如何让 php switch case 检查类型？

Question

我希望使用 === 而不是 == 检查 switch case。

<?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!";
}
?>

这给了我：

Your favorite color is red!

但我希望它显示绿色。这怎么可能？

Answer 1

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

Note that switch/case does loose comparison.

您无法使用 switch 实现此目的，在这种情况下考虑使用 if - elseif - else：

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!";

如何让 php switch case 检查类型？

How to make php switch case check for type?

php

identity

equality

switch-statement