In this example, we define two functions: set_global_variable and get_global_variable. The set_global_variable function uses bind_global to create a global variable called 'my_data' and set its value to the provided data. The get_global_variable function then retrieves the value of the 'my_data' variable and returns it. This code example most likely belongs to the PHP core library as bind_global is a built-in PHP function. Overall, bind_global offers a convenient way to share data across different parts of a PHP application. It is important to keep in mind, however, that global variables can lead to naming conflicts and other issues, so it is generally best to use them sparingly and carefully.