How can the use of conditional statements like if-else impact the readability and maintainability of PHP code in complex projects?

Using too many nested if-else statements can make the code harder to read and maintain in complex PHP projects. To improve readability and maintainability, consider using switch statements or refactoring the code into separate functions or classes. 

// Example of refactoring nested if-else statements into separate functions

function processUserInput($input) {
    if ($input === 'A') {
        return handleOptionA();
    } elseif ($input === 'B') {
        return handleOptionB();
    } else {
        return handleDefault();
    }
}

function handleOptionA() {
    // Code to handle option A
}

function handleOptionB() {
    // Code to handle option B
}

function handleDefault() {
    // Code to handle default case
}

// Usage
$result = processUserInput($userInput);

Keywords

conditional statements if-else readability maintainability complex projects

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