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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");
}
}