Function executing order in an if statement php

I want to make a function for a "secure" php page that will check the token(the one passed by post and the one from the session).
      But I don't want to write two if statements like this:

function CheckToken(){
    if(isset($_POST['token']) && isset($_SESSION['token']))
        if($_POST['token']==$_SESSION['token']) return true;

    return false;
}

Can I do something like this(?):

function CheckToken(){
    if(isset($_POST['token']) && isset($_SESSION['token']) && $_POST['token']==$_SESSION['token']) return true;
    return false;
}

     Here's all about the order in which those functions are executed (when using the and operator).So if you're using the AND operand then if the first conditions is false don't evaluate the second. I remember that vb.net had a solution to this problem(evaluating only the first function-if it is false don't evaluate the second one).
     So, is it safe to put everything on a single line(like I did in the second example)?