我想让客户能够手动下载其数据库的备份。我正在使用 PHP 和 MySQL 对该网站进行编码。因此,管理员用户登录后,菜单中会出现一个链接,用于将 .sql 文件下载到本地计算机。我怎样才能用 PHP 来完成这个任务?
尝试从 PHP 备份数据库可能会变得混乱,最好让 MySql 处理这个问题,告诉 mysql 执行此操作的最佳方法是使用 shell 脚本:
#!/bin/bash
# Shell script to backup MySql database
# To backup Nysql databases file to /backup dir and later pick up by your
# script. You can skip few databases from backup too.
# For more info please see (Installation info):
# http://www.cyberciti.biz/nixcraft/vivek/blogger/2005/01/mysql-backup-script.html
# Last updated: Aug - 2005
# --------------------------------------------------------------------
# This is a free shell script under GNU GPL version 2.0 or above
# Copyright (C) 2004, 2005 nixCraft project
# Feedback/comment/suggestions : http://cyberciti.biz/fb/
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
MyUSER="SET-MYSQL-USER-NAME" # USERNAME
MyPASS="SET-PASSWORD" # PASSWORD
MyHOST="localhost" # Hostname
# Linux bin paths, change this if it can not be autodetected via which command
MYSQL="$(which mysql)"
MYSQLDUMP="$(which mysqldump)"
CHOWN="$(which chown)"
CHMOD="$(which chmod)"
GZIP="$(which gzip)"
# Backup Dest directory, change this if you have someother location
DEST="/backup"
# Main directory where backup will be stored
MBD="$DEST/mysql"
# Get hostname
HOST="$(hostname)"
# Get data in dd-mm-yyyy format
NOW="$(date +"%d-%m-%Y")"
# File to store current backup file
FILE=""
# Store list of databases
DBS=""
# DO NOT BACKUP these databases
IGGY="test"
[ ! -d $MBD ] && mkdir -p $MBD || :
# Only root can access it!
$CHOWN 0.0 -R $DEST
$CHMOD 0600 $DEST
# Get all database list first
DBS="$($MYSQL -u $MyUSER -h $MyHOST -p$MyPASS -Bse 'show databases')"
for db in $DBS
do
skipdb=-1
if [ "$IGGY" != "" ];
then
for i in $IGGY
do
[ "$db" == "$i" ] && skipdb=1 || :
done
fi
if [ "$skipdb" == "-1" ] ; then
FILE="$MBD/$db.$HOST.$NOW.gz"
# do all inone job in pipe,
# connect to mysql using mysqldump for select mysql database
# and pipe it out to gz file in backup dir :)
$MYSQLDUMP -u $MyUSER -h $MyHOST -p$MyPASS $db | $GZIP -9 > $FILE
fi
done
然后你告诉 php 告诉操作系统执行这个脚本并等待它完成,这通常是通过exec
or system
例如:
exec('/path/to/backup/script.sh');
然后,您只需将脚本创建的文件发送到该用户的浏览器即可。
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