What is the correct syntax for including external functions from a PHP file into a script?

To include external functions from a PHP file into a script, you can use the `include` or `require` statements in your script. These statements allow you to include the contents of another PHP file, which can contain functions or other code that you want to use in your current script. By including the external file, you can easily access and use the functions defined within it in your script.

// Include the external PHP file containing functions
include 'external_functions.php';

// Now you can use the functions defined in external_functions.php
someFunction();