转载于:https://www.cnblogs.com/wydchn/articles/5007177.html
/** * 数据库备份 */ public function dbBackups($sPath='') { header("Content-type:text/html;charset=utf-8"); //配置信息 $cfg_dbhost = 'localhost'; $cfg_dbname = 'dnname'; $cfg_dbuser = 'dbuser'; $cfg_dbpwd = 'dnpass'; $cfg_db_language = 'utf8'; $to_file_name = $sPath."databases_backup.sql"; //END 配置 //链接数据库 $link = mysql_connect($cfg_dbhost,$cfg_dbuser,$cfg_dbpwd); mysql_select_db($cfg_dbname); //选择编码 mysql_query("set names ".$cfg_db_language); //数据库中有哪些表 $tables = mysql_query("SHOW TABLES FROM $cfg_dbname"); //将这些表记录到一个数组 $tabList = array(); while($row = mysql_fetch_row($tables)) { $tabList[] = $row[0]; } $sqldump = ''; //echo "运行中,请耐心等待...<br/>"; $info = "-- ----------------------------\r\n"; $info .= "-- 日期:".date("Y-m-d H:i:s",time())."\r\n"; $info .= "-- Power by 王永东博客(http://www.wangyongdong.com)\r\n"; $info .= "-- 仅用于测试和学习,本程序不适合处理超大量数据\r\n"; $info .= "-- ----------------------------\r\n\r\n"; //file_put_contents($to_file_name,$info,FILE_APPEND); $sqldump .= $info; //将每个表的表结构导出到文件 foreach($tabList as $val){ $sql = "show create table ".$val; $res = mysql_query($sql,$link); $row = mysql_fetch_array($res); $info = "-- ----------------------------\r\n"; $info .= "-- Table structure for `".$val."`\r\n"; $info .= "-- ----------------------------\r\n"; $info .= "DROP TABLE IF EXISTS `".$val."`;\r\n"; $sqlStr = $info.$row[1].";\r\n\r\n"; //追加到文件 //file_put_contents($to_file_name,$sqlStr,FILE_APPEND); $sqldump .= $sqlStr; //释放资源 mysql_free_result($res); } //将每个表的数据导出到文件 foreach($tabList as $val){ $sql = "select * from ".$val; $res = mysql_query($sql,$link); //如果表中没有数据,则继续下一张表 if(mysql_num_rows($res)<1) continue; // $info = "-- ----------------------------\r\n"; $info .= "-- Records for `".$val."`\r\n"; $info .= "-- ----------------------------\r\n"; $sqldump .= $info; //file_put_contents($to_file_name,$info,FILE_APPEND); //读取数据 while($row = mysql_fetch_row($res)){ $sqlStr = "INSERT INTO `".$val."` VALUES ("; foreach($row as $zd){ $sqlStr .= "'".$zd."', "; } //去掉最后一个逗号和空格 $sqlStr = substr($sqlStr,0,strlen($sqlStr)-2); $sqlStr .= ");\r\n"; $sqldump .= $sqlStr; //file_put_contents($to_file_name,$sqlStr,FILE_APPEND); } //释放资源 mysql_free_result($res); $sqldump .= '\r\n'; //file_put_contents($to_file_name,"\r\n",FILE_APPEND); } $filename = 'ciblog_'. date('Ymd_His', time()).'.sql'; header('Content-Type: text/x-sql'); header("Content-Disposition:attachment;filename=".$filename); echo $sqldump; }
//将表结构导出到文件 $sql = "show create table ".$database; $res = $this->db->query($sql,$link); $row = $this->db->fetch_array($res); $info = "-- ----------------------------\r\n"; $info .= "-- Table structure for `".$database."`\r\n"; $info .= "-- ----------------------------\r\n"; $info .= "DROP TABLE IF EXISTS `".$database."`;\r\n"; $sqlStr = $info.$row[0]['Create Table'].";\r\n\r\n"; //追加到文件 //file_put_contents($to_file_name,$sqlStr,FILE_APPEND); $sqldump .= $sqlStr; // // //将表的数据导出到文件 $sql = "select * from ".$database; $res = $this->db->query($sql); $info = "-- ----------------------------\r\n"; $info .= "-- Records for `".$database."`\r\n"; $info .= "-- ----------------------------\r\n"; $sqldump .= $info; //file_put_contents($to_file_name,$info,FILE_APPEND); // //读取数据 $row = $this->db->fetch_array($res); if ($row) { foreach($row as $val){ $sqlStr = "INSERT INTO `".$database."` VALUES ("; foreach($val as $v){ $sqlStr .= "'".$v."', "; } //去掉最后一个逗号和空格 $sqlStr = substr($sqlStr,0,strlen($sqlStr)-2); $sqlStr .= ");\r\n"; $sqldump .= $sqlStr; } } //file_put_contents($to_file_name,$sqlStr,FILE_APPEND); $sqldump .= "\r\n"; //file_put_contents($to_file_name,"\r\n",FILE_APPEND); $filename = 'ciblog_'. date('Ymd_His', time()).'.sql'; header('Content-Type: text/x-sql'); header("Content-Disposition:attachment;filename=".$filename);