How can the use of switch statements improve the efficiency of string comparison in PHP?

Switch statements can improve the efficiency of string comparison in PHP by allowing for direct comparisons between a variable and multiple possible values, rather than using multiple if-else statements. This can make the code more readable and easier to maintain, especially when dealing with a large number of string comparisons.

$color = "red";

switch ($color) {
    case "red":
        echo "The color is red";
        break;
    case "blue":
        echo "The color is blue";
        break;
    case "green":
        echo "The color is green";
        break;
    default:
        echo "Unknown color";
}