(PHP 4, PHP 5, PHP 7, PHP 8)
session_encode — Encodes the current session data as a session encoded string
session_encode() returns a serialized string of the contents of the current session data stored in the $_SESSION superglobal.
By default, the serialization method used is internal to PHP, and is not the same as serialize(). The serialization method can be set using session.serialize_handler.
This function has no parameters.
Returns the contents of the current session encoded, or false on failure.
Must call session_start() before using session_encode().
session_encode() just return the session dataset in a formatted formsession_start();$_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;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?>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.