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淺析php常用數(shù)據(jù)庫備份類(2)_PHP教程

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推薦:淺析php實(shí)現(xiàn)大文件上傳源代碼
一個(gè)比較 經(jīng)典的php大文件上傳源代碼,可成功運(yùn)行. functionfunction_upload($name,$newname=,$dir=upload) { global$_FILES,$ext; $return=; $time=time(); $upload=trim($_FILES[$name][’tmp_name’]); $upload_name=trim($_FILES[$name][’name’])


/*******************************************************
**方 法 名:RestoreTableStructure
**功能描述:還原$this->Database中所有數(shù)據(jù)表的結(jié)構(gòu)
**輸入?yún)?shù):無         
**輸出參數(shù):無
**返 回 值:- bool<返回為true表示所有數(shù)據(jù)表的結(jié)構(gòu)還原成功;
**                為false表示全部或部分?jǐn)?shù)據(jù)表的結(jié)構(gòu)還原失敗>
**作    者:林超旗
**日    期:2007-04-09
**修 改 人:
**日    期:
********************************************************/        
        protected function RestoreTableStructure()
        {
                $fileName=$this->DefaultPath."/Install.sql";
                if(!file_exists($fileName)){echo "找不到表結(jié)構(gòu)文件,請確認(rèn)你以前做過備份!";exit;}
                $fp=fopen($fileName,"r");
                
                $sqlText=fread($fp,filesize($fileName));
                //$sqlText=str_replace("\r","",$sqlText);
                //$sqlText=str_replace("\n","",$sqlText);                
                $sqlArray=explode("; ",$sqlText);
                try 
                {
                        $count=count($sqlArray);
                        //
                        //數(shù)組的最后一個(gè)為";",是一個(gè)無用的語句,
                        //
                        for($i=1;$i<$count;$i++)
                        {
                                $sql=$sqlArray[$i-1].";";
                                $result=$this->db->ExecuteSQL($sql);
                                if(!mysql_errno())
                                {
                                        if($i%2==0){echo "數(shù)據(jù)表".($i/2)."的結(jié)構(gòu)恢復(fù)成功!\n";}
                                }
                                else 
                                {
                                        if($i%2==0)
                                        {
                                                echo "數(shù)據(jù)表".($i/2)."的結(jié)構(gòu)恢復(fù)失敗!\n";
                                                exit();
                                        }
                                }
                        }
                }
                catch(Exception $e)
                {
                        $this->db->ShowError($e->getMessage());
                        $this->db->Close();
                        return false;
                }
        }
        
/*******************************************************
**方 法 名:ImportData
**功能描述:導(dǎo)入$this->Database中所有數(shù)據(jù)表的數(shù)據(jù)從與其同名的.txt文件中,源路徑為$DefaultPath
**輸入?yún)?shù):無         
**輸出參數(shù):無
**返 回 值:- bool<返回為true表示所有數(shù)據(jù)表的數(shù)據(jù)導(dǎo)入成功;
**                為false表示全部或部分?jǐn)?shù)據(jù)表的數(shù)據(jù)導(dǎo)入失敗>
**作    者:林超旗
**日    期:2007-04-09
**修 改 人:
**日    期:
********************************************************/
        function ImportData()
        {
                $DataFilesName=$this->GetDataFileName();
                $count=count($this->TablesName);
                //$this->db->ExecuteSQL("set character set gbk");
                for ($i=0;$i<$count;$i++)
                {
                        //$DataFilesName[$i]=str_replace("\\","/",$DataFilesName[$i])
                        //echo $DataFilesName[$i];
                        $sqlLoadData="load data infile ’".$DataFilesName[$i]."’  into table ".$this->TablesName[$i];
                        $sqlCleanData="delete from ".$this->TablesName[$i];
                        //echo $sql."\n";
                        try 
                        {
                                //$this->db->ExecuteSQL("set character set utf8");
                                //$this->db->ExecuteSQL("SET NAMES ’utf8’");
                                $this->db->ExecuteSQL($sqlCleanData);
                                $this->db->ExecuteSQL($sqlLoadData);
                                return true;
                                //echo "數(shù)據(jù)導(dǎo)入成功!";
                        }
                        catch (Exception $e)
                        {
                                $this->db->ShowError($e->getMessage());
                                return false;
                                exit();
                        }
                }        
        }
        
/*******************************************************
**方 法 名:ExportData
**功能描述:導(dǎo)出$this->Database中所有數(shù)據(jù)表的數(shù)據(jù)到與其同名的.txt文件中,目標(biāo)路徑為$DefaultPath
**輸入?yún)?shù):無         
**輸出參數(shù):無
**返 回 值:- bool<返回為true表示所有數(shù)據(jù)表的數(shù)據(jù)導(dǎo)出成功;
**                為false表示全部或部分?jǐn)?shù)據(jù)表的數(shù)據(jù)導(dǎo)出失敗> 
********************************************************/
        function ExportData()
        {
                $DataFilesName=$this->GetDataFileName();
                $count=count($this->TablesName);
                try 
                {
                        for ($i=0;$i<$count;$i++)
                        {
                                $sql="select * from ".$this->TablesName[$i]."  into outfile ’".$DataFilesName[$i]."’";
                                if(file_exists($DataFilesName[$i]))
                                {
                                        unlink($DataFilesName[$i]);
                                }
                                //$this->db->ExecuteSQL("SET NAMES ’utf8’");
                                $this->db->ExecuteSQL($sql);
                        }
                        return true;
                        //echo "數(shù)據(jù)導(dǎo)出成功!";
                }
                catch (Exception $e)
                {
                        $this->db->ShowError($e->getMessage());
                        return false;
                        exit();
                }
        }
        
/*******************************************************
**方 法 名:BackupDatabase
**功能描述:備份$this->Database中所有數(shù)據(jù)表的結(jié)構(gòu)和數(shù)據(jù)
**輸入?yún)?shù):無         
**輸出參數(shù):無
**返 回 值:- bool<返回為true表示所有數(shù)據(jù)表的數(shù)據(jù)庫備份成功;
**                為false表示全部或部分?jǐn)?shù)據(jù)表的數(shù)據(jù)庫備份失敗>
********************************************************/        
        function BackupDatabase()
        {
                try 
                {
                        $this->BackupTableStructure();
                        $this->ExportData();
                        return true;
                }
                catch (Exception $e)
                {
                        $this->db->ShowError($e->getMessage());
                        return false;
                        exit();
                }
        }
        
/*******************************************************
**方 法 名:RestoreDatabase
**功能描述:還原$this->Database中所有數(shù)據(jù)表的結(jié)構(gòu)和數(shù)據(jù)
**輸入?yún)?shù):無         
**輸出參數(shù):無
**返 回 值:- bool<返回為true表示所有數(shù)據(jù)表的數(shù)據(jù)庫還原成功;
**                為false表示全部或部分?jǐn)?shù)據(jù)表的數(shù)據(jù)庫還原失敗>
********************************************************/        
        function RestoreDatabase()
        {
                try 
                {
                        $this->RestoreTableStructure();
                        $this->ImportData();
                        return true;
                }
                catch (Exception $e)
                {
                        $this->db->ShowError($e->getMessage());
                        return false;
                        exit();
                }                
        }
}
?> 

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來源:模板無憂//所屬分類:PHP教程/更新時(shí)間:2010-01-06
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