How can separating PHP code into multiple files impact the functionality of a web application?

Separating PHP code into multiple files can improve code organization and maintainability. It allows for better modularization, reusability, and easier collaboration among developers. However, it is essential to ensure proper file inclusion and handling to prevent any functionality issues. 

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

echo addNumbers(5, 10);
?>

// functions.php
<?php
function addNumbers($num1, $num2) {
    return $num1 + $num2;
}
?>

Keywords

PHP code separation functionality web application impact

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