<?php

namespace Workerman\Protocols\Http\Session;

interface SessionHandlerInterface
{
    /**
     * Close the session
     * @link http://php.net/manual/en/sessionhandlerinterface.close.php
     * @return bool <p>
     * The return value (usually TRUE on success, FALSE on failure).
     * Note this value is returned internally to PHP for processing.
     * </p>
     * @since 5.4.0
     */
    public function close(): bool;

    /**
     * Destroy a session
     * @link http://php.net/manual/en/sessionhandlerinterface.destroy.php
     * @param string $sessionId The session ID being destroyed.
     * @return bool <p>
     * The return value (usually TRUE on success, FALSE on failure).
     * Note this value is returned internally to PHP for processing.
     * </p>
     * @since 5.4.0
     */
    public function destroy(string $sessionId): bool;

    /**
     * Cleanup old sessions
     * @link http://php.net/manual/en/sessionhandlerinterface.gc.php
     * @param int $maxLifetime <p>
     * Sessions that have not updated for
     * the last maxlifetime seconds will be removed.
     * </p>
     * @return bool <p>
     * The return value (usually TRUE on success, FALSE on failure).
     * Note this value is returned internally to PHP for processing.
     * </p>
     * @since 5.4.0
     */
    public function gc(int $maxLifetime): bool;

    /**
     * Initialize session
     * @link http://php.net/manual/en/sessionhandlerinterface.open.php
     * @param string $savePath The path where to store/retrieve the session.
     * @param string $name The session name.
     * @return bool <p>
     * The return value (usually TRUE on success, FALSE on failure).
     * Note this value is returned internally to PHP for processing.
     * </p>
     * @since 5.4.0
     */
    public function open(string $savePath, string $name): bool;

    /**
     * Read session data
     * @link http://php.net/manual/en/sessionhandlerinterface.read.php
     * @param string $sessionId The session id to read data for.
     * @return string <p>
     * Returns an encoded string of the read data.
     * If nothing was read, it must return an empty string.
     * Note this value is returned internally to PHP for processing.
     * </p>
     * @since 5.4.0
     */
    public function read(string $sessionId): string;

    /**
     * Write session data
     * @link http://php.net/manual/en/sessionhandlerinterface.write.php
     * @param string $sessionId The session id.
     * @param string $sessionData <p>
     * The encoded session data. This data is the
     * result of the PHP internally encoding
     * the $SESSION superglobal to a serialized
     * string and passing it as this parameter.
     * Please note sessions use an alternative serialization method.
     * </p>
     * @return bool <p>
     * The return value (usually TRUE on success, FALSE on failure).
     * Note this value is returned internally to PHP for processing.
     * </p>
     * @since 5.4.0
     */
    public function write(string $sessionId, string $sessionData): bool;

    /**
     * Update session modify time.
     *
     * @see https://www.php.net/manual/en/class.sessionupdatetimestamphandlerinterface.php
     *
     * @param string $sessionId
     * @param string $data Session Data.
     *
     * @return bool
     */
    public function updateTimestamp(string $sessionId, string $data = ""): bool;
}
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