the same file as the original call. The stat cache should probably reference files by their absolute path names, or chdir() should clear the stat cache to ensure this doesn't happen. Actual result: -------------- If 'foo.txt' existed when checked the first time then the second file_exists() call will also return true, even if 'bar/foo.txt' doesn't exist. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=33610&edit=1