On Unix, php (as the current mainstream development language) .ini file is placed on /usr/local/lib by default, because the default storage path is
The default location of php on Windows (as the current mainstream development language) .ini is the windows system directory. If apache is used (the most popular WEB server platform on Unix platform) , then php(as the current mainstream development language).ini will be searched first from the installation directory of apache(the most popular WEB server platform on Unix platform), for example :c:program filesapache(The most popular WEB server platform on the Unix platform) groupapache(The most popular WEB server platform on the Unix platform), so that you can configure different files on the same machine apache (the most popular WEB server platform on Unix platform) has different versions of php (as the current mainstream development language) .ini file.