How to use php _GET?

I am asking two things.

1. The first question is am I doing this correctly? I am putting together a li开发者_如何学编程nk with javascript variables

   http://google.com/test.php?var="+class4
   

   And then I am using php to get the values of the variables from the URL

2. Can I use a link at all to do the variables or must I use a button? When using the link nothing shows in the url after the ?.

---

To make the link you'd need to do something like

var link = "http://google.com/test.php?class=" + "class4";

To go there you would do something like

location.href = link;

And in the PHP code to get the value, you would do something like

$class = $_GET['class'];

---

Link should look like http://google.com/test.php?var=class4 (There is no need for quotes or +)

then you can do echo $_GET['var'];

---

hmm what dou you get out of this :

var url = 'http://google.com/test.php?var='+class4;
alert(url);

Assuming 'class4' is an variable in javascript you have created. otherwise

var url = 'http://google.com/test.php?var=class4';
alert(url);

Does this give you the url you are wanting to redirect to ?

if so try to copy paste the alert from the alert into the browsers adresbar and test if it works

in the php page just after