如何让php切换案例检查类型？

Question

I want switch case to check with === rather than ==.

<?php
$favcolor = "1";

switch ($favcolor) {
    case 1:
        echo "Your favorite color is red!";
        break;
    case "blue":
        echo "Your favorite color is blue!";
        break;
    case "1":
        echo "Your favorite color is green!";
        break;
    default:
        echo "Your favorite color is neither red, blue, nor green!";
}
?>

This gives me:

Your favorite color is red! 

But I want it to say green. How is that possible?

Answer 1

From https://secure.php.net/manual/en/control-structures.switch.php

Note that switch/case does loose comparison.

You cannot achieve this using switch, consider using if - elseif - else in such case like:

if ( $favcolor === 1 )
    echo "Your favorite color is red!";
elseif ( $favcolor === "blue" )
    echo "Your favorite color is blue!";
elseif ( $favcolor === "1" )
    echo "Your favorite color is green!";
else
    echo "Your favorite color is neither red, blue, nor green!";