Vector Client SDK for PHP

Upstash Vector is an HTTP serverless Vector Database.

You can store, query, and retrieve vectors from your application, use it to power your search, and more.

You can read more about Upstash Vector here.

Quick Start

Installation

You can install the package via composer:

composer require upstash/vector

Create Index

Create a new index on Upstash

Usage

Initialize the index

use Upstash\Vector\Index;

// Initialize the index
$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

// or just to use the environment variables
$index = Index::fromEnv();

Upserting Vectors

use Upstash\Vector\Index;
use Upstash\Vector\VectorUpsert;

use function Upstash\Vector\createRandomVector;

$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

$index->upsert(new VectorUpsert(
    id: 'upstash-rocks',
    vector: createRandomVector(dimensions: 1536),
    metadata: ['field' => 'value'],
));

Upserting Data with Embedding Models

use Upstash\Vector\Index;
use Upstash\Vector\DataUpsert;

$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

$index->upsertData(new DataUpsert(
    id: 'upstash-vector',
    data: 'Upstash Vector is a serverless vector database.',
    metadata: ['field' => 'value'],
));

Querying Vectors

use Upstash\Vector\Index;
use Upstash\Vector\VectorQuery;

use function Upstash\Vector\createRandomVector;

$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

$index->query(new VectorQuery(
    vector: createRandomVector(dimensions: 1536),
    topK: 5,
));

Querying Data with Embedding Models

use Upstash\Vector\Index;
use Upstash\Vector\DataQuery;

$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

$index->queryData(new DataQuery(
    data: 'What is Upstash Vector?',
    topK: 5,
));

Fetch specific vectors

use Upstash\Vector\Index;
use Upstash\Vector\VectorFetch;

$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

$index->fetch(new VectorFetch(ids: ['upstash-rocks']));

Delete specific vectors

use Upstash\Vector\Index;

$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

$index->delete(['upstash-rocks']);

Namespaces

Upstash Vector allows you to partition a single index into multiple isolated namespaces. Each namespace functions as a self-contained subset of the index, in which read and write requests are only limited to one namespace. To learn more about it, see Namespaces.

Example

use Upstash\Vector\Index;
use Upstash\Vector\VectorUpsert;

use function Upstash\Vector\createRandomVector;

$index = new Index(
    url: 'UPSTASH_VECTOR_REST_URL',
    token: 'UPSTASH_VECTOR_REST_TOKEN',
);

// Upsert to namespace
$index->namespace('books')->upsert(new VectorUpsert(
    id: 'upstash-rocks',
    vector: createRandomVector(dimensions: 1536),
    metadata: ['field' => 'value'],
));

Troubleshooting

We have a Discord for common problems. If you can't find a solution, please open an issue.

Testing

composer test

Changelog

Please see CHANGELOG for more information on what has changed recently.