Local PHP configuration
PHP 5.3 added a useful feature, per-directory .ini files. You can enter PHP configuration directives into a text file named “.user.ini”, upload it to your htdocs directory or any other directory of your website, and that configuration will be used for any PHP scripts in that directory or below.
For example, you may not want to display page errors to visitors of your website, but want to see them for anything in the /development/ sub-directory where you’re working on new things. You might create a .user.ini file in that sub-directory containing
error_reporting = E_ALL
display_errors = On
display_startup_errors = On
Or perhaps you have a sub-directory of remote procedure calls which are invoked from a webpage via AJAX and always return JSON data. You could simplify them by creating a .user.ini file in that subdirectory containing
default_mimetype = “application/json”
display_errors = Off
What can’t you do? You can’t use any configuration directives marked PHP_INI_SYSTEM, which cover fundamental and security-related PHP configuration are reserved for the root php.ini file.
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