在PHP中连接到故障转移数据库 [英] Connect to failover db in PHP

问题描述

在php中有一个快速的方法说如果db1不可用，连接到db2？

In php is there a quick way to say if db1 is unavailable connect to db2 instead?

这里是我现在在做什么：

Here is what I'm doing now:

$username="XXXXXXXXX";
$password="XXXXXXXXX";
$database="XXXXXXXXX";
$hostname="XXXXXXXXX";

mysql_connect($hostname,$username,$password);

@mysql_select_db($database) or die("unable to select database");

推荐答案

mysql_select_db将返回一个布尔值，
http://id2.php.net/manual /en/function.mysql-select-db.php

mysql_select_db will return a boolean indicating if it succeeded. http://id2.php.net/manual/en/function.mysql-select-db.php

So you'd rather write:
if (!($db = mysql_select_db($database))) {
 $db = mysql_select_db($database2);
}

这篇关于在PHP中连接到故障转移数据库的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！