php-incremental-backup

PHP incremental backup is a php library designed to support setting incremental backups run by cron scripts. The library is a wrapper to different commands

Tools supported

• Duplicity
• Tar
• Borg backup

These tools are used to perform incremental backups on the directories chosen.

Requirements:

• php 5.4 or greater installed.
• one of the above libraries to be installed in your system.

How to install

1. Using composer

composer require iobotis/php-incremental-backup

2. Download and run composer install Follow the examples in the examples folder

Examples:

1. Simple Duplicity backup.

use Backup\Tools\Factory as ToolFactory;

$settings = array(
    'path_to_backup' => $path_to_backup,
    'destination' => array(
        'type' => 'local',
        'path' => '/path/to/save'
    ),
//    'passphrase' => 'abcdef',
//    'exclude' => array('folder')
);

$backup = ToolFactory::create('Duplicity', $settings);
$backup->execute();

2. Simple Duplicity backup with wrapper class.

use Backup\Tools\Factory as ToolFactory;
use Backup\IncrementalBackup;

use Backup\Tools\Factory as ToolFactory;

$settings = array(
    'path_to_backup' => $path_to_backup,
    'destination' => array(
        'type' => 'local',
        'path' => '/path/to/save'
    ),
//    'passphrase' => 'abcdef',
//    'exclude' => array('folder')
);

$backup = ToolFactory::create('Duplicity', $settings);
$backupClass = new IncrementalBackup ($backup);

$backups = $backupClass->getAllBackups();
foreach ($backups as $time) {
    echo 'There is a backup at ' . $time . "\n";
}

if( $backupClass->isChanged() ) {
    // back me up.
    echo 'Back up initiated' . "\n";
    $backupClass->createBackup();
}
else {
    echo 'No need to backup.' . "\n";
}

3. Simple Duplicity backup restore last backup.

use Backup\Tools\Factory as ToolFactory;
use Backup\IncrementalBackup;

$settings = array(
    'path_to_backup' => $path_to_backup,
    'destination' => array(
        'type' => 'local',
        'path' => '/path/to/save'
    ),
//    'passphrase' => 'abcdef'
);

$duplicity = ToolFactory::create('Duplicity', $settings);
$backupClass = new IncrementalBackup ($duplicity);

// Restore last backup to this directory.
$backupClass->restoreTo(end( $backups ), '/path/to/restore');

4. Simple Tar backup.

use Backup\Tools\Factory as ToolFactory;
use Backup\IncrementalBackup;

$settings = array(
    'path_to_backup' => $path_to_backup,
    'destination' => array(
        'type' => 'local',
        'path' => $path_to_save
    ),
    //'exclude' => array('exclude', 'exclude1')
);

$backup = ToolFactory::create('Tar', $settings);
$backupClass = new IncrementalBackup ($backup);

$backups = $backupClass->getAllBackups();
foreach ($backups as $time) {
    echo 'There is a backup at ' . $time . "\n";
}

if( $backupClass->isChanged() ) {
    // back me up.
    echo 'Back up initiated' . "\n";
    $backupClass->createBackup();
}
else {
    echo 'No need to backup.' . "\n";
}

5. Tar restore last backup.

use Backup\Tools\Factory as ToolFactory;
use Backup\IncrementalBackup;

$settings = array(
    'path_to_backup' => $path_to_backup,
    'destination' => array(
        'type' => 'local',
        'path' => $path_to_save
    ),
);

$backup = ToolFactory::create('Tar', $settings);
$backupClass = new IncrementalBackup ( $backup );

$backups = $backupClass->getAllBackups();

// Restore last backup to this directory.
$backupClass->restoreTo( end( $backups ), '/path/to/restore' );

Advanced usage

1)Duplicity without Factory

use Backup\Binary;
use Backup\FileSystem\Source;
use Backup\Destination\Factory as DesFactory;
use Backup\Tools\Duplicity;
use Backup\FileSystem\Folder;

$binary = new Binary('/usr/bin/duplicity');
$source = new Source('/var/www/example_com');
$destination = DesFactory::create('/var/backups/example_com');

$duplicity = new Duplicity($source,$destination,$binary);

$duplicity->setArchiveDir('/var/www/cache');
$duplicity->setExludedSubDirectories(array('cache', 'logs', 'tmp'));

// check if duplicity is installed.
$duplicity->isInstalled();

// get duplicity version.
$duplicity->getVersion();

// verify backup location.
$duplicity->verify();

// backup if needed.
$duplicity->execute();

// retrieve existing backups.
$backups = $duplicity->getAllBackups();

// restore 1st backup.
$folder = new Folder('/var/www/example_com');
$duplicity->restore($backups[0], $folder);

How to run unit tests

From the root folder run: php {location of phpunit phar}/phpunit.phar

or Install composer dependencies and run the scripts defined in composer.json.