如何使用MySQL与PHP将数据库从联机服务器备份到脱机服务器

Question

//Assume Server 1
$conn = mysql_connect("127.0.0.1","root","");

//Assume Server 2
$conn1 = mysql_connect("127.0.0.1","root","");

//Server 1 database
mysql_select_db("db1",$conn);

//Server 2 database
mysql_select_db("db2",$conn1);

//Count number of rows from server 1 -> database -> table (tbl1)
$cnt_rw=mysql_query("select count(*) from db1.tbl1");
$cnt_n=mysql_fetch_array($cnt_rw);  

//Fetch and update row one by one
for($i=0;$i<($cnt_n['count(*)']);$i++)
{
    $one_row=mysql_query("select * from db1.tbl1 limit $i,1");
    while($one_val=mysql_fetch_array($one_row))
    {
        $one=$one_val['one'];
        $two=$one_val['two'];
        $three=$one_val['three'];
    }

    //Already exist means update else insert so am using replace query
    mysql_query("REPLACE INTO db2.tbl2(one,two,three)values('".$one."','".$two."','".$three."')");
    $one=$two=$three='';
}   

This PHP code is working properly but take a long loading time. So I want a simple query or PHP/MySQL code or any idea to get backups from the online server to the offline server.

Online and offline database fields are same.

Answer 1

Since using PHP might not be the best idea if you have large amount of data you could also use command line tools like mysqldump to get a copy of the data and put it on your local machine with the mysql cli command.

Another option might be special tools like sqlyog which help you migrating data from one server to another.

Answer 2

常见的管理解决方案是使用cron脚本，该脚本将整个db 转储到文件（理想情况下压缩到bz2），然后通过ftp，sftp，rsync将其上传到备份服务器。