# 使用 redis 作為存儲方案session.save_handler = redissession.save_path = "tcp://127.0.0.1:6379"# 若設置了連接密碼, 則使用如下session.save_path = "tcp://127.0.0.1:6379?auth=密碼"

<?phpini_set("session.save_handler", "redis");ini_set("session.save_path", "tcp://127.0.0.1:6379");session_start();echo "<pre>";$_SESSION['usertest'.rand(1,5)]=1;var_dump($_SESSION);echo "</pre>";

session_set_save_handler ( callable $open , callable $close , callable $read , callable $write , callable $destroy , callable $gc [, callable $create_sid [, callable $validate_sid [, callable $update_timestamp ]]] ) : bool  # >= php5.4session_set_save_handler ( object $sessionhandler [, bool $register_shutdown = TRUE ] ) : bool

<?php/* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */namespace Symfony/Component/HttpFoundation/Session/Storage/Handler;/** * MemcacheSessionHandler. * * @author Drak <drak@zikula.org> */class MemcacheSessionHandler implements /SessionHandlerInterface{  /**   * @var /Memcache Memcache driver.   */  private $memcache;  /**   * @var int Time to live in seconds   */  private $ttl;  /**   * @var string Key prefix for shared environments.   */  private $prefix;  /**   * Constructor.   *   * List of available options:   * * prefix: The prefix to use for the memcache keys in order to avoid collision   * * expiretime: The time to live in seconds   *   * @param /Memcache $memcache A /Memcache instance   * @param array   $options An associative array of Memcache options   *   * @throws /InvalidArgumentException When unsupported options are passed   */  public function __construct(/Memcache $memcache, array $options = array())  {    if ($diff = array_diff(array_keys($options), array('prefix', 'expiretime'))) {      throw new /InvalidArgumentException(sprintf(        'The following options are not supported "%s"', implode(', ', $diff)      ));    }    $this->memcache = $memcache;    $this->ttl = isset($options['expiretime']) ? (int) $options['expiretime'] : 86400;    $this->prefix = isset($options['prefix']) ? $options['prefix'] : 'sf2s';  }  /**   * {@inheritdoc}   */  public function open($savePath, $sessionName)  {    return true;  }  /**   * {@inheritdoc}   */  public function close()  {    return $this->memcache->close();  }  /**   * {@inheritdoc}   */  public function read($sessionId)  {    return $this->memcache->get($this->prefix.$sessionId) ?: '';  }  /**   * {@inheritdoc}   */  public function write($sessionId, $data)  {    return $this->memcache->set($this->prefix.$sessionId, $data, 0, time() + $this->ttl);  }  /**   * {@inheritdoc}   */  public function destroy($sessionId)  {    return $this->memcache->delete($this->prefix.$sessionId);  }  /**   * {@inheritdoc}   */  public function gc($maxlifetime)  {    // not required here because memcache will auto expire the records anyhow.    return true;  }  /**   * Return a Memcache instance   *   * @return /Memcache   */  protected function getMemcache()  {    return $this->memcache;  }}