&reftitle.install; By using the --with-mysql[=DIR] configuration option you enable PHP to access MySQL databases. If you use this option without specifying the path to MySQL, PHP will use the bundled MySQL client libraries. As of PHP 4, --with-mysql is enabled by default so to disable MySQL support you must use --without-mysql. Users who run other applications that use MySQL (for example, running PHP 3 and PHP 4 as concurrent apache modules, or auth-mysql) should always specify the path to the MySQL DIR: --with-mysql=/path/to/mysql. This will force PHP to use the client libraries installed by MySQL, avoiding any conflicts. &windows.builtin; Crashes and startup problems of PHP may be encountered when loading this extension in conjunction with the recode extension. See the recode extension for more information.