php備份數(shù)據(jù)庫類分享

<?php

/**

*

* @name php備份數(shù)據(jù)庫

* @param string $DbHost 連接主機

* @param string $DbUser 用戶名

* @param string $DbPwd 連接密碼

* @param string $DbName 要備份的數(shù)據(jù)庫

* @param string $saveFileName 要保存的文件名, 默認文件保存在當前文件夾中,以日期作區(qū)分

* @return Null

* @example backupMySqlData('localhost', 'root', '123456', 'YourDbName');

*

*/

function backupMySqlData($DbHost, $DbUser, $DbPwd, $DbName, $saveFileName = '')

{

header("Content-type:text/html;charset=utf-8");

error_reporting(0);

set_time_limit(0);

echo '數(shù)據(jù)備份中，請稍候......<br />';

$link = mysql_connect($DbHost, $DbUser, $DbPwd) or die('數(shù)據(jù)庫連接失敗: ' . mysql_error());

mysql_select_db($DbName) or die('數(shù)據(jù)庫連接失敗: ' . mysql_error());

mysql_query('set names utf8');

// 聲明變量

$isDropInfo = '';

$insertSQL = '';

$row = array();

$tables = array();

$tableStructure = array();

$fileName = ($saveFileName ? $saveFileName : 'MySQL_data_bakeup_') . date('YmdHis') . '.sql';

// 枚舉該數(shù)據(jù)庫所有的表

$res = mysql_query("SHOW TABLES FROM $DbName");

while ($row = mysql_fetch_row($res)) {

$tables[] = $row[0];

}

mysql_free_result($res);

// 枚舉所有表的創(chuàng)建語句

foreach ($tables as $val) {

$res = mysql_query("show create table $val", $link);

$row = mysql_fetch_row($res);

$isDropInfo = "DROP TABLE IF EXISTS `" . $val . "`;\r\n";

$tableStructure = $isDropInfo . $row[1] . ";\r\n";

file_put_contents($fileName, $tableStructure, FILE_APPEND);

mysql_free_result($res);

}

// 枚舉所有表的INSERT語句

foreach ($tables as $val) {

$res = mysql_query("select * from $val");

// 沒有數(shù)據(jù)的表不執(zhí)行insert

while ($row = mysql_fetch_row($res)) {

$sqlStr = "INSERT INTO `".$val."` VALUES (";

foreach($row as $v){

$sqlStr .= "'$v',";

}

//去掉最后一個逗號

$sqlStr = substr($sqlStr, 0, strlen($sqlStr) - 1);

$sqlStr .= ");\r\n";

file_put_contents($fileName, $sqlStr, FILE_APPEND);

}

mysql_free_result($res);

}

echo '數(shù)據(jù)備份成功！';

}

// 調(diào)用此方法

backupMySqlData('localhost', 'root', '123456', 'YouDbName');

?>

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