Bug #75287 [Com]: Builtin webserver crash after chdir in a shutdown function

Edit report at https://bugs.php.net/bug.php?id=75287&edit=1 ID: 75287 Comment by: weirdan at gmail dot com Reported by: manuele dot menozzi at gmail dot com Summary: Builtin webserver crash after chdir in a shutdown function Status: Closed Type: Bug Package: Built-in web server Operating System: macOS / Linux Debian PHP Version: 7.0.24 Block user comment: N Private report: N New Comment: This not just fixed that bug, but also changed the way relative path to the router script is treated. Previously it assumed the path to be relative to $CWD, now it's relative to document root (set with the -t option). It caused (easily fixed) breaks for scripts that were starting CLI server like this: php -S 0.0.0.0:8888 -t public public/index.php. Now they fail with: PHP Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0 PHP Fatal error: Unknown: Failed opening required '<path to>/public/public/index.php' (note the duplicate 'public/public'). The fix is to start CLI server like this (router path is relative to doc root): php -S 0.0.0.0:8888 -t public index.php Previous Comments: ------------------------------------------------------------------------ [2017-10-15 02:30:06] laruence@php.net Automatic comment on behalf of laruence@gmail.com Revision: http://git.php.net/?p=php-src.git;a=commit;h=816758eda2bcdd69ba505fb6bbb79124a7bf2254 Log: Fixed bug #75287 (Builtin webserver crash after chdir in a shutdown function) ------------------------------------------------------------------------ [2017-09-29 17:20:31] manuele dot menozzi at gmail dot com Description: ------------ Hi, PHP's built-in webserver crashes if it's started with a router script with relative path and in a shutdown function there is a chdir to a different directory than one where the router script is. Test script: --------------- Create the file /home/user/router.php with the following content <?php function shutdownWithChdir() { chdir('/tmp'); } register_shutdown_function('shutdownWithChdir'); echo 'Hello World'; ?> Now in your terminal: $ cd /home/user $ php -S localhost:3000 router.php Now perform the first request to the webserver and see that correctly returns "Hello World". Then perform a second request. Expected result: ---------------- You would expect to get "Hello World" even for the second request. Actual result: -------------- Instead you get: Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0 Fatal error: Unknown: Failed opening required 'router.php' (include_path='.:') in Unknown on line 0 For every subsequent request. If you restart the webserver you'll get the same result: first request ok, subsequent requests error. This happens only if the chdir is done inside a "shutdown function" not if it's done in the "normal" script execution. I can confirm this bug on PHP 5.6, 7.0 and 7.1 (I do not remember the exact versions numbers) and I don't think it's related to the #74496. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=75287&edit=1