session_encode

Function name: session_encode()

Applicable version: PHP 4, PHP 5, PHP 7

Function description: The session_encode() function is used to encode the current session data into a string.

usage:

 string session_encode ( void )

Parameters: This function does not accept any parameters.

Return value: Returns an encoded string representing the current session data.

Example:

 // 开始会话session_start(); // 设置会话数据$_SESSION['name'] = 'John'; $_SESSION['age'] = 25; // 将会话数据编码为字符串$encodedData = session_encode(); // 打印编码后的字符串echo $encodedData;

Output:

 name|s:4:"John";age|i:25;

In the example above, we start a session first, and then set two session variables $_SESSION['name'] and $_SESSION['age'] . Then, we use the session_encode() function to encode the current session data into a string. Finally, we print out the encoded string.

The encoded string is a semicolon-separated list of key-value pairs. Each key-value pair consists of a key name, type, and value. In the example above, the value of name key is of string type, with a value of John ; the value of age key is of integer type, with a value of 25 .

Note that session_encode() function only encodes the current session data and does not include any global variables. If you need to encode global variables, use the serialize() function.