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119 lines
2.5 KiB
Plaintext
119 lines
2.5 KiB
Plaintext
Updating your script to PHP6
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============================
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This document attempts to describe portions of PHP that changed or
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disapeared in PHP6 and the best practices for upgrading existing
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applications to support PHP6.
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1. Language
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1.1 Functions and function aliases
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1.2 Register globals
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1.3 Magic quotes
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1.4 References
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2. Unicode (see README.UNICODE-UPGRADES)
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2. Extensions
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2.1 GD
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1.1 Functions and function aliases
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------------------------------
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<TODO: List all arguments order changes, aliases droped in php6...>
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1.2 Register globals
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----------------
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For security reasons, register_globals has been removed from php6.
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ini_get('register_globals') will always return false.
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You can emulate its behavior with some minimum changes in your code.
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*DISCLAIMER*
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people should get a short-term solution if they are willing to run
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an insecure app.
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Here is an example to emulate the session related functions and
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a snippet to register variables:
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$_register_globals_order = strrev(ini_get("variables_order"));
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$_register_globals_order_len = strlen($_register_globals_order);
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for($_register_globals_i=0;$_register_globals_i<$_register_globals_order_len;$_register_globals_i++) {
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switch($_register_globals_order{$_register_globals_i}) {
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case "E":
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extract($_ENV, EXTR_REFS|EXTR_SKIP);
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break;
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case "G":
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extract($_GET, EXTR_REFS|EXTR_SKIP);
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break;
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case "P":
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extract($_POST, EXTR_REFS|EXTR_SKIP);
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break;
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case "C":
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extract($_COOKIE, EXTR_REFS|EXTR_SKIP);
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break;
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case "S":
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extract($_SERVER, EXTR_REFS|EXTR_SKIP);
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break;
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}
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}
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unset($_register_globals_order, $_register_globals_order_len, $_register_globals_i);
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function session_register($mixed) {
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static $started;
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if(!isset($started) || session_id() === "") {
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session_start();
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$started = true;
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}
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$array = func_get_args();
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foreach($array as $mixed) {
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if(is_scalar($mixed)) {
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$_SESSION[$mixed] =& $GLOBALS[$mixed];
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}
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elseif(is_array($mixed)) {
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foreach($mixed as $name) {
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$ok = session_register($name);
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if(!$ok) {
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return false;
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}
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}
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}
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else {
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return false;
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}
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}
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return true;
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}
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function session_is_registered($name) {
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if(is_scalar($name)) {
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return isset($_SESSION[$name]);
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}
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return false;
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}
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function session_unregister($name) {
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if(isset($_SESSION[$name]) && is_scalar($name)) {
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unset($_SESSION[$name]);
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return true;
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}
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return false;
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}
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1.3 Magic quotes
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------------
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1.4 References
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----------
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<TODO: Derick plans to clean the reference mess in php6>
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2.1 GD
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<TODO: gd2/ft2 only, functions droped>
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