| 注意 |
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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：重要提示: 自 PHP 4.2.0 開始，PHP 中的選項 register_globals 的默認值被設爲 off。PHP 社區鼓勵大家不要依賴於這個選項，用其它的替代，例如 superglobals。
| 注意 |
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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. |
| 注意 |
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If you are using $_SESSION (or $HTTP_SESSION_VARS), do not use session_register(), session_is_registered(), and session_unregister(). |