php无法存储任何_SESSION或_GLOBALS变量

Question

I am storing a session and a global variable in file1.php. However, when I try to access those from file2.php I get nothing. I am using php 5.1.6.

$_SESSION['abc'] = $a;
$GLOBALS['def'] = $b;

Any idea?

Thanks in advance.

Answer 1

• Do you have cookies enabled on your browser?
• Are you remembering to call session_start at the top of BOTH pages?
• Are you storing your session variables in $_SESSION ? Nothing else will store.

In regards to your edit: The variable stored in $GLOBALS is just a global to that script. You have to put the value in $_SESSION to use across pages.

Example:

// Page 1
session_start();
$_SESSION['abc'] = "hello world";
$GLOBALS['def']  = "More stuff.";

// Page 2
session_start();
echo $_SESSION['abc'];   // prints 'hello world'
echo $GLOBALS['def'];   // is not defined. Globals aren't session variables.