php-redis函数帮助手册_consturct_connect_open_pconnect...

Redis::__construct

Description Creates a Redis client
创建一个Redis客户端
Example

$redis = new Redis();

connect, open

Description Connects to a Redis instance.（ 连接到一个Redis实例）
Parameters host: string. can be a host, or the path to a unix domain socket
host:字符串类型 可以使一个HOST IP或者是一个UNIX DOMAIN SOCKET的路径
port: int, optional
port:整数型,Redis的运行端口
timeout: float, value in seconds (optional, default is 0 meaning unlimited)
timeout:浮点型,连接的市场，单位是秒,默认为0即连接没有时间限制
Return Value BOOL:

TRUE

on success,

FALSE

on error.
Example

$redis->connect('127.0.0.1', 6379);
$redis->connect('127.0.0.1'); // port 6379 by default
$redis->connect('127.0.0.1', 6379, 2.5); // 2.5 sec timeout.
$redis->connect('/tmp/redis.sock'); // unix domain socket.

pconnect, popen

Description Connects to a Redis instance or reuse a connection already established with

pconnect

/

popen

.
pconnect/popen用于连接一个Redis的实例或者复用一个已经存在的实例。
The connection will not be closed on

close

or end of request until the php process ends. So be patient on to many open FD's (specially on redis server side) when using persistent connections on many servers connecting to one redis server.
这个连接将不会被主动关闭，比如使用close()，或者PHP执行结束这个连接都不会被主动关闭。当有大量的connect请求在redis服务器端时，使用持久化的连接对象。
Also more than one persistent connection can be made identified by either host + port + timeout or host + persistent_id or unix socket + timeout.
一个持久化的连接实例，可以使用HOST+PORT+TIMEOUT或者HOST+persistent_id或者SOCKET+TIMEOUT的方式创建。
This feature is not available in threaded versions.

pconnect

and

popen

then working like their non persistent equivalents.
pconnect函数和popen函数在线程版本中不能被使用。
Parameters host: string. can be a host, or the path to a unix domain socket
port: int, optional
timeout: float, value in seconds (optional, default is 0 meaning unlimited)
persistent_id: string. identity for the requested persistent connection
Return Value BOOL:

TRUE

on success,

FALSE

on error.
Example

$redis->pconnect('127.0.0.1', 6379);
$redis->pconnect('127.0.0.1'); // port 6379 by default - same connection like before.
$redis->pconnect('127.0.0.1', 6379, 2.5); // 2.5 sec timeout and would be another connection than the two before.
$redis->pconnect('127.0.0.1', 6379, 2.5, 'x'); // x is sent as persistent_id and would be another connection the the three before.
$redis->pconnect('/tmp/redis.sock'); // unix domain socket - would be another connection than the four before.

close

Description Disconnects from the Redis instance, except when

pconnect

is used.
关闭Redis的连接实例,但是不能关闭用pconnect连接的实例
$redis->close();

setOption

Description Set client option.
设置客户端的选项
Parameters parameter name
parameter value
Return value BOOL:

TRUE

on success,

FALSE

on error.
Example

$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_NONE);   // don't serialize data
$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_PHP);    // use built-in serialize/unserialize
$redis->setOption(Redis::OPT_SERIALIZER, Redis::SERIALIZER_IGBINARY);   // use igBinary serialize/unserialize
$redis->setOption(Redis::OPT_PREFIX, 'myAppName:'); // use custom prefix on all keys

getOption

Description Get client option.
取得客户端的选项
Parameters parameter name
Return value Parameter value.
Example

$redis->getOption(Redis::OPT_SERIALIZER);   // return Redis::SERIALIZER_NONE, Redis::SERIALIZER_PHP, or Redis::SERIALIZER_IGBINARY.