PHP: Mysql Dumper

Mysql Dumper is the only library that supports: * Output binary blobs as hex. * Resolves view dependencies (using Stand-In tables). * Dumps stored procedures. * Dumps events. * Does extended-insert and/or complete-insert. * Supports virtual columns from MySQL 5.7.

Requirements

• PHP 7.0.0 or newer
• MySQL 5.4.0 or newer
• PDO

Installing

Using Composer:

$ composer require niko9911/mysqldump-php:1.*

Or via json file:

"require": {
        "niko9911/mysqldump-php":"1.*"
}

Using Curl to always download and decompress the latest release:

$ curl --silent --location https://api.github.com/repos/niko9911/mysqldump-php/releases | grep -i tarball_url | head -n 1 | cut -d '"' -f 4 | xargs curl --location --silent | tar xvz

Getting started

With Autoloader/Composer:

<?php

use Niko9911\MysqlDump\Dump;

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

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' => Mysqldump::NONE,
    'init_commands' => array(),
    'no-data' => array(),
    'reset-auto-increment' => false,
    'add-drop-database' => false,
    'add-drop-table' => false,
    'add-drop-trigger' => true,
    'add-locks' => true,
    'complete-insert' => false,
    'databases' => false,
    'default-character-set' => Mysqldump::UTF8,
    'disable-keys' => true,
    'extended-insert' => true,
    'events' => false,
    'hex-blob' => true, /faster than escaped content/
    'net_buffer_length' => self::MAXLINESIZE,
    'no-autocommit' => true,
    'no-create-info' => false,
    'lock-tables' => true,
    'routines' => false,
    'single-transaction' => true,
    'skip-triggers' => false,
    'skip-tz-utc' => false,
    'skip-comments' => false,
    'skip-dump-date' => false,
    'skip-definer' => false,
    'where' => '',
    /deprecated/
    'disable-foreign-keys-check' => true
);

$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

• include-tables - Only include these tables (array of table names), include all if empty
• exclude-tables - Exclude these tables (array of table names), include all if empty, supports regexps
• compress - Gzip, Bzip2, None. - Could be specified using the declared consts: IMysqldump\Mysqldump::GZIP, IMysqldump\Mysqldump::BZIP2 or IMysqldump\Mysqldump::NONE
• reset-auto-increment - Removes the AUTO_INCREMENT option from the database definition - Useful when used with no-data, so when db is recreated, it will start from 1 instead of using an old value
• add-drop-database - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_add-drop-database
• add-drop-table - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_add-drop-table
• add-drop-triggers - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_add-drop-trigger
• add-locks - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_add-locks
• complete-insert - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_complete-insert
• databases - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_databases
• default-character-set - utf8 (default, compatible option), utf8mb4 (for full utf8 compliance) - Could be specified using the declared consts: IMysqldump\Mysqldump::UTF8 or IMysqldump\Mysqldump::UTF8MB4BZIP2 - http://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html - https://mathiasbynens.be/notes/mysql-utf8mb4
• disable-keys - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_disable-keys
• events - https://dev.mysql.com/doc/refman/5.7/en/mysqldump.html#option_mysqldump_events
• extended-insert - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_extended-insert
• hex-blob - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_hex-blob
• lock-tables - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_lock-tables
• net_buffer_length - http://dev.mysql.com/doc/refman/5.7/en/mysqldump.html#option_mysqldump_net_buffer_length
• no-autocommit - Option to disable autocommit (faster inserts, no problems with index keys) - http://dev.mysql.com/doc/refman/4.1/en/commit.html
• no-create-info - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_no-create-info
• no-data - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_no-data - Do not dump data for these tables (array of table names), support regexps, `true` to ignore all tables
• routines - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_routines
• single-transaction - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_single-transaction
• skip-comments - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_comments
• skip-dump-date - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_dump-date
• skip-triggers - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_triggers
• skip-tz-utc - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_tz-utc
• skip-definer - https://dev.mysql.com/doc/refman/5.7/en/mysqlpump.html#option_mysqlpump_skip-definer
• where - http://dev.mysql.com/doc/refman/5.1/en/mysqldump.html#option_mysqldump_where

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

• disable-foreign-keys-check - http://dev.mysql.com/doc/refman/5.5/en/optimizing-innodb-bulk-data-loading.html

PDO Settings

• PDO::ATTR_PERSISTENT
• PDO::ATTR_ERRMODE
• PDO::MYSQL_ATTR_INIT_COMMAND
• PDO::MYSQL_ATTR_USE_BUFFERED_QUERY - http://www.php.net/manual/en/ref.pdo-mysql.php - http://stackoverflow.com/questions/13728106/unexpectedly-hitting-php-memory-limit-with-a-single-pdo-query/13729745#13729745 - http://www.php.net/manual/en/mysqlinfo.concepts.buffering.php

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?

TODO

GitLab CI & Automatic Deployment to Composer

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 For commercial licenses, please contact niko-at-ironlions-dot-fi.

Credits

After more than 8 years, there is barely anything left from the original source code, but:

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

Rewrite based on from Diego Torres. https://github.com/ifsnop

Currently maintained, developed and improved by Niko Granö. https://github.com/niko9911