解压:tar -zvxf redis-4.0.8.tar.gz

cd redis-4.0.8
make
cd src
make install PREFIX=/usr/local/redis //安装到指定目录
//移动配置文件到安装目录
mkdir /usr/local/redis/etc
mv redis.conf /usr/local/redis/etc

//配置redis为后台启动
vim /usr/local/redis/etc/redis.conf //将daemonize no 改成daemonize yes
//允许除本机外的其他机器访问
bind 192.168.66.59(redis服务器的某块网卡的地址:即其他服务器访问改redis服务器时访问对应访问该服务器的ip地址)
protected-mode no
//以上不做设置时,用其他服务器访问redis服务器时会被拒绝
//将redis加入到开机启动
vi /etc/rc.local
//在里面添加内容：
/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf (意思就是开机调用这段开启redis的命令)

/usr/local/redis/bin/redis-server /usr/local/redis/etc/redis.conf
//开启客户端
/usr/local/redis/bin/redis-cli 

git clone phpredis/phpredis,此时clone失败报:error: Peer reports incompatible or unsupported protocol version. while accessing https://github.com/nicolasff/phpredis/info/refs
解决:https请求的原因更新curl libcurl库。
yum update -y nss curl libcurl
然后重新克隆
cd phpredis
which phpize
//用phpize生成configure配置文件 执行
usr/bin/phpize
./configure --with-php-config=/usr/bin/php-config //此处为php-config的路径，可用whereis php-config查看路径 或者 find / -name phpize 得到路径
make && make install
vim php.ini
//在最后添加:
extension=redis.so;
重启php service php-fpm restart
报错:
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/redis.so' - /usr/lib64/php/modules/redis.so: undefined symbol: php_json_decode_ex in Unknown on line 0这是因为和json扩展加载顺序冲突导致的解决方法：不要在php.ini里加入extension=redis.so这行，可在php.d文件夹下创建新文件redis.ini，在redis.ini里加入extension=redis.so这行.
重启php
php -m 发现redis扩展加载上了源码安装的redis开启关闭服务操作:
1.redis关闭
redis-cli -h 127.0.0.1 -p 6379 shutdown
2.redis启动
redis-server
如果上述方式都没有成功停止redis，则可以使用终极武器 kill -9
$ ps -ef | grep redis | awk ‘{print $2}’ | xargs kill -9

<?php
class redisServer{private $redis;private $attr=["dbId"=>0];//默认dbid;protected $dbId=0;private $expireTime;private $host;private $port;public function __construct($config=[],$attr=[]){$this->redis=new Redis();$this->attr=array_merge($this->attr,$attr);$this->host=$config["host"];$this->port=$config["port"] ? $config["port"]: 6379;$this->dbId=$attr["dbId"] ?$attr["dbId"]: 0;//$this->redis->connect($config["host"],$config["port"],$this->attr["timeout"]);$this->redis->connect($config["host"],$config["port"]);$this->redis->select($this->dbId);//$this->expireTime=time()+$this->attr["timeout"];}public   function getRedis($config=[],$attr=[]){return $this->redis;}}
?>
//调用:
<?php
require_once("redisServer.php");
$redisConfig=["host"=>"192.168.66.59","port"=>6379];
$attr=["dbId"=>0];$redisServer=new redisServer($redisConfig,$attr);
$redis=$redisServer->getRedis();
$redis->set("say","hello");
var_dump($redis->get("say"));exit;
?>

<?php
class memcachedServer{private $host;private $port;private $memcache;public function __construct($config,$attr=[]){$this->memcache= new Memcached();$this->memcache->setOption(Memcached::OPT_LIBKETAMA_COMPATIBLE, true);$this->host=$config["host"]??'127.0.0.1';$this->port=$config["port"]??11211;//避免单个php-fpm在建立完以persistent_id命名的长连接后不再重复建立长连接if(!count( $this->memcache->getServerList())){$this->memcache->addServer($this->host,$this->port);}}public function getMem(){return $this->memcache;}
}
?>
//调用;
<?php
include_once("memcacheServer.php");
$config=["host"=>"192.168.66.59","11211"];
$memServer=new memcachedServer($config);
$mem=$memServer->getMem();
$mem->set("say","hello memcacheService1");
var_dump($mem->get("say"));exit;
?>