How does creating a function for an if-else construct impact the scope in PHP?

Creating a function for an if-else construct in PHP can help improve code readability and maintainability by encapsulating the logic within a reusable function. However, it's important to consider the scope of variables when using functions. Variables defined outside the function are not accessible within the function unless explicitly passed as parameters. 

// Example of creating a function for an if-else construct in PHP
function checkNumber($number) {
    if ($number % 2 == 0) {
        echo "The number is even.";
    } else {
        echo "The number is odd.";
    }
}

$myNumber = 10;
checkNumber($myNumber);

Keywords

PHP function if-else construct scope impact

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