存儲(chǔ)在文件

修改php.ini 
session.save_handler = files 
session.save_path = “/home/logs/session”

或者在php代碼中 
ini_set(“session.save_handler”, “files”); 
ini_set(“session.save_path”, “/home/logs/session″);

存儲(chǔ)在memcache

修改php.ini 
session.save_handler = “memcache” 
memcache.hash_strategy = “consistent” // 設(shè)置memcache的hash算法 
session.save_path = “tcp://localhost:11211” // 設(shè)置session儲(chǔ)存的位置，多臺(tái)memcache用逗號(hào)隔開，比如”tcp://localhost:11211?weight=30,tcp://localhost:12000”

或者在php代碼中 
ini_set(“session.save_handler”, “memcache”); 
ini_set(“session.save_path”, “tcp://127.0.0.1:11211″);

存儲(chǔ)在redis

session.save_handler = redis 
session.save_path = “tcp://localhost:6379”

或者在php代碼中 
ini_set(“session.save_handler”, “redis”); 
ini_set(“session.save_path”, “tcp://localhost:6379″);

如果在redis配置中設(shè)置了連接密碼requirepass，save_path設(shè)為”tcp://localhost:6379?auth=pwd”

// 測試代碼
session_start();
$_SESSION['sessionid'] = 'session content';
echo $_SESSION['sessionid'];  echo '<br/>';

$redis = new Redis();
$redis->connect("127.0.0.1","6379");
//redis用session_id作為key并且是以string的形式存儲(chǔ)
echo 'session_id:' . session_id(); echo '<br>';
echo $redis->get('PHPREDIS_SESSION:' . session_id());

輸出
session content
session_id:jd7qn0c4lnn39fs3p9gt1fjve0
sessionid|s:15:"session content";
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最后，別忘了重啟php-fpm和nginx 
/etc/init.d/php-fpm restart 
/usr/nginx/sbin/nginx -s reload