session_register

Description

bool session_register ( 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_

Atención

If you want your script to work regardless of register_globals, you need to instead use the $_SESSION array as $_SESSION entries are automatically registered_ If your script uses session_register(), it will not work in environments where the PHP directive register_globals is disabled_

register_globals: Nota importante: Desde PHP 4_2_0 el valor por defecto de la directiva register_globals es off_ La comunidad PHP anima a todos a no confiar en esta directiva y usar en su lugar superglobals_

Atención

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_

Atención

If you are using $_SESSION (or $HTTP_SESSION_VARS), do not use session_register(), session_is_registered(), and session_unregister()_

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_

<?php
// Use of session_register() is deprecated
$barney = "A big purple dinosaur_";
session_register("barney");

// 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_";
?>

Nota: 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';