PHP implementation of the Redis database to specify the library number migration method, Redis database _php Tutorial

PHP implements a Redis database to specify the library number migration method, Redis database

The example of this paper describes the implementation of the Redis database to specify the library number migration method, share to everyone for your reference. Specific as follows:

Redis Normal Database migration, only the entire Redis save, or use master and slave, of course, can also install a redis-dump, but more trouble, here is a PHP script to achieve the specified library number of the migration, in fact, the traversal according to the storage type, read out, insert a new library, The effect is this:
Copy CodeThe code is as follows: [Root@localhost ~]# php 1.php
1/407
101/407
201/407
301/407
401/407
The PHP instance code is as follows:
Copy CodeThe code is as follows: <?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/$total \ n";
}
$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;
}
?>

I hope this article is helpful to everyone's PHP programming.

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