The switch-case statement is an alternative to the if-elseif-else statement, which does almost the same thing. The switch-case statement tests a variable against a series of values until it finds a match, and then executes the block of code corresponding to that match.

Syntax

switch(n){
    case label1:
        // Code to be executed if n=label1
        break;
    case label2:
        // Code to be executed if n=label2
        break;
    ...
    default:
        // Code to be executed if n is different from all labels
}

Consider the following example, which displays a different message for each day.

<?php
    $today = date("D");
    switch($today){
        case "Mon":
            echo "Today is Monday. Have to go office.";
            break;
        case "Tue":
            echo "Today is Tuesday. Write a Blog.";
            break;
        case "Wed":
            echo "Today is Wednesday. Visit a doctor.";
            break;
        case "Thu":
            echo "Today is Thursday. Update website.";
            break;
        case "Fri":
            echo "Today is Friday. Party tonight.";
            break;
        case "Sat":
            echo "Today is Saturday. Its movie time.";
            break;
        case "Sun":
            echo "Today is Sunday. Do some rest.";
            break;
        default:
            echo "No information available for that day.";
            break;
    }
    ?>