Session array in mysql query

hey there,

i have a variable in php called $_SESSION[‘memberinfo’]. it is an array.

anyone know the syntax so i don’t have to store an array value into a temporary variable? for example instead of:

$username = $_SESSION[‘memberinfo’][4];
$query =
“SELECT * FROM members where username=’$username’”;

use this instead:
$query =
“SELECT * FROM members where username=’$_SESSION[memberinfo][4]’”;

chris