tp框架简易导出数据库

类库,将以下文件放入vendor文件夹中,命名空间vendor,使用think下的model类
<?php
/**
* 描述:基于ThinkPHP框架的Mysql数据库导出类
* 日期:2012-07-15
* 作者:龚辟愚

*/
namespace Vendor;
use Think\Model;
class DBExport
{
/**
* @description 获取当前数据库的所有表名。
* @static
* @return array
*/
public function t(){
echo "a";
}
static protected function gettables()
{
$dbName=C('DB_NAME'); $result=M()->query("SHOW FULL tableS FROM `{$dbName}` WHERE table_Type = 'BASE table'"); foreach ($result as $v){
$tbArray[]=$v['tables_in_'.C('DB_NAME')];
}
return $tbArray; }
static protected function getViews()
{
$dbName=C('DB_NAME');
$result=M()->query("SHOW FULL tableS FROM `{$dbName}` WHERE table_Type = 'VIEW'"); foreach ($result as $v){
$tbArray[]=$v['tables_in_'.C('DB_NAME')];
}
return $tbArray;
} /**
* @description 导出SQL数据，但不包含表创建代码。
* @static
* @return string
*/
static public function ExportAllData()
{
$tables = self::gettables();
$arrAll = array(
"SET FOREIGN_KEY_CHECKS=0;",
self::BuildAllTriggerDropSql(),
self::BuildtableSql(),
self::BuildViewSql()
);
$tbl = new Model();
foreach($tables as $table)
{
$arrAll[]="\r\nDELETE FROM {$table};"; /*
$rs = $tbl->query("SHOW COLUMNS FROM {$table}");
$arrFields = array();
foreach ($rs as $k=>&$v){
$arrFields[] = "`{$v['Field']}`"; } $sqlFields = implode($arrFields,",");
*/
$rs=$tbl->query("select * from `{$table}`");
foreach ($rs as $k=>&$v){
$arrValues = array();
foreach($v as $key=>$val)
{
if(is_numeric($val)){
$arrValues[]=$val;
}else if(is_null($val)){
$arrValues[]='NULL';
}else{
$arrValues[]="'".addslashes($val)."'";
}
}
$arrAll[] = "INSERT INTO `{$table}` VALUES (".implode(',',$arrValues).");";
}
}
$arrAll[]=self::BuildTriggerCreateSql();
return implode("\r\n",$arrAll);
} static protected function BuildtableSql()
{
$tables = self::gettables();
$arrAll = array();
foreach($tables as &$val){
$rs = M()->query("SHOW CREATE table `{$val}`"); $tbSql = preg_replace("#CREATE(.*)\\s+table#","CREATE table",$rs[0]['Create table']); $arrAll[] = "DROP table IF EXISTS `{$rs[0]['table']}`;\r\n{$tbSql};\r\n";
} return implode("\r\n",$arrAll);
} static protected function BuildViewSql()
{
$views = self::getViews();
$arrAll = array();
foreach($views as &$val){
$rs = M()->query("SHOW CREATE VIEW `{$val}`");
$tbSql = preg_replace("#CREATE(.*)\\s+VIEW#","CREATE VIEW",$rs[0]['Create View']); $arrAll[] = "DROP VIEW IF EXISTS `{$rs[0]['View']}`;\r\n{$tbSql};\r\n";
}
return implode("\r\n",$arrAll);
}
/**
* @description 如果存在触发器，生成删除代码。原因是:插入数据的时候可能会受到触发器影响。
* @static
* @return string
*/
static public function BuildAllTriggerDropSql()
{
$rs = M()->query("show triggers");
$arrAll = array();
foreach ($rs as $k=>&$v)
{
$arrSql = array(
'DROP TRIGGER IF EXISTS `',$v['Trigger'],'`;'
); $arrAll[] = implode('',$arrSql);
}
return implode("\r\n",$arrAll);
} /**
* @description 生成所有触发器的创建代码。
* @static
* @return string
*/
static protected function BuildTriggerCreateSql()
{
$rs = M()->query("show triggers");
$arrAll = array();
foreach ($rs as $k=>&$v)
{
$arrSql = array(
'CREATE TRIGGER `',$v['Trigger'],'` ',$v['Timing'],' ',$v['Event'],' ON `',
$v['table'],'` FOR EACH ROW ',$v['Statement'],';'
); $arrAll[] = implode('',$arrSql);
}
return implode("\r\n",$arrAll);
}
}

//调用方法 public function tiaoshi(){
header('Content-type: text/plain; charset=UTF-8');
$dbName = C('DB_NAME');
header("Content-Disposition: attachment; filename=\"{$dbName}.sql\"");
vendor('DBExport','','.class.php');echo \vendor\DBExport::ExportAllData();
}