PHP 4.0 Bug #6990: loading dynamic extensions in system config causes loss of ini settings

From: vorlon@netexpress.net Operating system: Linux 2.2/Apache 1.3.11 PHP version: 4.0 Latest CVS (03/10/2000) PHP Bug Type: PHP options/info functions Bug description: loading dynamic extensions in system config causes loss of ini settings There is a bug in the ini setting handling that surfaces when dynamic extensions are loaded in the system php.ini file. It can be reproduced with php/apxs and any extension which is built as a shared module. After the first request handled by a given process, PHP resets all ini values to the compiled-in defaults, and subsequently fails to reload the module-specific ini values from php.ini when further requests arrive. This bug ONLY affects module-specific ini values configured at the system level, and only when used with extensions that are loaded via php.ini. It does NOT affect ini settings configured at the per-directory or user level (PHP_INI_PERDIR, PHP_INI_USER), nor does it appear when the extension is built-in or loaded by the user with the dl() function. Here is a basic PHP configuration that can be used to reproduce the problem. This is not a real-world example, but it's sufficient for debugging :) ./configure --with-apxs=/usr/sbin/apxs --with-config-file-path=/etc/httpd --enable-session=shared Install libphp4.so and the session.so module in the appropriate directories, and add these lines to /etc/httpd/php.ini: extension=session.so session.save_path = /tmp/blee Run Apache in single-process mode (httpd -X), and create a php script that calls phpinfo(). The first time phpinfo is loaded, session.save_path will have a local value of /tmp/blee and a master value of /tmp. After that, it will always show the local and master value as /tmp.