( mixed name [, mixed ...] )
session_register() accepts a variable number of
arguments, any of which can be either a string holding the name of a
variable or an array consisting of variable names or other arrays. For
each name, session_register() registers the global
variable with that name in the current session.
If you want your script to work regardless of register_globals,
you need to instead use the
as $_SESSION entries are automatically
registered. If your script uses
session_register(), it will not work in
environments where the PHP directive
note: Since PHP 4.2.0, the default value for the PHP directive
off. The PHP community encourages all to not rely on this
directive but instead use other means, such as the superglobals.
This registers a global variable. If you
want to register a session variable from within a function, you
need to make sure to make it global using the global
keyword or the $GLOBALS array, or use the
special session arrays as noted below.
This function returns TRUE when all of the variables are successfully
registered with the session.
If session_start() was not called before this function
is called, an implicit call to session_start() with no
parameters will be made. $_SESSION does not mimic
this behavior and requires session_start() before use.
You can also create a session variable by simply setting the
appropriate member of the $_SESSION
or $HTTP_SESSION_VARS (PHP < 4.1.0) array.
// Use of session_register() is deprecated
$barney = "A big purple dinosaur.";
// Use of $_SESSION is preferred, as of PHP 4.1.0
$_SESSION["zim"] = "An invader from another planet.";
// The old way was to use $HTTP_SESSION_VARS
$HTTP_SESSION_VARS["spongebob"] = "He's got square pants.";
It is currently impossible to register resource variables in a
session. For example, you cannot create a connection to a
database and store the connection id as a session variable and
expect the connection to still be valid the next time the
session is restored. PHP functions that return a resource are
identified by having a return type of
resource in their function definition. A
list of functions that return resources are available in the
resource types appendix.
If $_SESSION (or
$HTTP_SESSION_VARS for PHP 4.0.6 or less) is
used, assign values to
$_SESSION. For example: $_SESSION['var'] = 'ABC';
See also session_is_registered(),