FluentPDO is a quick and light PHP library for rapid query building. It features a smart join builder, which automatically creates table joins.

v2.1.4 2020-07-16 00:19 UTC


FluentPDO is a PHP SQL query builder using PDO. It's a quick and light library featuring a smart join builder, which automatically creates table joins for you.


  • Easy interface for creating robust queries
  • Supports any database compatible with PDO
  • Ability to build complex SELECT, INSERT, UPDATE & DELETE queries with little code
  • Type hinting for magic methods with code completion in smart IDEs


The latest (2.x) release of FluentPDO officially supports PHP 7.1, 7.2 and 7.3. v2.x is actively maintained.

The legacy (1.x) release of FluentPDO works with PHP 5.4 to 7.1. Note: v1.x is no longer supported and will not be maintained or updated.


Sitepoint - Getting Started with FluentPDO



The preferred way to install FluentPDO is via composer. Version 2.0 is now released! Please start using 2.x in your projects and let us know of any issues you find, they will be resolved quickly.

Add the following line in your composer.json file:

"require": {
	"envms/fluentpdo": "^2.1.0"

update your dependencies with composer update, and you're done!


If you prefer not to use composer, create the directory Envms/FluentPDO in your library directory, and drop this repository into it. Finally, add:

require "[lib-dir]/Envms/FluentPDO/src/Query.php";

to the top of your application. Note: You will need an autoloader to use FluentPDO without changing its source code.

Getting Started

Create a new PDO instance, and pass the instance to FluentPDO:

$pdo = new PDO("mysql:dbname=fluentdb", "root");
$fluent = new \Envms\FluentPDO\Query($pdo);

Then, creating queries is quick and easy:

$query = $fluent->from('comment')
             ->where('article.published_at > ?', $date)
             ->orderBy('published_at DESC')

which would build the query below:

SELECT comment.*
FROM comment
LEFT JOIN article ON article.id = comment.article_id
WHERE article.published_at > ?
ORDER BY article.published_at DESC

To get data from the select, all we do is loop through the returned array:

foreach ($query as $row) {
    echo "$row[title]\n";

Using the Smart Join Builder

Let's start with a traditional join, below:

$query = $fluent->from('article')
             ->leftJoin('user ON user.id = article.user_id')

That's pretty verbose, and not very smart. If your tables use proper primary and foreign key names, you can shorten the above to:

$query = $fluent->from('article')

That's better, but not ideal. However, it would be even easier to not write any joins:

$query = $fluent->from('article')

Awesome, right? FluentPDO is able to build the join for you, by you prepending the foreign table name to the requested column.

All three snippets above will create the exact same query:

SELECT article.*, user.name 
FROM article 
LEFT JOIN user ON user.id = article.user_id
Close your connection

Finally, it's always a good idea to free resources as soon as they are done with their duties:


CRUD Query Examples

$query = $fluent->from('article')->where('id', 1);
$query = $fluent->from('user', 1); // shorter version if selecting one row by primary key
$values = array('title' => 'article 1', 'content' => 'content 1');

$query = $fluent->insertInto('article')->values($values)->execute();
$query = $fluent->insertInto('article', $values)->execute(); // shorter version
$set = array('published_at' => new FluentLiteral('NOW()'));

$query = $fluent->update('article')->set($set)->where('id', 1)->execute();
$query = $fluent->update('article', $set, 1)->execute(); // shorter version if updating one row by primary key
$query = $fluent->deleteFrom('article')->where('id', 1)->execute();
$query = $fluent->deleteFrom('article', 1)->execute(); // shorter version if deleting one row by primary key

Note: INSERT, UPDATE and DELETE queries will only run after you call ->execute()

Full documentation can be found on the FluentPDO homepage


Free for commercial and non-commercial use under the Apache 2.0 or GPL 2.0 licenses.