Realize DataImport and export of the data table structure, import and export
********************************************************/
//
Contains MySQL DatabaseManipulating files
//
Require_once ("mysqldb.php");
/*******************************************************
* * Class Name: MySQLdb
* * Class Number: lcq-db-003
* * Role: Database linksThe establishment, data manipulation, acquisition FieldNumber, number of record bars, etc.
* * Author: Lam Chiu flag
* * Date of writing: (2007-04-07)
********************************************************/
Class Dbmanagement implements Idbmanagement
{
//
Name of all data tables in the current database
//
Private $TablesName;
//
Default Path
//
Private $DefaultPath;
//
The name of the database currently being manipulated
//
Private $DatabaseName;
//
Objects that manipulate the database
//
Private $db;
/*******************************************************
* * Method Name: __construct
** functionDescription: Create an Dbmanagement object
* * Input parameters: $_databasename-string <要操作的数据库名,如果为空则从配置文件中读取>
* * $_defaultpath-string <存储数据的默认路径,如果为空则从配置文件中读取>
* * OUTPUT parameter: None
* * Return value: None
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
function __construct ($_databasename= "", $_defaultpath= "")//
{
Require ("config.inc.php");
if (!$_databasename) {$this->databasename= $dbName;}
else {$this->databasename=$_databasename;}
if (!$_defaultpath) {$this->defaultpath= $defaultPath;}
else {$this->defaultpath=$_defaultpath;}
$path =realpath ($this->defaultpath);
$this->defaultpath=str_replace ("", "/", $path);
$this->db=new dbfactory ();
$this->db=new mysqldb ();
}
/*******************************************************
* * Method Name: Gettablesname
* * Function Description: Get the name of all $this->database data tables
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-array < $this->tablesname: Name of all data tables for $this->database >
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
protected function Gettablesname ()
{
$result = $this->db->query ("Show Table Status");
while ($Row = $this->db->nextrecord ($result))
{
$this->tablesname[]= $Row ["Name"];
}
return $this->tablesname;
}
/*******************************************************
* * Method Name: Getdatafilename
* * Function Description: Gets the physical filename of the data file corresponding to all data tables of $this->database
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-array < $DataFilesName: the physical filename of the data file corresponding to all $this->database data tables >
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
protected function Getdatafilename ()
{
$this->gettablesname ();
$count =count ($this->gettablesname ());
for ($i =0; $i < $count; $i + +)
{
$DataFilesName []= $this->defaultpath.] /". $this->tablesname[$i].". TXT ";
echo $DataFilesName [$i];
}
return $DataFilesName;
}
/*******************************************************
* * Method Name: Savetablestructure
* * Function Description: Save the structure of the data table to the Install.sql file, the target path is $defaultpath
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-bool <返回为true表示保存成功;
<>
* * False indicates save failed >
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
protected function Savetablestructure ($text)
{
$fileName = $this->defaultpath. " /install.sql ";
if (file_exists ($fileName))
//{
Unlink ($fileName);
//}
Echo $text;
$FP =fopen ($fileName, "w+");
Fwrite ($fp, $text);
}
/*******************************************************
* * Method Name: Restoretablestructure
* * Function Description: Backup the structure of all data tables in $this->database
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-bool <返回为true表示所有数据表的结构备份成功;
<>
* * = False to indicate the structure of all or part of the data table backup failed >
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
protected function Backuptablestructure ()
{
$i = 0;
$sqlText = "";
$this->gettablesname ();
$count =count ($this->tablesname);
//
Remove the structure of all data tables
//
while ($i < $count)
{
$tableName = $this->tablesname[$i];
$result = $this->db->query ("Show create Table $tableName");
$this->db->nextrecord ($result);
//
Remove the genetic table SQL Statement
//
$sqlText. = "DROP TABLE IF EXISTS '". $tableName. " `; ";//`
$sqlText. = $this->db->getfield (1). ";";
$i + +;
}
$sqlText =str_replace ("R", "", $sqlText);
$sqlText =str_replace ("n", "", $sqlText);
$sqlText =str_replace ("'", "'", $sqlText);
$this->savetablestructure ($sqlText);
}
/*******************************************************
* * Method Name: Restoretablestructure
* * Function Description: Restore the structure of all data tables in $this->database
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-bool <返回为true表示所有数据表的结构还原成功;
<>
* = False to indicate a structural restore failure for all or part of the data table >
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
protected function Restoretablestructure ()
{
$fileName = $this->defaultpath. " /install.sql ";
if (!file_exists ($fileName)) {echo "Cannot find the table structure file, make sure you have done a backup before!"; 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);
//
The last of the array is ";", which is a useless statement,
//
for ($i =1; $i < $count; $i + +)
{
$sql = $sqlArray [$i-1]. ";";
$result = $this->db->executesql ($sql);
if (! MySQL_errno ())
{
if ($i%2==0) {echo data sheet. ( $i/2). " The structure recovers successfully!n ";}
}
Else
{
if ($i%2==0)
{
echo "Data Sheet". ($i/2). " The structural recovery failed!n ";
Exit ();
}
}
}
}
catch (Exception $e)
{
$this->db->showerror ($e->getmessage ());
$this->db->close ();
return false;
}
}
/*******************************************************
* * Method Name: ImportData
* * Function Description: Import data from all data tables in $this->database from a. txt file with the same name, the source path is $defaultpath
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-bool <返回为true表示所有数据表的数据导入成功;
<>
* = False indicates data import failure for all or part of the data table >
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
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 "Data import successful!";
}
catch (Exception $e)
{
$this->db->showerror ($e->getmessage ());
return false;
Exit ();
}
}
}
/*******************************************************
* * Method Name: ExportData
* * Function Description: Export data from all data tables in $this->database to a. txt file with the same name, the destination path is $defaultpath
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-bool <返回为true表示所有数据表的数据导出成功;
<>
* * False indicates data export failure for all or part of the data table >
* * Author: Lam Chiu flag
* * Date: 2007-04-09
* * Modified by Person:
* * Date:
********************************************************/
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 "Data export succeeded!";
}
catch (Exception $e)
{
$this->db->showerror ($e->getmessage ());
return false;
Exit ();
}
}
/*******************************************************
* * Method Name: BackupDatabase
* * Function Description: Backup the structure and data of all data tables in $this->database
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-bool <返回为true表示所有数据表的数据库备份成功;
<>
* * False indicates database backup failure for all or part of the data table >
* * Author: Lam Chiu flag
* * Date: 2007-04-10
* * Modified by Person:
* * Date:
********************************************************/
function BackupDatabase ()
{
Try
{
$this->backuptablestructure ();
$this->exportdata ();
return true;
}
catch (Exception $e)
{
$this->db->showerror ($e->getmessage ());
return false;
Exit ();
}
}
/*******************************************************
* * Method Name: Restoredatabase
* * Function Description: Restore the structure and data of all data tables in $this->database
* * Input parameters: None
* * OUTPUT parameter: None
* * return value:-bool <返回为true表示所有数据表的数据库还原成功;
<>
* * False indicates database restore failure for all or part of the data table >
* * Author: Lam Chiu flag
* * Date: 2007-04-10
* * Modified by Person:
* * Date:
********************************************************/
function Restoredatabase ()
{
Try
{
$this->restoretablestructure ();
$this->importdata ();
return true;
}
catch (Exception $e)
{
$this->db->showerror ($e->getmessage ());
return false;
Exit ();
}
}
}
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http://www.bkjia.com/PHPjc/444994.html www.bkjia.com true http://www.bkjia.com/PHPjc/444994.html techarticle Import and export of data, data table structure Import and export ********************************************************/////include MySQL database operation file//Require_ Once (Mysql ...
