带有$ _GET变量的PHP switch语句

Question

Pages such as this: PHP switch case $_GET's variables and switch case $_GET's variable's values and others have helped, but I am at a loss as to why my switch statment does not work.

A user may be directed to my page with index.php?class=className&badge=badgeName or index.php?class=className or index.php?badge=badgeName or just plain old index.php

This code works just fine

if ($_GET["badge"] && $_GET["class"]) {
echo 'Badge and Class'; 
} elseif ($_GET["badge"] && !$_GET["class"]) {
echo 'Badge only';   
} elseif (!$_GET["badge"] && $_GET["class"]) {
echo 'Class only';  
} else {
echo 'No variables';    
} 

But I was trying to simplify with a switch statement, whereby all works well except for the default case:

switch ($_GET) {
    case $_GET["badge"] && $_GET["class"]:
        echo 'Badge and Class';
        break;
    case $_GET["badge"] && !$_GET["class"]:
        echo 'Badge Only';
        break;
    case !$_GET["badge"] && $_GET["class"]:
        echo 'Class only';
        break;
    default:
        echo "No badge or class";
}

Any help appreciated.

Answer 1

You can try something like this:

switch (true) {
    case ($i ==0):
        echo '$i ==0';
        break;
    case ($i < 1):
        echo '$i < 1';
        break;
    case ($i > 1):
        echo '$i > 1';
        break;
}

For your case:

switch (true) {
    case ($_GET["badge"] && $_GET["class"]):
        echo 'Badge and Class';
        break;
    case ($_GET["badge"] && !$_GET["class"]):
        echo 'Badge Only';
        break;
    case (!$_GET["badge"] && $_GET["class"]):
        echo 'Class only';
        break;
    default:
        echo "No badge or class";
}