How to implement database backup in php (code)

The content of this article is about how to implement database backup (code) in PHP. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

public function dataBackup(){
        $doc_root=$_SERVER['DOCUMENT_ROOT'];
        $file_path_name=$doc_root.'/sqlbackup';　　//保存到的路径
        $name='backup_'.date('YmdHis').".sql";
        if(!file_exists($file_path_name)){
            mkdir($file_path_name,0777);
        }
        $mysqldump_url='G:\phpstudy\PHPTutorial\MySQL\bin\mysqldump.exe';//mysqldump.exe的绝对路径，安装mysql自带的有，可以搜索一下路径
        $host='127.0.0.1';//数据库所在的服务器地址
        $User='root';//数据库用户名
        $Password='root';//数据库密码
        $databaseName='kuer';//数据库名
        $process=$mysqldump_url." -h".$host." -u".$User."  -p".$Password."  ".$databaseName." >".$file_path_name."/".$name;
        $er=system($process);//system()执行外部程序，并且显示输出
        if($er!==false){
            echo json_encode('success!');
        }else{
            echo json_encode('error!');
        }
    }

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