PHP ini_set Function: Usage Guide

The `ini_set` function is used to set the value of PHP configuration options. It takes two parameters, the first one being the name of the configuration option to be set, and the second one being the value to be set. For example, to set the error reporting level of PHP to display all errors, you can use the following code:

ini_set('display_errors', 1);

This will display errors during runtime to make it easier to find and debug issues during the development process. Please note that the ini_set function only applies to the current script, so configuration options need to be reset in each script file.