php - passing variable between pages

Question

Is it good way to pass variable between pages using $_GET method with url:

<a href="input_obj.php?id='$id'&method=plain

and take it in file input_obj.php with such code:

$id = $_GET['id'];
$method = $_GET['method'];

OR

using session - has someone idea how?

Answer 1

It depends on your needs, really, If you are passing search arguments between pages, for example, and the variables should be both persistent and be available to the end user (via bookmarking, for example), then pass them in the URL (but don't usually use quotes like you have around $id in "input_obj.php?id='$id'&method=plain)

If you are truly passing internal variables between scripts, this is better done via $_SESSION variables. Remember that end users can easily modify variables passed through URLs. Unless they are intended for use by the end user, that may be a real problem. By using $_SESSION, you insulate your script's variables from tampering by the end user when it's necessary to insulate them. (unless, of course, the variables are produced by other user input via GET/POST/COOKIE)

//page1.php
session_start();
$_SESSION['id'] = $id;

//page2.php
session_start();
echo $_SESSION['id'];