How can PHP developers handle functions that need to be used in multiple files to avoid duplication and maintain code cleanliness?

To handle functions that need to be used in multiple files, PHP developers can create a separate file containing these functions and then include this file in the necessary PHP scripts. This approach helps to avoid duplication of code and ensures code cleanliness by centralizing the functions in one location. 

// functions.php
function myFunction() {
    // Function logic here
}

// index.php
include 'functions.php';

myFunction();

Keywords

PHP functions include require code cleanliness

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