pconnect, popen · php-redis中文幫助手冊

## pconnect, popen ##### *Description* Connects to a Redis instance or reuse a connection already established with `pconnect`/`popen`. pconnect/popen用于連接一個Redis的實例或者復用一個已經存在的實例。 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. 這個連接將不會被主動關閉，比如使用close()，或者PHP執行結束這個連接都不會被主動關閉。當有大量的connect請求在redis服務器端時，使用持久化的連接對象。 Also more than one persistent connection can be made identified by either host + port + timeout or host + persistent\_id or unix socket + timeout. 一個持久化的連接實例，可以使用HOST+PORT+TIMEOUT或者HOST+persistent\_id或者SOCKET+TIMEOUT的方式創建。 This feature is not available in threaded versions. `pconnect` and `popen` then working like their non persistent equivalents. pconnect函數和popen函數在線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* ``` <pre class="calibre9">$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. ```