A lightweight nearly-zero-configuration object-relational mapper and fluent query builder for PHP5

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v1.5.8 2022-07-18 03:49 UTC

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Last update: 2024-04-19 03:34:57 UTC


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In maintenance only mode

Idiorm and Paris are now considered to be feature complete as of version 1.5.0. Whilst they will continue to be maintained with bug fixes there will be no further new features added from this point on. This means that if a pull request makes breaking changes to the API or requires anything other than a patch version bump of the library then it will not be merged.

Please do not submit feature requests or API breaking changes as they will be closed without ceremony.

Should I use Idiorm/Paris?

If you're starting a new project

It is not recommended that you use either Idiorm or Paris in new projects.

I recommend that you use the Eloquent database library from Laravel as Taylor based it on Idiorm when he wrote it. This means that many of the same ideas are present there, but it is more actively maintained and has a more modern code style.

If you have existing projects based on Idiorm or Paris

You can continue to use both projects as they will continue to receive security patches and bug fixes. It is important to note that future versions of PHP may not be supported if changes they require would break backwards compatibility.

At this point you can either use another database library such as Eloquent from Laravel (see If you're starting a new project above) or you could decide to fork Idiorm and/or Paris to patch them with your own modifications.

But, why?

For further information on the state of this project please see #360

A lightweight nearly-zero-configuration object-relational mapper and fluent query builder for PHP5 and above.

Tested on PHP 5.2.0+ - may work on earlier versions with PDO and the correct database drivers.

Released under a BSD license.

See Also: Paris, an Active Record implementation built on top of Idiorm.


  • Makes simple queries and simple CRUD operations completely painless.
  • Gets out of the way when more complex SQL is required.
  • Built on top of PDO.
  • Uses prepared statements throughout to protect against SQL injection attacks.
  • Requires no model classes, no XML configuration and no code generation: works out of the box, given only a connection string.
  • Consists of one main class called ORM. Additional classes are prefixed with Idiorm. Minimal global namespace pollution.
  • Database agnostic. Currently supports SQLite, MySQL, Firebird and PostgreSQL. May support others, please give it a try!
  • Supports collections of models with method chaining to filter or apply actions to multiple results at once.
  • Multiple connections supported
  • PSR-1 compliant methods (any method can be called in camelCase instead of underscores eg. find_many() becomes findMany()) - you'll need PHP 5.3+


The documentation is hosted on Read the Docs: idiorm.rtfd.org

Building the Docs

You will need to install Sphinx and then in the docs folder run:

make html

The documentation will now be in docs/_build/html/index.html

Let's See Some Code

$user = ORM::for_table('user')
    ->where_equal('username', 'j4mie')

$user->first_name = 'Jamie';

$tweets = ORM::for_table('tweet')
    ->join('user', array(
        'user.id', '=', 'tweet.user_id'
    ->where_equal('user.username', 'j4mie')

foreach ($tweets as $tweet) {
    echo $tweet->text;


Tests are written with PHPUnit and be run through composer

composer test

To make testing on PHP 5.2 (Idiorm maintains support back to this version of PHP) there is a Docker setup in ./test/docker_for_php52 - check the readme in there for more.


1.5.8 - released 2022-07-18

1.5.7 - released 2020-04-29

1.5.6 - released 2018-05-31

  • Assign null to self::$_db on reset_db() to ensure PDO closes the connections [bleakgadfly] - issue #338

1.5.5 - released 2018-01-05

  • Add a docker setup for testing with PHP 5.2 (uses PHPUnit 3.6.12, which is the last version released compatible with PHP 5.2) [Treffynnon]

1.5.4 - released 2018-01-04

1.5.3 - released 2017-03-21

  • Document the raw_execute() method and add a note for get_db() in the querying documentation - [Treffynnon]

1.5.2 - released 2016-12-14

1.5.1 - released 2014-06-23

1.5.0 - released 2014-06-22

1.4.1 - released 2013-12-12

Patch update to remove a broken pull request - may have consequences for users of 1.4.0 that exploited the "find_many() now returns an associative array with the databases primary ID as the array keys" change that was merged in 1.4.0.

  • Back out pull request/issue #133 as it breaks backwards compatibility in previously unexpected ways (see #162, #156 and #133) - sorry for merging this change into Idiorm - closes issue 156

1.4.0 - released 2013-09-05

1.3.0 - released 2013-01-31

  • Documentation moved to idiorm.rtfd.org and now built using Sphinx
  • Add support for multiple database connections - closes issue #15 [tag]
  • Add in raw_execute - closes issue #40 [tag]
  • Add get_last_statement() - closes issue #84 [tag]
  • Add HAVING clause functionality - closes issue #50
  • Add is_new method - closes issue #85
  • Add ArrayAccess support to the model instances allowing property access via $model['field'] as well as $model->field - issue #51
  • Add a result set object for collections of models that can support method chains to filter or apply actions to multiple results at once - issue #51 and #22
  • Add support for Firebird with ROWS and TO result set limiting and identifier quoting [mapner] - issue #98
  • Fix last insert ID for PostgreSQL using RETURNING - closes issues #62 and #89 [laacz]
  • Reset Idiorm after performing a query to allow for calling count() and then find_many() [fayland] - issue #97
  • Change Composer to use a classmap so that autoloading is better supported [javierd] - issue #96
  • Add query logging to delete_many [tag]
  • Fix when using set_expr alone it doesn't trigger query creation - closes issue #90
  • Escape quote symbols in "_quote_identifier_part" - close issue #74
  • Fix issue with aggregate functions always returning int when is float sometimes required - closes issue #92
  • Move testing into PHPUnit to unify method testing and query generation testing

1.2.3 - released 2012-11-28

  • Fix issue #78 - remove use of PHP 5.3 static call

1.2.2 - released 2012-11-15

  • Fix bug where input parameters were sent as part-indexed, part associative

1.2.1 - released 2012-11-15

  • Fix minor bug caused by IdiormStringException not extending Exception

1.2.0 - released 2012-11-14

  • Setup composer for installation via packagist (j4mie/idiorm)
  • Add order_by_expr method [sandermarechal]
  • Add support for raw queries without parameters argument [sandermarechal]
  • Add support to set multiple properties at once by passing an associative array to set method [sandermarechal]
  • Allow an associative array to be passed to configure method [jordanlev]
  • Patch to allow empty Paris models to be saved ([j4mie/paris]) - issue #58
  • Add select_many and select_many_expr - closing issues #49 and #69
  • Add support for MIN, AVG, MAX and SUM - closes issue #16
  • Add group_by_expr - closes issue #24
  • Add set_expr to allow database expressions to be set as ORM properties - closes issues #59 and #43 [brianherbert]
  • Prevent ambiguous column names when joining tables - issue #66 [hellogerard]
  • Add delete_many method [CBeerta]
  • Allow unsetting of ORM parameters [CBeerta]
  • Add find_array to get the records as associative arrays [Surt] - closes issue #17
  • Fix bug in _log_query with ? and % supplied in raw where statements etc. - closes issue #57 [ridgerunner]

1.1.1 - released 2011-01-30

  • Fix bug in quoting column wildcard. j4mie/paris#12
  • Small documentation improvements

1.1.0 - released 2011-01-24

  • Add is_dirty method
  • Add basic query caching
  • Add distinct method
  • Add group_by method

1.0.0 - released 2010-12-01

  • Initial release