friendica/src/Core/Session/ISession.php

<?php

namespace Friendica\Core\Session;

/**
 * Contains all global supported Session methods
 */
interface ISession
{
	/**
	 * Start the current session
	 *
	 * @return self The own Session instance
	 */
	public function start();

	/**
	 * Checks if the key exists in this session
	 *
	 * @param string $name
	 *
	 * @return boolean True, if it exists
	 */
	public function exists(string $name);

	/**
	 * Retrieves a key from the session super global or the defaults if the key is missing or the value is falsy.
	 *
	 * Handle the case where session_start() hasn't been called and the super global isn't available.
	 *
	 * @param string $name
	 * @param mixed  $defaults
	 *
	 * @return mixed
	 */
	public function get(string $name, $defaults = null);

	/**
	 * Sets a single session variable.
	 * Overrides value of existing key.
	 *
	 * @param string $name
	 * @param mixed  $value
	 */
	public function set(string $name, $value);

	/**
	 * Sets multiple session variables.
	 * Overrides values for existing keys.
	 *
	 * @param array $values
	 */
	public function setMultiple(array $values);

	/**
	 * Removes a session variable.
	 * Ignores missing keys.
	 *
	 * @param string $name
	 */
	public function remove(string $name);

	/**
	 * Clears the current session array
	 */
	public function clear();
}