ThinkPHP realizes database backup

1 The importance of database backup
In production environment , Data security is critical , Any loss of data can have serious consequences

The importance of database backup is mainly reflected in ：

1. Improve the high availability and disaster recoverability of the system , When the database system crashes , No data can be found without database backup
2. Use database backup to restore the database , It is the best solution to provide the minimum cost of data recovery when the database crashes , If you let users add data again , The price is too high
3. Without data, there is nothing , Database backup is a powerful means to prevent disasters

Program error ： It is inevitable that there are some mistakes in the program of database operation , Cause data loss

1. Human error ： It refers to the data destruction caused by the misoperation of the user , There may also be data loss caused by hackers' attacks on the system
2. Computer failure ： It refers to the damage of the server operating system or software running the database , It may cause data damage
3. Disk failed ： Refers to hard disk and other hardware devices that store data , It may be damaged after long-term operation , Resulting number
4. It is lost
5. disaster （ Such as fire 、 The earthquake ） And theft ： Refers to the occurrence of natural disasters, etc , It may cause data loss

In the process of using database , There are many reasons for data loss ：

Install the extension

composer require tp5er/tp5-databackup dev-master

public function asd()
    {
        $config=array(
            'path' => './Data/',// Database backup path 
            'part' => 20971520,// Database backup volume size 
            'compress' => 0,// Whether compression is enabled for database backup files  0 Uncompressed  1  Compress 
            'level' => 9 // Database backup file compression level  1 Ordinary  4  commonly  9 The highest 
        );

        $db= new Backup($config);
        $tables=$db->dataList();// obtain x Information of all tables in the database 
        foreach($tables as $k=>$v){
            $db->backup($v['name'],0);// Cycle all tables back up tables and data 
        }
        $file=$db->getFile();// Get the file name of the backed up file 
        var_dump($file);

    }

The effect is as follows