jsp数据库备份导出代码
jsp数据库备份导出代码
function export($tables,$sqlcompat,$sqlcharset,$sizelimit,$action,$fileid,$random,$tableid,$startfrom,$tabletype)
{
$dumpcharset = $sqlcharset ? $sqlcharset : str_replace('-', '', CHARSET);
$fileid = isset($fileid) ? $fileid : 1;
if($fileid==1 && $tables)
{
if(!isset($tables) || !is_array($tables)) showmessage('select_bak_table');
$random = mt_rand(1000, 9999);
cache_write('bakup_tables.php', $tables);
}
else
{
if(!$tables = cache_read('bakup_tables.php')) showmessage('select_bak_table');
}
if($this->db->version() > '4.1')
{
if($sqlcharset)
{
$this->db->query("SET NAMES '".$sqlcharset."';nn");
}
if($sqlcompat == 'MYSQL40')
{
$this->db->query("SET SQL_MODE='MYSQL40'");
}
elseif($sqlcompat == 'MYSQL41')
{
$this->db->query("SET SQL_MODE=''");
}
}
$tabledump = '';
$tableid = isset($tableid) ? $tableid - 1 : 0;
$startfrom = isset($startfrom) ? intval($startfrom) : 0;
for($i = $tableid; $i < count($tables) && strlen($tabledump) < $sizelimit * 1000; $i++)
{
global $startrow;
$offset = 100;
if(!$startfrom)
{
$tabledump .= "DROP TABLE IF EXISTS `$tables[$i]`;n";
$createtable = $this->db->query("SHOW CREATE TABLE `$tables[$i]` ");
$create = $this->db->fetch_row($createtable);
$tabledump .= $create[1].";nn";
if($sqlcompat == 'MYSQL41' && $this->db->version() < '4.1')
{
$tabledump = preg_replace("/TYPE=([a-zA-Z0-9]+)/", "ENGINE=\1 DEFAULT CHARSET=".$dumpcharset, $tabledump);
}
if($this->db->version() > '4.1' && $sqlcharset)
{
$tabledump = preg_replace("/(DEFAULT)*s*CHARSET=[a-zA-Z0-9]+/", "DEFAULT CHARSET=".$sqlcharset, $tabledump);
}
}
$numrows = $offset;
while(strlen($tabledump) < $sizelimit * 1000 && $numrows == $offset)
{
$rows = $this->db->query("SELECT * FROM `$tables[$i]` LIMIT $startfrom, $offset");
$numfields = $this->db->num_fields($rows);
$numrows = $this->db->num_rows($rows);
while ($row = $this->db->fetch_row($rows))
{
$comma = "";
$tabledump .= "INSERT INTO `$tables[$i]` VALUES(";
for($j = 0; $j < $numfields; $j++)
{
$tabledump .= $comma."'".mysql_escape_string($row[$j])."'";
$comma = ",";
}
$tabledump .= ");n";
}
$this->db->free_result($rows);
$startfrom += $offset;
}
$tabledump .= "n";
$startrow = $startfrom;
$startfrom = 0;
}
if(trim($tabledump))
{
$tabledump = "#bakfilen# version:COUVOLn# time:".date('Y-m-d H:i:s')."n# type:hl_databasen# email:263645928@qq.comn# sourc:http://www.u731.com/?1n# --------------------------------------------------------nnn".$tabledump;
$tableid = $i;
$filename = 'hl_'.date('Ymd').'_'.$random.'_'.$fileid.'.sql';
$fileid++;
$bakfile = PHPCMS_ROOT.'/data/bakup/'.$filename;
if(!is_writable(PHPCMS_ROOT.'/data/bakup/')) showmessage('数据无法备份到服务器！请检查 '.$bakfile.' 目录是否可写', $forward);
file_put_contents($bakfile, $tabledump);
@chmod($bakfile, 0777);
showmessage('bak_file'." $filename ".'数据库备份完毕！', '?mod='.$this->mod.'&file='.$this->file.'&action='.$action.'&sizelimit='.$sizelimit.'&sqlcompat='.$sqlcompat.'&sqlcharset='.$sqlcharset.'&tableid='.$tableid.'&fileid='.$fileid.'&startfrom='.$startrow.'&random='.$random.'&dosubmit=1&tabletype='.$tabletype);
}
else
{
cache_delete('bakup_tables.php');
showmessage('database_bak_success','?file=database&action=export');
}
}
补充：Jsp教程,Java基础 
