How can the use of if statements in PHP be optimized to improve code efficiency and readability?

To optimize the use of if statements in PHP for improved code efficiency and readability, consider using switch statements for multiple conditions instead of nested if statements. Switch statements can make the code more concise and easier to read, especially when dealing with multiple conditions.

// Example of using a switch statement instead of nested if statements
$day = "Monday";

switch ($day) {
    case "Monday":
        echo "Today is Monday";
        break;
    case "Tuesday":
        echo "Today is Tuesday";
        break;
    default:
        echo "Today is another day";
}