PHPMyBackup - A PHP MySQL differential backup script

A PHP MySQL differential backup script

PHPMyBackup is a PHP script designed for backing up an entire MySQL server on the commandline. What makes it unique is it only uses use differential methods to dump only the changes as it keeps a local copy of all the synced databases & tables.

Software features

Only download changed/altered tables (checksum)
Allows specifying subset of databases for backups (supports wildcard)
Allows skipping of specified databases from backups (supports wildcard)
Allows skipping of specified tables or table-data (supports wildcard)
Integrates with mysqldump client for individual sql dumps
Backup rotation

Limitations

No database locking during backup. because a separate `mysqldump` is called for every table download, only table locking is used.
This has been tested in several environments, but your own full testing is always advised!

Requirements

A MySQL user on the server with ‘SELECT’ & ‘LOCK TABLES’ permissions
tar with xz support (used for compressing backups)
PHP CLI on backup host with MySQLi support
mysqldump (used for actual table dumping)

Usage Example

require('phpmybackup.php');
$db = new MYSQL_DUMP;
$db->dbhost = 'server.com';
$db->dbuser = 'backup-user';
$db->dbpwd = 'backup-password';
$db->backupsToKeep = 30;
$db->showDebug = false;
$db->backupDir = '/mnt/backups/mysql/';
$db->ignoreDatabases = ['test','unimportant_db'];
$db->emptyTables = ['largedb.large_table1','largedb.cachetable'];
$db->dumpDatabases();

The above command will dump all databases except for test and unimportant_db from server.com
The data from two tables, large_table1 & cachetable, (found in database largedb) will be ignored, however the table structure will be backed up. This is especially handy if you have temporary tables or large tables which contain unimportant / cached data.
A total of 30-days of backups will be kept. Note: Backups are named by date (yyyy-mm-dd.tar.xz), so a maximum of 1 backup per day can be kept. If the script is re-run on the same day, the repository is synced and the existing daily backup overwritten.

Notes

By default all databases are backed up ($db->includeDatabases = ['*']). You can limit this to a subset of your databases if you like.

makroz / phpmybackup