PHP get方法总是1？ [关闭]

Question

Why is the php get method value always 1? Here's my code.

echo isset($_GET['page']);
switch(isset($_GET['page'])){
    case 'a':
        echo '1';
        break;      
    case 'b':
        echo 2'';
        break;  
    case 'c':
        echo '3';
        break;          
    case 'd':
        echo '';
        break;          
    case 'e':
        echo '4';
        break;      
    default:
        echo '5';
}

And the value of the get method is always 1, showed in the first line code. Thanks for answering and helping me out to make a website.

Answer 1

isset($_GET['page'])

isset returns true or false if $_GET['page'] is set. In this case php treats true as 1.

Use the actual value:

echo $_GET['page'];

You can check if it's set which is likely what you intended:

if(isset($_GET['page'])){
    //Do stuff with $_GET['page']
}