maludb/client

PHP driver for MaluDB — a memory DBMS on PostgreSQL.

v0.1.0 2026-05-17 18:15 UTC

Requires

• php: >=8.2
• ext-json: *
• ext-pdo: *
• ext-pdo_pgsql: *

Requires (Dev)

• phpunit/phpunit: ^11.0

PostgreSQL

• Edward Honour

• postgresql
• Audit
• memory
• knowledge
• llm
• rag
• maludb

README

PHP 8.2+ client for the maludb_core extension. Mirrors the Python and Node.js drivers in shape and method names.

Status: alpha. v0.1.0 covers the headline read/write surface; streaming, pool retrieval, and the workflow-extraction helpers land in later versions.

Requirements

PHP	>= 8.2
Extensions	ext-pdo, ext-pdo_pgsql, ext-json
PostgreSQL	maludb_core 0.41.0+ installed in the target DB

On Ubuntu 24.04:

sudo apt install php-cli php-pgsql

Composer is needed for the autoload + dev deps:

# If composer isn't installed, install it system-wide:
curl -sS https://getcomposer.org/installer -o composer-setup.php
php composer-setup.php
sudo mv composer.phar /usr/local/bin/composer
rm composer-setup.php
composer --version

If you do not have sudo access, install Composer for your user instead:

mkdir -p "$HOME/.local/bin"
curl -sS https://getcomposer.org/installer | php -- --install-dir="$HOME/.local/bin" --filename=composer
"$HOME/.local/bin/composer" --version

If the user-local composer command is not found in a new shell, add $HOME/.local/bin to your PATH:

echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.profile
. ~/.profile

Install

The PHP driver is currently distributed from this repository. The Packagist package name is reserved as maludb/client, but a plain composer require maludb/client only works after the package has been published to Packagist.

To run examples or tests from this source tree:

git clone https://github.com/maludb/maludb-core.git
cd maludb-core/drivers/php
composer install

To use the driver from another PHP project before the Packagist package is published, point Composer at your local checkout:

cd /path/to/your/php-project
composer init --no-interaction --name=local/maludb-app   # skip if composer.json already exists
composer config repositories.maludb-client path /path/to/maludb-core/drivers/php
composer require 'maludb/client:*@dev'

Quickstart

<?php
use MaluDB\Client;

require 'vendor/autoload.php';

// `postgresql:///mydb` would default pg's PDO to TCP+localhost which
// then requires SCRAM password auth. Append ?host=/var/run/postgresql
// for peer-auth via the Unix socket on a default PGDG install.
$client = Client::fromDsn(
    "postgresql:///mydb?host=/var/run/postgresql",
);

$sp = $client->registerSourcePackage(
    sourceType: 'log',
    contentText: 'oncall: 14:22Z api-gateway 5xx burst',
    originJsonb: ['uri' => 'log://oncall/2026-05-13'],
);

$c1 = $client->registerClaim(
    subject: 'api_gateway',
    verb: 'observed',
    objectValue: '5xx_burst',
    statementText: 'Initial 5xx surge at 14:22Z',
    sourcePackageId: $sp,
);

foreach ($client->retrieve('api_gateway', null, null, null, null, null, 10) as $hit) {
    echo "$hit->objectType {$hit->objectId} {$hit->rank}\n";
}

Available methods

Group	Methods
Ingest	registerSourcePackage, registerClaim, registerFact, registerMemory, registerEpisode
Retrieve	textSearch, retrieve, replayEpisode
Pool	createPool, poolAddObservation, poolPromoteToClaim
Skill	registerSkill, addSkillState, addSkillTransition, beginSkillExecution, stepSkillExecution, abortSkillExecution
Node	registerLocalNode, nodeSubmit, nodeAccept, nodeReject, revokeLocalNode
Misc	version(), raw (the underlying PDO instance)

Exception hierarchy

MaluDBError
├── MaluDBNotFound                       (P0002 / 02000)
├── MaluDBInvalidParameter               (22023 / 22P02)
├── MaluDBObjectNotInPrerequisiteState   (55000)
├── MaluDBCheckViolation                 (23514)
└── MaluDBPermissionDenied               (42501)

catch (MaluDBNotFound $e) { … }. All classes live in MaluDB\Exceptions\.

Running tests

cd drivers/php
composer install
MALUDB_TEST_DSN="postgresql:///maludb_bench?host=/var/run/postgresql" \
    vendor/bin/phpunit