本文实例讲述了php实现redis数据库指定库号迁移的方法,分享给大家供大家参考。具体如下：

redis普通的数据库迁移,只能整个redis save,或者利用主从,当然也可以安装一个redis-dump,不过比较麻烦,这里提供一种php的脚本,实现指定库号的迁移,其实也就是遍历根据存储类型,读出来,插入新库,效果是这样:

复制代码 代码如下:[root@localhost ~]# php 1.php

1/407

101/407

201/407

301/407

401/407

PHP实例代码如下:

复制代码 代码如下:<?php

$from = '10.0.2.52:6379/7';

$to = '127.0.0.1:6379/7';

$from_redis = redis_init($from);

$to_redis = redis_init($to);

$keys = $from_redis->keys('*');

$count = 0;

$total = count($keys);

foreach($keys as $key){

if(++$count % 100 == 1){

echo "$count/$totaln";

}

$type = $from_redis->type($key);

switch($type){

case Redis::REDIS_STRING:

$val = $from_redis->get($key);

$to_redis->set($key, $val);

break;

case Redis::REDIS_LIST:

$list = $from_redis->lRange($key, 0, -1);

foreach($list as $val){

$to_redis->rPush($key, $val);

}

break;

case Redis::REDIS_HASH:

$hash = $from_redis->hGetAll($key);

$to_redis->hMSet($key, $hash);

break;

case Redis::REDIS_ZSET:

$zset = $from_redis->zRange($key, 0, -1, true);

foreach($zset as $val=>$score){

$to_redis->zAdd($key, $score, $val);

}

break;

}

}

function redis_init($conf){

$redis = new Redis();

preg_match('/^([^:]+)(:[0-9]+)?/(.+)?/', $conf, $ms);

$host = $ms[1];

$port = trim($ms[2], ':');

$db = $ms[3];

$redis->connect($host, $port);

$redis->select($db);

return $redis;

}

?>

希望本文所述对大家的php程序设计有所帮助。