前台一键备份数据库+PHP实现方式

一、实现思路

1、单击备份按钮传递参数到后台，ajax实现：

function backupDatabase(){var back = 'backupDatabase';$.ajax({url:'system_backup.php?do=backupDatabase',type:'POST',data:back,dataType:'json',beforeSend:function(){interval=window.setInterval(function(){var text = $("#backupstate2").html();if(text.length<4){$("#backupstate2").html('数据库备份中.');  }var text = $("#backupstate2").html();if (text.length < 9){$("#backupstate2").html(text + '.');                    } else {$("#backupstate2").html('数据库备份中.');             }}, 200);},success:function(data){if(data.msg=='1'){$("#backupstate2").html('数据备份完成！'); alert('备份成功.点击确定后，请立刻单击下载备份数据库!');$("#db_url").val(data.url);window.clearInterval(interval);}else{alert(data.msg); $("#backupstate2").html(''); window.clearInterval(interval);}}});
}

2、后台接受参数后进行数据库备份

header("Content-Type: text/html; charset=utf-8");
require_once('../configs/config.php');
require_once("../models/websurvey/webSurvey.class.php");
SysUser::authIsLogin("../login.php");
$user = new SysUser();
if(!empty($_GET['do'])){$do = $_GET['do'];switch($do){case "backupDatabase":$data = $_POST['back'];if('backupDatabase' == $data){// 设置SQL文件保存文件名 $cfg_dbname = 'asteriskcdrdb';$filename=date("Ymd",time())."-".$cfg_dbname.".sql"; // 获取当前页面文件路径，SQL文件就导出到指定文件夹内// $savePath = './Public/upload/DB/';$savePath = '../upload/DB/';if(!file_exists($savePath)){mkdir($savePath,0777,true);}$tmpFile = $savePath.$filename;fopen($tmpFile, "r");chmod($tmpFile,0777);/* //删除之前备份的数据$dh=opendir($savePath); if($dh){while ($file=readdir($dh)) { if($file!="." && $file!="..") { $fullpath=$savePath."/".$file; if(!is_dir($fullpath)) { unlink($fullpath); }} } closedir($dh);} //删除之前备份的数据*/// 用MySQLDump命令导出数据库$dbhost = '***.***.***.***';//主机IP地址$cfg_dbuser = 'root';//用户名$cfg_dbpwd = '******';//密码$bool_dump = exec("mysqldump -h$dbhost -u$cfg_dbuser -p$cfg_dbpwd --default-character-set=utf8 $cfg_dbname > ".$tmpFile);if(0 == $bool_dump){$bool_tar = exec("tar -zcvPf /var/spool/asterisk/monitor/system/backup/db.tar /var/spool/asterisk/monitor/upload/DB/$filename");if(0 == $bool_tar){$arr = json_encode(array('msg'=>1,'url'=>$filename));echo $arr;}else{$arr = json_encode(array('msg'=>'备份失败，请联系管理员！'));echo $arr;}}}exit;}default:break;}
}