clouddueling/mysqldump-php

This is a php version of linux's mysqldump in terminal "$ mysqldump -u username -p..."

v2.1 2015-10-19 15:58 UTC

README

Requirements | Installing | Getting started | API | Settings | PDO Settings | TODO | License | Credits

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This is a php version of linux's mysqldump in terminal "$ mysqldump -u username -p...", without dependencies, output compression and sane defaults.

Out of the box, MySQLDump-PHP supports backing up table structures, the data itself, views and triggers.

MySQLDump-PHP is the only library that supports:

  • output binary blobs as hex.
  • resolves view dependencies (using Stand-In tables).
  • output compared against original mysqldump. Linked to travis-ci testing system.
  • dumps stored procedures.
  • does extended-insert and/or complete-insert.

Important

From version 2.0, connections to database are made using the standard DSN, documented in PDO connection string.

Requirements

  • PHP 5.3.0 or newer
  • MySQL 4.1.0 or newer
  • PDO

Installing

Using Composer:

$ composer require ifsnop/mysqldump-php:2.*

Or via json file:

"require": {
        "ifsnop/mysqldump-php":"2.*"
}

Using Curl:

$ curl --silent --location https://github.com/ifsnop/mysqldump-php/archive/v2.0.0.tar.gz | tar xvfz -

Getting started

With Autoloader/Composer:

<?php

use Ifsnop\Mysqldump as IMysqldump;

try {
    $dump = new IMysqldump\Mysqldump('mysql:host=localhost;dbname=testdb', 'username', 'password');
    $dump->start('storage/work/dump.sql');
} catch (\Exception $e) {
    echo 'mysqldump-php error: ' . $e->getMessage();
}

?>

Plain old PHP:

<?php

    include_once(dirname(__FILE__) . '/mysqldump-php-2.0.0/src/Ifsnop/Mysqldump/Mysqldump.php');
    $dump = new Ifsnop\Mysqldump\Mysqldump('mysql:host=localhost;dbname=testdb', 'username', 'password');
    $dump->start('storage/work/dump.sql');

?>

Refer to the wiki for some examples and a comparision between mysqldump and mysqldump-php dumps.

Constructor and default parameters

/**
 * Constructor of Mysqldump. Note that in the case of an SQLite database
 * connection, the filename must be in the $db parameter.
 *
 * @param string $dsn        PDO DSN connection string
 * @param string $user       SQL account username
 * @param string $pass       SQL account password
 * @param array  $dumpSettings SQL database settings
 * @param array  $pdoSettings  PDO configured attributes
 */
public function __construct(
    $dsn = '',
    $user = '',
    $pass = '',
    $dumpSettings = array(),
    $pdoSettings = array()
)

$dumpSettingsDefault = array(
    'include-tables' => array(),
    'exclude-tables' => array(),
    'compress' => 'None',
    'no-data' => false,
    'add-drop-table' => false,
    'single-transaction' => true,
    'lock-tables' => false,
    'add-locks' => true,
    'extended-insert' => true,
    'complete-insert' => false,
    'disable-keys' => true,
    'where' => '',
    'no-create-info' => false,
    'skip-triggers' => false,
    'add-drop-trigger' => true,
    'routines' => false,
    'hex-blob' => true,
    'databases' => false,
    'add-drop-database' => false,
    'skip-tz-utc' => false,
    'no-autocommit' => true,
    'default-character-set' => 'utf8',
    'skip-comments' => false,
    'skip-dump-date' => false,
);

$pdoSettingsDefaults = array(
    PDO::ATTR_PERSISTENT => true,
    PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
    PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => false
);

// missing settings in constructor will be replaced by default options
$this->_pdoSettings = self::array_replace_recursive($pdoSettingsDefault, $pdoSettings);
$this->_dumpSettings = self::array_replace_recursive($dumpSettingsDefault, $dumpSettings);

Dump Settings

The following options are now enabled by default, and there is no way to disable them since they should always be used.

PDO Settings

Errors

To dump a database, you need the following privileges :

  • SELECT
    • In order to dump table structures and data.
  • SHOW VIEW
    • If any databases has views, else you will get an error.
  • TRIGGER
    • If any table has one or more triggers.
  • LOCK TABLES
    • If "lock tables" option was enabled.

Use SHOW GRANTS FOR user@host; to know what privileges user has. See the following link for more information:

Which are the minimum privileges required to get a backup of a MySQL database schema?

Tests

Current code for testing is an ugly hack. Probably there are much better ways of doing them using PHPUnit, so PR's are welcomed. The testing script creates and populates a database using all possible datatypes. Then it exports it using both mysqldump-php and mysqldump, and compares the output. Only if it is identical tests are OK.

TODO

...

Contributing

Format all code to PHP-FIG standards. http://www.php-fig.org/

License

This project is open-sourced software licensed under the GPL license

Credits

Originally based on James Elliott's script from 2009. http://code.google.com/p/db-mysqldump/

Adapted and extended by Michael J. Calkins. https://github.com/clouddueling

Currently maintained and developed by Diego Torres. https://github.com/ifsnop