Memcache::connect

Description

bool Memcache::connect ( string host [, int port [, int timeout]] )

Memcache::connect() establishes a connection to the memcached server. Parameters host and port point to the host and port, where memcached is listening for connections. Parameter port is optional, it's default value is 11211. Also you can define a timeout (in seconds), which will be used when connecting to the daemon. Think twice before changing the default value - you can loose all the advantages of caching if your connection is too slow.

The connection, which was opened using Memcache::connect() will be automatically closed at the end of script execution. Also you can close it with Memcache::close().

Also you can use memcache_connect() function. See example below.

例子 1. Memcache::connect() example


<?php

/* procedural API */

$memcache_obj = memcache_connect('memcache_host', 11211);

/* OO API */

$memcache = new Memcache;
$memcache->connect('memcache_host', 11211);

?>

如果成功则返回 TRUE，失败则返回 FALSE。

See also Memcache::pconnect() and Memcache::close().

add a note User Contributed Notes

chrisn at allipo dot com
05-Sep-2006 04:39


The behavior of Memcache::connect() is to always reinitialize the pool from scratch regardless of any previous calls to addServer().



E.g.



$mmc = new Memcache()

$mmc->addServer('node1', 11211);

$mmc->addServer('node2', 11211);

$mmc->addServer('node3', 11211);



$mmc->connect('node1', 11211);



The last connect() call clears out the pool and then add and connect node1:11211 making it the only server.



If you want a pool of memcache servers, do not use the connect() function.



If you only want a single memcache server then there is no need to use the addServer() function.

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