php mysql 数据库备份程序 -php手册-php.cn

Home

php教程

php手册

php mysql 数据库备份程序

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

May 26, 2016 pm 03:22 PM

mysqlphpdatabase backup

提供一款实例的php mysql 数据库备份程序,很好方法的可以对你的数据库进行在线实时备份,这样可以保存数据库的安全,并且他是以.sql文件保存在bakdata目录还日期生成的数据库备份文件的,代码如下:

<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"> 
	<html xmlns="http://www.w3.org/1999/xhtml"> 
	<head> 
	<meta http-equiv="content-type" content="text/html; charset=utf-8" /> 
	<link type="text/css" rel="stylesheet" href="common/control.css"> 
	<script type="text/javascript" language="javascript" src="common/admin.otable.js"></script> 
	<script type="text/javascript" language="javascript" src="common/include.func.js"></script> 
	<title>数据管理</title> 
	<style type="text/css"> 
	span {padding-left:8px;} 
	</style> 
	</head> 
	<body class="contentbody"> 
	<div class="maindiv"> 
	<span class="ctitle">esweb系统数据管理</span> 
	<ul class="cmenu"> 
	 <li><a href="sql_backup.php">数据备份</a></li> 
	    <li><a href="sql_restore.php">数据还原</a></li> 
	 <li><a href="sql_optimize.php">数据优化</a> 
	</ul> 
	<div class="concontent"> 
	<?php 
	/*--------------界面--------------*/if(!$_post[&#39;act&#39;]){/*----------------------*/ 
	$msgs[]="服务器备份目录为$backup"; 
	$msgs[]="对于较大的数据表，强烈建议使用分卷备份"; 
	$msgs[]="只有选择备份到服务器，才能使用分卷备份功能"; 
	//show_msg($msgs); 
	 
	<div class="thead"><span class="left"><img  src="/static/imghwm/default1.png"  data-src="images/icon2/into.gif"  class="lazy"   align="absmiddle" / alt="php mysql 数据库备份程序 " > 如果需要备份、还原或者优化<font color="red"> 大量的数据 </font>, 推荐使用"<a href="http://www.phome.net/ebak2010/" target="_blank">帝国备份王2010</a>"</span> <span class="right"></span></div> 
	<form name="myform" method="post" action="sql_backup.php"> 
	<table cellpadding="" cellspacing="0" border="0" width="100%" class="ctable" id="otable" align="center"> 
	<tr> 
	 <th colspan="2">esweb系统数据备份</th> 
	</tr> 
	<tr> 
	 <td align="right" width="250">选择备份方式</td> 
	    <td><input type="radio" name="bfzl" value="quanbubiao" checked="checked" />备份全部数据  
	    <input type="radio" name="bfzl" value="danbiao" />备份单张表数据   
	    <select name="tablename"><option value="">请选择</option> 
	    <?php 
	    $d->query("show table status from $mysqldb"); 
	    while($d->nextrecord()){ 
	    echo "<option value=&#39;".$d->f(&#39;name&#39;)."&#39;>".$d->f(&#39;name&#39;)."</option>";} 
	     
	    </select></td> 
	</tr> 
	<tr> 
	 <td align="right">选择目标位置</td> 
	    <td><input type="radio" name="weizhi" value="server" checked="checked" />备份到服务器  
	    <input type="radio" name="weizhi" value="localpc" />备份到本地</td> 
	</tr> 
	<tr> 
	 <td align="right">使用分卷备份</td> 
	    <td><input type="checkbox" name="fenjuan" value="yes" checked="checked" /> 
	    分卷备份 <input name="filesize" type="text" value="1260" size="10" class="text2" /> k <span>(只有选择备份到服务器,才能使用分卷备份功能)</span></td> 
	</tr> 
	<tr> 
	 <td align="right">程序说明</td> 
	    <td>1.对于较大的数据表,强烈建议使用分卷备份. 
	    <br>2.只有选择备份到服务器,才能使用分卷备份功能. 
	    </td> 
	</tr> 
	<tr> 
	 <td align="center" colspan="2"><input type="submit" id="act" name="act" value="备 份" class="button" /> <input type="reset" value="重 置" class="button" /></td> 
	</tr> 
	</table> 
	</form> 
	<?php /*-------------界面结束-------------*/}/*---------------------------------*/ 
	/*----*/else{/*--------------主程序-----------------------------------------*/ 
	if($_post[&#39;weizhi&#39;]=="localpc"&&$_post[&#39;fenjuan&#39;]==&#39;yes&#39;) 
	{$msgs[]="只有选择备份到服务器，才能使用分卷备份功能"; 
	show_msg($msgs); pageend();} 
	if($_post[&#39;fenjuan&#39;]=="yes"&&!$_post[&#39;filesize&#39;]) 
	{$msgs[]="您选择了分卷备份功能，但未填写分卷文件大小"; 
	show_msg($msgs); pageend();} 
	if($_post[&#39;weizhi&#39;]=="server"&&!writeable($backup)) 
	{$msgs[]="备份文件存放目录&#39;$backup&#39;不可写，请修改目录属性"; 
	show_msg($msgs); pageend();} 
	/*----------备份全部表-------------*/if($_post[&#39;bfzl&#39;]=="quanbubiao"){/*----*/ 
	/*----不分卷*/if(!$_post[&#39;fenjuan&#39;]){/*--------------------------------*/ 
	if(!$tables=$d->query("show table status from $mysqldb")) 
	{$msgs[]="读数据库结构错误"; show_msg($msgs); pageend();} 
	$sql=""; 
	while($d->nextrecord($tables)) 
	{ 
	$table=$d->f("name"); 
	$sql.=make_header($table); 
	$d->query("select * from $table"); 
	$num_fields=$d->nf(); 
	while($d->nextrecord()) 
	{$sql.=make_record($table,$num_fields);} 
	} 
	$filename=date("ymd",time())."_all.sql"; 
	if($_post[&#39;weizhi&#39;]=="localpc") down_file($sql,$filename); 
	elseif($_post[&#39;weizhi&#39;]=="server") 
	{if(write_file($sql,$filename)) 
	$msgs[]="全部数据表数据备份完成,生成备份文件&#39;$backup/$filename&#39;"; 
	else $msgs[]="备份全部数据表失败"; 
	show_msg($msgs); 
	pageend(); 
	} 
	/*-----------------不要卷结束*/}/*-----------------------*/ 
	/*-----------------分卷*/else{/*-------------------------*/ 
	if(!$_post[&#39;filesize&#39;]) 
	{$msgs[]="请填写备份文件分卷大小"; show_msg($msgs);pageend();} 
	if(!$tables=$d->query("show table status from $mysqldb")) 
	{$msgs[]="读数据库结构错误"; show_msg($msgs); pageend();} 
	$sql=""; $p=1; 
	$filename=date("ymd",time())."_all"; 
	while($d->nextrecord($tables)) 
	{ 
	$table=$d->f("name"); 
	$sql.=make_header($table); 
	$d->query("select * from $table"); 
	$num_fields=$d->nf(); 
	while($d->nextrecord()) 
	{$sql.=make_record($table,$num_fields); 
	if(strlen($sql)>=$_post[&#39;filesize&#39;]*1000){ 
	     $filename.=("_v".$p.".sql"); 
	     if(write_file($sql,$filename)) 
	     $msgs[]="全部数据表-卷-".$p."-数据备份完成,生成备份文件&#39;$backup/$filename&#39;"; 
	     else $msgs[]="备份表-".$_post[&#39;tablename&#39;]."-失败"; 
	     $p++; 
	     $filename=date("ymd",time())."_all"; 
	     $sql="";} 
	} 
	} 
	if($sql!=""){$filename.=("_v".$p.".sql");   
	if(write_file($sql,$filename)) 
	$msgs[]="全部数据表-卷-".$p."-数据备份完成,生成备份文件&#39;$backup/$filename&#39;";} 
	show_msg($msgs); 
	/*---------------------分卷结束*/}/*--------------------------------------*/ 
	/*--------备份全部表结束*/}/*---------------------------------------------*/ 
	/*--------备份单表------*/elseif($_post[&#39;bfzl&#39;]=="danbiao"){/*------------*/ 
	if(!$_post[&#39;tablename&#39;]) 
	{$msgs[]="请选择要备份的数据表"; show_msg($msgs); pageend();} 
	/*--------不分卷*/if(!$_post[&#39;fenjuan&#39;]){/*-------------------------------*/ 
	$sql=make_header($_post[&#39;tablename&#39;]); 
	$d->query("select * from ".$_post[&#39;tablename&#39;]); 
	$num_fields=$d->nf(); 
	while($d->nextrecord()) 
	{$sql.=make_record($_post[&#39;tablename&#39;],$num_fields);} 
	$filename=date("ymd",time())."_".$_post[&#39;tablename&#39;].".sql"; 
	if($_post[&#39;weizhi&#39;]=="localpc") down_file($sql,$filename); 
	elseif($_post[&#39;weizhi&#39;]=="server") 
	{if(write_file($sql,$filename)) 
	$msgs[]="表-".$_post[&#39;tablename&#39;]."-数据备份完成,生成备份文件&#39;$backup/$filename&#39;"; 
	else $msgs[]="备份表-".$_post[&#39;tablename&#39;]."-失败"; 
	show_msg($msgs); 
	pageend(); 
	} 
	/*----------------不要卷结束*/}/*------------------------------------*/ 
	/*----------------分卷*/else{/*--------------------------------------*/ 
	if(!$_post[&#39;filesize&#39;]) 
	{$msgs[]="请填写备份文件分卷大小"; show_msg($msgs);pageend();} 
	$sql=make_header($_post[&#39;tablename&#39;]); $p=1;  
	$filename=date("ymd",time())."_".$_post[&#39;tablename&#39;]; 
	$d->query("select * from ".$_post[&#39;tablename&#39;]); 
	$num_fields=$d->nf(); 
	while ($d->nextrecord())  
	{  
	    $sql.=make_record($_post[&#39;tablename&#39;],$num_fields); 
	      if(strlen($sql)>=$_post[&#39;filesize&#39;]*1000){ 
	     $filename.=("_v".$p.".sql"); 
	     if(write_file($sql,$filename)) 
	     $msgs[]="表-".$_post[&#39;tablename&#39;]."-卷-".$p."-数据备份完成,生成备份文件&#39;$backup/$filename&#39;"; 
	     else $msgs[]="备份表-".$_post[&#39;tablename&#39;]."-失败"; 
	     $p++; 
	     $filename=date("ymd",time())."_".$_post[&#39;tablename&#39;]; 
	     $sql="";} 
	} 
	if($sql!=""){$filename.=("_v".$p.".sql");   
	if(write_file($sql,$filename)) 
	$msgs[]="表-".$_post[&#39;tablename&#39;]."-卷-".$p."-数据备份完成,生成备份文件&#39;$backup/$filename&#39;";} 
	show_msg($msgs); 
	/*----------分卷结束*/}/*--------------------------------------------------*/ 
	/*----------备份单表结束*/}/*----------------------------------------------*/ 
	/*---*/}/*-------------主程序结束------------------------------------------*/ 
	function write_file($sql,$filename) 
	{ 
	$re=true; 
	global $backup; 
	if(!@$fp=fopen($backup."/".$filename,"w+")) {$re=false; echo "failed to open target file";} 
	if(!@fwrite($fp,$sql)) {$re=false; echo "failed to write file";} 
	if(!@fclose($fp)) {$re=false; echo "failed to close target file";} 
	return $re; 
	} 
	function down_file($sql,$filename) 
	{ 
	ob_end_clean(); 
	header("content-encoding: none"); 
	header("content-type: ".(strpos($_server[&#39;http_user_agent&#39;], &#39;msie&#39;) ? &#39;application/octetstream&#39; : &#39;application/octet-stream&#39;)); 
	    
	header("content-disposition: ".(strpos($_server[&#39;http_user_agent&#39;], &#39;msie&#39;) ? &#39;inline; &#39; : &#39;attachment; &#39;)."filename=".$filename); 
	    
	header("content-length: ".strlen($sql)); 
	header("pragma: no-cache"); 
	    
	header("expires: 0"); 
	echo $sql; 
	$e=ob_get_contents(); 
	ob_end_clean(); 
	} 
	function writeable($dir) 
	{ 
	if(!is_dir($dir)) { 
	@mkdir($dir, 0777); 
	} 
	if(is_dir($dir))  
	{ 
	if($fp = @fopen("$dir/test.test", &#39;w&#39;)) 
	    { 
	@fclose($fp); 
	@unlink("$dir/test.test"); 
	$writeable = 1; 
	}  
	else { 
	$writeable = 0; 
	} 
	} 
	return $writeable; 
	} 
	function make_header($table) 
	{global $d; 
	$sql="drop table if exists ".$table." "; 
	$d->query("show create table ".$table); 
	$d->nextrecord(); 
	$tmp=preg_replace("/ /","",$d->f("create table")); 
	$sql.=$tmp." "; 
	return $sql; 
	} 
	function make_record($table,$num_fields) 
	{global $d; 
	$comma=""; 
	$sql .= "insert into ".$table." values("; 
	for($i = 0; $i < $num_fields; $i++)  
	{$sql .= ($comma."&#39;".mysql_escape_string($d->record[$i])."&#39;"); $comma = ",";} 
	$sql .= ") "; 
	return $sql; 
	} 
	function show_msg($msgs) 
	{ 
	$title="提示："; 
	echo "<table width=&#39;100%&#39; border=&#39;0&#39; cellpadding=&#39;0&#39; cellspacing=&#39;0&#39;>"; 
	echo "<tr><td>".$title."</td></tr>"; 
	echo "<tr><td><br><ul>"; 
	while (list($k,$v)=each($msgs)) 
	{ 
	echo "<li>".$v."</li>"; 
	} 
	echo "</ul></td></tr></table>"; 
	} 
	function pageend() 
	{ 
	exit(); 
	} 
	 
	</div><br /><br /> 
	</div> 
	</div> 
	</body> 
	</html> 
	class db{ 
	var $linkid; 
	var $sqlid; 
	var $record; 
	function db($host="",$username="",$password="",$database="") 
	{ 
	if(!$this->linkid)    @$this->linkid = mysql_connect($host, $username, $password) or die("连接服务器失败."); 
	@mysql_select_db($database,$this->linkid) or die("无法打开数据库"); 
	return $this->linkid;} 
	function query($sql) 
	{if($this->sqlid=mysql_query($sql,$this->linkid)) return $this->sqlid; 
	else { 
	    $this->err_report($sql,mysql_error); 
	return false;} 
	} 
	function nr($sql_id="") 
	{if(!$sql_id) $sql_id=$this->sqlid; 
	return mysql_num_rows($sql_id);} 
	function nf($sql_id="") 
	{if(!$sql_id) $sql_id=$this->sqlid; 
	return mysql_num_fields($sql_id);} 
	function nextrecord($sql_id="") 
	{if(!$sql_id) $sql_id=$this->sqlid; 
	if($this->record=mysql_fetch_array($sql_id))    return $this->record; 
	else return false; 
	} 
	function f($name) 
	{ 
	if($this->record[$name]) return $this->record[$name]; 
	else return false; 
	} 
	function close() {mysql_close($this->linkid);} 
	function lock($tblname,$op="write") 
	{if(mysql_query("lock tables ".$tblname." ".$op)) return true; else return false;} 
	function unlock() 
	{if(mysql_query("unlock tables")) return true; else return false;} 
	function ar() { 
	      return @mysql_affected_rows($this->linkid); 
	    } 
	function i_id() { 
	    return mysql_insert_id(); 
	} 
	function err_report($sql,$err) 
	{ 
	echo "mysql查询错误<br>"; 
	echo "查询语句：".$sql."<br>"; 
	echo "错误信息：".$err; 
	}//开源代码phprm.com 
	/****************************************类结束***************************/ 
	 
	global $mysqlhost, $mysqluser, $mysqlpwd, $mysqldb, $backup; 
	$mysqlhost = $mydbhost;          //host name 
	$mysqluser = $mydbuser;          //login name 
	$mysqlpwd = $mydbpw;             //password 
	$mysqldb = $mydbname;            //name of database 
	$d=new db($mysqlhost,$mysqluser,$mysqlpwd,$mysqldb); 
	$d->query("set names &#39;utf8&#39;");

本文链接:

收藏随意^^请保留教程地址.

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

php怎么把负数转为正整数Apr 19, 2022 pm 08:59 PM

php把负数转为正整数的方法：1、使用abs()函数将负数转为正数，使用intval()函数对正数取整，转为正整数，语法“intval(abs($number))”；2、利用“~”位运算符将负数取反加一，语法“~$number + 1”。

php怎么实现几秒后执行一个函数Apr 24, 2022 pm 01:12 PM

实现方法：1、使用“sleep(延迟秒数)”语句，可延迟执行函数若干秒；2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句，可延迟执行函数若干秒和纳秒；3、使用“time_sleep_until(time()+7)”语句。

php怎么除以100保留两位小数Apr 22, 2022 pm 06:23 PM

php除以100保留两位小数的方法：1、利用“/”运算符进行除法运算，语法“数值 / 100”；2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值，并保留两位小数。

php字符串有没有下标Apr 24, 2022 am 11:49 AM

php字符串有下标。在PHP中，下标不仅可以应用于数组和对象，还可应用于字符串，利用字符串的下标和中括号“[]”可以访问指定索引位置的字符，并对该字符进行读写，语法“字符串名[下标值]”；字符串的下标值（索引值）只能是整数类型，起始值为0。

php怎么根据年月日判断是一年的第几天Apr 22, 2022 pm 05:02 PM

判断方法：1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式；2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的，因此真实天数需要在此基础上加1。

php怎么读取字符串后几个字符Apr 22, 2022 pm 08:31 PM

在php中，可以使用substr()函数来读取字符串后几个字符，只需要将该函数的第二个参数设置为负值，第三个参数省略即可；语法为“substr(字符串,-n)”，表示读取从字符串结尾处向前数第n个字符开始，直到字符串结尾的全部字符。

php怎么替换nbsp空格符Apr 24, 2022 pm 02:55 PM

方法：1、用“str_replace(" ","其他字符",$str)”语句，可将nbsp符替换为其他字符；2、用“preg_replace("/(\s|\&nbsp\;||\xc2\xa0)/","其他字符",$str)”语句。

php怎么判断有没有小数点Apr 20, 2022 pm 08:12 PM

php判断有没有小数点的方法：1、使用“strpos(数字字符串,'.')”语法，如果返回小数点在字符串中第一次出现的位置，则有小数点；2、使用“strrpos(数字字符串,'.')”语句，如果返回小数点在字符串中最后一次出现的位置，则有。

See all articles

Hot AI Tools

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress images for free

Clothoff.io

AI clothes remover

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)

2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hello Kitty Island Adventure: How To Get Giant Seeds

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

How Long Does It Take To Beat Split Fiction?

4 weeks agoByDDD

R.E.P.O. Save File Location: Where Is It & How to Protect It?

4 weeks agoByDDD

Two Point Museum: All Exhibits And Where To Find Them

1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

WebStorm Mac version

Useful JavaScript development tools

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software