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How can functions be utilized to improve code structure and readability in PHP when dealing with complex conditional logic?

When dealing with complex conditional logic in PHP, functions can be utilized to improve code structure and readability by encapsulating the logic into separate, named blocks of code that can be easily called and reused. This helps to break down the complex logic into smaller, more manageable chunks, making the code easier to understand and maintain.

php 
// Example of using functions to improve code structure and readability in PHP

function isUserLoggedIn($user) {
    // Check if user is logged in
    // Return true or false based on the logic
}

function isAdmin($user) {
    // Check if user is an admin
    // Return true or false based on the logic
}

// Complex conditional logic using the functions
$user = getUser(); // Get user object

if (isUserLoggedIn($user) && isAdmin($user)) {
    // Perform actions for logged in admins
} else {
    // Perform actions for other users
}

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