如何用php写一个mysql自动备份的功能?(兩個代碼參考，未測試。)

MySQL数据自动备份并且ftp的shell文件(未测试哦)

mysql官方管理工具的下載頁面

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[

2006/12/01 09:37 | by 小施 ]

方法一: 可以将这个脚本放进crontab，每天凌晨执行一次，自动备份

这个脚本每天最多只执行一次，而且只保留最近五天的备份在服务器上。

代码:

#!/bin/bash
#This is a ShellScript For Auto DB Backup
#Powered by aspbiz
#2004-09

#Setting
#设置数据库名，数据库登录名，密码，备份路径，日志路径，数据文件位置，以及备份方式
#默认情况下备份方式是tar，还可以是mysqldump,mysqldotcopy
#默认情况下，用root(空)登录mysql数据库，备份至/root/dbxxxxx.tgz
DBName=mysql
DBUser=root
DBPasswd=
BackupPath=/root/
LogFile=/root/db.log
DBPath=/var/lib/mysql/
#BackupMethod=mysqldump
#BackupMethod=mysqlhotcopy
#BackupMethod=tar
#Setting End

NewFile="$BackupPath"db$(date +%y%m%d).tgz
DumpFile="$BackupPath"db$(date +%y%m%d)
OldFile="$BackupPath"db$(date +%y%m%d --date='5 days ago').tgz

echo "-------------------------------------------" >> $LogFile
echo $(date +"%y-%m-%d %H:%M:%S") >> $LogFile
echo "--------------------------" >> $LogFile
#Delete Old File
if [ -f $OldFile ]
then
rm -f $OldFile >> $LogFile 2>&1
echo "[$OldFile]Delete Old File Success!" >> $LogFile
else
echo "[$OldFile]No Old Backup File!" >> $LogFile
fi

if [ -f $NewFile ]
then
echo "[$NewFile]The Backup File is exists,Can't Backup!" >> $LogFile
else
case $BackupMethod in
mysqldump)
if [ -z $DBPasswd ]
then
mysqldump -u $DBUser --opt $DBName > $DumpFile
else
mysqldump -u $DBUser -p$DBPasswd --opt $DBName > $DumpFile
fi
tar czvf $NewFile $DumpFile >> $LogFile 2>&1
echo "[$NewFile]Backup Success!" >> $LogFile
rm -rf $DumpFile
;;
mysqlhotcopy)
rm -rf $DumpFile
mkdir $DumpFile
if [ -z $DBPasswd ]
then
mysqlhotcopy -u $DBUser $DBName $DumpFile >> $LogFile 2>&1
else
mysqlhotcopy -u $DBUser -p $DBPasswd $DBName $DumpFile >>$LogFile 2>&1
fi
tar czvf $NewFile $DumpFile >> $LogFile 2>&1
echo "[$NewFile]Backup Success!" >> $LogFile
rm -rf $DumpFile
;;
*)
/etc/init.d/mysqld stop >/dev/null 2>&1
tar czvf $NewFile $DBPath$DBName >> $LogFile 2>&1
/etc/init.d/mysqld start >/dev/null 2>&1
echo "[$NewFile]Backup Success!" >> $LogFile
;;
esac
fi

echo "-------------------------------------------" >> $LogFile

方法二:

#!/usr/local/php/bin/php
<?
#auto backup mysql date use mysqldump
#author Robin(eway365@hotmail.com)

set_time_limit(0);
$pwd = "1q2w3e4r";
$dbip = "192.168.0.206";
$user = "root";
$savepath = "/db_bak/";
$save_time_limit = 60*60*2;
$old_time_for_del = 3;

if(!is_dir($savepath))
{
mkdir($savepath,0700);
mkdir($savepath."log",0700);
}

while(true)
{
$fp = fopen ($savepath."log/".date("Ymd").".log", "a");
flock($fp, LOCK_EX);

$old_dir = date("Ymd",mktime(0,0,0,date("m"),date("d")-$old_time_for_del,date("Y")));

system("rm -rf ".$savepath.$old_dir);
fwrite($fp,"rm -rf ".$savepath.$old_dir."\n");

$dir_child = date("Ymd");
if(!is_dir($savepath.$dir_child))
{
mkdir($savepath.$dir_child,0700);
fwrite($fp,"create dir ".$savepath.$dir_child."\n");
}

$filename = $savepath.$dir_child."/".date("His");
fwrite($fp,date("H:i:s")." backup starting.............\n");

system("/usr/local/mysql/bin/mysqldump -u ".$user." -p".$pwd." -h ".$dbip." billing>".$filename."_billing.sql");
system("/usr/local/mysql/bin/mysqldump -u ".$user." -p".$pwd." -h ".$dbip." door_server>".$filename."_door_server.sql");
system("/usr/local/mysql/bin/mysqldump -u ".$user." -p".$pwd." -h ".$dbip." myth_world>".$filename."_myth_world.sql");

fwrite($fp,date("H:i:s")." backup succes.................OK\n\n\n");
flock($fp,LOCK_UN);
fclose($fp);
sleep($save_time_limit);
}
?>

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