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備份:表結構和數據完全分開，默認有一個文件會記錄所有表的結構，然后表中數據的備份 如果超過分卷的大小則會分成多個文件，不然則一個文件，參考了別人的代碼，不過寫的嘛，差強 人意，以后慢慢改吧。。。
代碼如下：
復制代碼 代碼如下:
<?php
/*
* Created on 2014
* Link for 527891885@qq.com
* This is seocheck backup class
*/
class DbBackUp {
private $conn;
private $dbName;
private $host;
private $tag = '_b';
//構造方法 鏈接數據庫
public function __construct($host='localhost', $dbUser='root', $dbPwd='', $dbName="seocheck", $charset='utf8') {
@ob_start();
@set_time_limit(0);
$this->conn = mysql_connect($host, $dbUser, $dbPwd, true);
if(!$this->conn) die("數據庫系統連接失?。?);
mysql_query("set names ".$charset, $this->conn);
mysql_select_db($dbName, $this->conn) or die("數據庫連接失敗！");
$this->host = $host;
$this->dbName = $dbName;
}
//獲取數據庫所有表名
public function getTableNames () {
$tables = array();
$result = mysql_list_tables($this->dbName, $this->conn);
if(!$result) die('MySQL Error: ' . mysql_error());
while($row = mysql_fetch_row($result)) {
$tables[] = $row[0];
}
return $tables;
}
//獲取數據庫表的字段信息
public function getFieldsByTable ($table) {
$fields = array();
$str = '';
$res = mysql_query("SHOW CREATE TABLE `{$table}`", $this->conn);
if(!$res) die('MySQL Error: ' . mysql_error());
while($rows = mysql_fetch_assoc($res)) {
$str = str_replace("CREATE TABLE `{$table}` (", "", $rows['Create Table']);//DROP TABLE IF EXISTS `{$table}`/n
$str = "--/n-- Table structure for table `{$table}`/n--/n/nCREATE TABLE IF NOT EXISTS `{$table}` ( ".$str;
$str = str_replace(",", ", ", $str);
$str = str_replace("`) ) ENGINE=InnoDB ", "`)/n ) ENGINE=InnoDB ", $str);
$str .=";/n/n";
//$str = $str.";/n/n--/n-- Dumping data for table `{$table}`/n--/n/n";
$fields[$rows['Table']] = $str;
}
return $fields;
}
//獲取表中的數據
public function getDataByTable($table) {
$data = array();
$str = '';
$res = mysql_query("SELECT * FROM `{$table}`", $this->conn);
if(!$res) die('MySQL Error: ' . mysql_error());
while($rows = mysql_fetch_assoc($res)) {
if(!empty($rows)) {
$data[] = $rows;
}
}
$keys = array_keys($data[0]);
foreach ($keys as $k=>$v) {
$keys[$k] = '`'.$v.'`';
}
$key = join(', ', $keys);
$str = "INSERT INTO `{$table}` ({$key}) VALUES/n";
foreach ($data as $k=>$v) {
$str.="(";
while (list($key, $val) = each($v)) {
if(!is_numeric($val)) {
$str.= "'".$val."', ";
} else {
$str.= $val.', ';
}
}
$str = substr($str, 0, -2);// 后邊有空格 所以從-2 開始截取
if($k+1 == count($data)) {
$str.=");/n/n-- --------------------------------------------------------/n/n";
} else {
$str.="),/n";
}
}
return $str;
}
//備份數據庫
public function getBackUpDataByTable ($tables, $path='', $fileName = 'seocheck', $subsection = '2') {
if(empty($tables)) $this->_showMsg('未能指定要備份的表!!!', true);
$page = 0;//卷數
$path = empty($path) ? $_SERVER['DOCUMENT_ROOT'].'/core/Runtime/Data/'.$fileName.'Demo/' : $path;
if(!file_exists($path)) {
mkdir($path, 0777, true);
}
$mysql_info = $this->_retrieve();
$fieldsByTable = array();
if(is_array($tables)) {
$this->_showMsg('開始備份,數據正在初始化中,請勿關閉瀏覽器...');
$fw = $this->writeFileByBackUpData($path.$this->dbName.'_table.sql', $mysql_info, $method="ab+");
if($fw !== false) {
$this->_showMsg('備份數據庫基本信息成功。。。');
}
foreach ($tables as $table) {
$tableInfo = $this->getFieldsByTable($table);
if(!empty($tableInfo)) {
$this->_showMsg('獲取表['.$table.']結構成功。。。');
$fw = $this->writeFileByBackUpData($path.$this->dbName.'_table.sql', $tableInfo[$table], $method="ab+");
if($fw === false) {
$this->_showMsg('備份表['.$table.']結構失敗。。。', true);
} else {
$this->_showMsg('備份表['.$table.']結構成功,開始獲取數據。。。');
};
} else {
$this->_showMsg('獲取數據庫['.$this->dbName.']表結構失敗,請稍后再試！。。。', true);
}
$this->_insertSqlByTableForAll($path, $table, $subsection);
}
} else {
$this->_showMsg('開始備份,數據正在初始化中,請勿關閉瀏覽器...');
$tableInfo = $this->getFieldsByTable($tables);
if(!empty($tableInfo)) {
$this->_showMsg('獲取表['.$tables.']結構成功。。。');
$fw = $this->writeFileByBackUpData($path.$this->dbName.'_'.$tables.'_table.sql', $mysql_info.$tableInfo[$tables]);
if($fw === false) {
$this->_showMsg('備份表['.$tables.']結構失敗。。。', true);
} else {
$this->_showMsg('備份表['.$tables.']結構成功,開始獲取數據。。。');
}
} else {
$this->_showMsg('獲取表['.$tables.']結構失敗,請稍后再試！。。。', true);
}
$res = $this->_insertSqlByTableForAll($path, $tables, $subsection);
}
}
//數據庫基本信息
private function _retrieve() {
$backUp = '';
$backUp .= '--' . "/n";
$backUp .= '-- MySQL database dump' . "/n";
$backUp .= '-- Created by DbBackUp class, Power By chujiu. ' . "/n";
$backUp .= '--' . "/n";
$backUp .= '-- 主機: ' . $this->host . "/n";
$backUp .= '-- 生成日期: ' . date ( 'Y' ) . ' 年 ' . date ( 'm' ) . ' 月 ' . date ( 'd' ) . ' 日 ' . date ( 'H:i' ) . "/n";
$backUp .= '-- MySQL版本: ' . mysql_get_server_info () . "/n";
$backUp .= '-- php 版本: ' . phpversion () . "/n";
$backUp .= "/n/n";
$backUp .= "SET SQL_MODE='NO_AUTO_VALUE_ON_ZERO';/n";
$backUp .= "SET time_zone = '+00:00';/n/n";
$backUp .= "/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;/n";
$backUp .= "/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;/n";
$backUp .= "/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;/n";
$backUp .= "/*!40101 SET NAMES utf8*/;/n/n";
$backUp .= "--/n-- Database: `{$this->dbName}`/n--/n/n-- --------------------------------------------------------/n/n";
return $backUp;
}
/**
* 插入單條記錄
*
* @param string $row
*/
private function _insertSql($row, $table) {
// sql字段逗號分割
$insert = '';
$insert .= "INSERT INTO `" . $table . "` VALUES(";
foreach($row as $key=>$val) {
$insert .= "'".$val."',";
}
$insert = substr($insert, 0 ,-1);
$insert .= ");" . "/n";
return $insert;
}
/**
* 生成一個表的inser語句
* @param string $table
* @param string $subsection 分卷大小
*/
private function _insertSqlByTableForAll($path, $table, $subsection) {
$i = 0;
$insertSqlByTable = '';
$res = mysql_query("SELECT * FROM `{$table}`", $this->conn);
if(!$res) die('MySQL Error: ' . mysql_error());
while($rows = mysql_fetch_assoc($res)) {
$insertSqlByTable .= $this->_insertSql($rows, $table);
$size = strlen($insertSqlByTable);
if($size > $subsection*1024*1024) {
$fw = $this->writeFileByBackUpData($path.$table.$i.$this->tag.'.sql', $insertSqlByTable);
if($fw === false) $this->_showMsg('數據庫表['.$table.'],卷 '.$i.' 寫入文件失敗,請稍后再試?。。?,true);
$this->_showMsg('數據庫表['.$table.'],卷 '.$i.' 備份成功！備份文件:[ '.$path.$table.$i.$this->tag.'.sql ]');
$insertSqlByTable = '';
$i+=1;
}
}
// insertSqlByTable大小不夠分卷大小
if ($insertSqlByTable != "") {
$fw = $this->writeFileByBackUpData($path.$table.$this->tag.'.sql', $insertSqlByTable);
if($fw === false) $this->_showMsg('數據庫表['.$table.']寫入文件失敗,請稍后再試！??！備份文件:[ '.$path.$table.$this->tag.'.sql ]',true);
$this->_showMsg('數據庫表['.$table.'] 備份成功！備份文件:[ '.$path.$table.$this->tag.'.sql ]');
}
$this->_showMsg('數據庫表['.$table.']全部備份成功！');
}
// 寫入文件
public function writeFileByBackUpData($fileName, $data, $method="rb+", $iflock=1, $check=1, $chmod=1){
$check && @strpos($fileName, '..')!==false && exit('Forbidden');
@touch($fileName);
$handle = @fopen($fileName, $method);
if($iflock) {
@flock($handle,LOCK_EX);
}
$fw = @fwrite($handle,$data);
if($method == "rb+") ftruncate($handle, strlen($data));
fclose($handle);
$chmod && @chmod($fileName,0777);
return $fw;
}
/**
* path: 生成壓縮包的路徑
* fileName : 要壓縮的文件名 通常和path 同一目錄
*/
public function createZipByBackUpFile($path) {
$db_base_files = $this->getFileByBackUpDir($path);
if(!empty($db_base_files)) {
$zip = new ZipArchive;
if($zip->open($path.$this->dbName.date('Ymd').'.zip', ZipArchive::CREATE | ZIPARCHIVE::OVERWRITE) !== true)
die ("cannot open".$this->dbName.date('Ymd')."zip for writing.");
foreach ($db_base_files as $key => $value) {
if(is_file($value)) {
$file_name = basename($value);
$info[] = $zip->addFile($value, $file_name);// 避免壓縮包里有文件的路徑
}
}
$zip->close();
if(file_exists($path.$this->dbName.date('Ymd').'.zip'))
foreach ($db_base_files as $val) {
unlink($val);
}
if(count(array_filter($info)) > 0) return true;
}
return false;
}
//獲取文件
public function getFileByBackUpDir($path) {
$info = array();
$db_base_files = array();
if( @file_exists($path) && is_dir($path) ) {
if ($dh = opendir($path)) {
while (($file = readdir($dh)) !== false) {
if($file != '.' && $file != '..') {
if( strripos($file, 'seocheck') !== false ) {
$db_base_files[] = $path.$file;
}
}
}
closedir($dh);
}
}
return $db_base_files;
}
/**
* @path: 生成壓縮包的路徑
* @fileName : 要解壓的文件名 默認解壓到path 目錄
*/
public function uncompressZip($path, $zipName) {
$path = empty($path) ? $_SERVER['DOCUMENT_ROOT'].'/core/Runtime/Data/' : $path;
$zip = new ZipArchive;
if ($zip->open($path.$zipName) === TRUE) {
$zip->extractTo($path);
$zip->close();
return true;
} else {
return false;
}
}
//導入數據庫
public function importingDataBySqlFile () {
}
// 及時輸出信息
private function _showMsg($msg,$err=false){
if($err === true) {
echo "<p style='font-size:14px;'><span style='color:red;'>ERROR: --- " . $msg . "</span></p>";exit;
}
echo "<p style='font-size:14px;'><span style='color:green;'>OK: --- " . $msg . "</span></p>";
}
// 鎖定數據庫，以免備份或導入時出錯
private function lock($table, $op = "WRITE") {
if (mysql_query ( "lock tables " . $table . " " . $op ))
return true;
else
return false;
}
// 解鎖
private function unlock() {
if (mysql_query ( "unlock tables" ))
return true;
else
return false;
}
// 析構
public function __destruct() {
if($this->conn){
mysql_query ( "unlock tables", $this->conn );
mysql_close ( $this->conn );
}
}
}
?>
php技術：php實例分享之mysql數據備份，轉載需保留來源！
鄭重聲明：本文版權歸原作者所有，轉載文章僅為傳播更多信息之目的，如作者信息標記有誤，請第一時間聯系我們修改或刪除，多謝。
