session_encode

(PHP 4, PHP 5, PHP 7, PHP 8)

session_encode — 将当前会话数据编码为字符串

说明

session_encode(): string|false

session_encode() 返回一个序列化后的字符串，包含被编码的、储存于 $_SESSION 超全局变量中的当前会话数据。

默认情况下，PHP 内部使用的序列方法和 serialize() 是不一样的。该序列方法通过 session.serialize_handler 来设置。

参数

此函数没有参数。

返回值

返回当前会话编码后的内容，或者在失败时返回 false。

注释

警告

在调用 session_encode() 之前必须先调用 session_start()。

参见

session_decode() - 解码会话数据
session.serialize_handler

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用户贡献的备注 3 notes

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<carlos sica>sica at wnet dot com dot br ¶

20 years ago

session_encode() just return the session dataset in a formatted formsession_start();$_SESSION['login_ok'] = true;$_SESSION['nome'] = 'sica';$_SESSION['inteiro'] = 34;echo session_encode();this code will printlogin_ok|b:1;nome|s:4:"sica";inteiro|i:34;

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Mark P ¶

8 years ago

session_encode() can't handle pipes in your keys.<?phpsession_start();$_SESSION = ['foo|bar'=>'ba;z']; patheticdump(session_encode()); // false because "foo|bar" contains a pipe?>

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polygon dot co dot in at gmail dot com ¶

8 months ago

The session_encode and session_decode functions are incomplete.Because there is no option to collect the output values for session_decode  or input an array in session_encode.I faced this issue while trying to implement custom session using session_set_save_handler.It led me to limit the functionality to particular serialize_handler and had to hardcode the encode and decode functions like serialize and unserialize for option ['serialize_handler' => 'php_serialize'] instead of session_encode and session_decode once i am done with defining the encoding algo.