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Elastic Docs ›Elasticsearch-PHP [8.15]

Getting started

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Getting started

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This page guides you through the installation process of the PHP client, shows you how to instantiate the client, and how to perform basic Elasticsearch operations with it.

Requirements

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If you don’t have composer you can install it by running the following commands:

curl -s http://getcomposer.org/installer | php
php composer.phar install

Installation

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To install the latest version of the client, run the following command:

composer require elasticsearch/elasticsearch

When you have installed elasticsearch-php you can start using it with the Client class. You can use the ClientBuilder class to create this object:

require 'vendor/autoload.php';

$client = Elastic\Elasticsearch\ClientBuilder::create()->build();

Refer to the Installation page to learn more.

Connecting

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You can connect to the Elastic Cloud using an API key and the Elasticsearch endpoint.

$client = ClientBuilder::create()
   ->setHosts(['<elasticsearch-endpoint>'])
   ->setApiKey('<api-key>')
   ->build();

Your Elasticsearch endpoint can be found on the My deployment page of your deployment:

Finding Elasticsearch endpoint

You can generate an API key on the Management page under Security.

Create API key

For other connection options, refer to the Connecting section.

Operations

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Time to use Elasticsearch! This section walks you through the basic, and most important, operations of Elasticsearch. For more operations and more advanced examples, refer to the Operations page.

Creating an index

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This is how you create the my_index index:

$client = ClientBuilder::create()->build();
$params = [
    'index' => 'my_index'
];

// Create the index
$response = $client->indices()->create($params);

Indexing documents

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This is a simple way of indexing a document:

$params = [
    'index' => 'my_index',
    'body'  => [ 'testField' => 'abc']
];

// Document will be indexed to my_index/_doc/<autogenerated ID>
$response = $client->index($params);

You can bulk index documents with batches in a slightly more complex way:

Bulk indexing with batches.

$params = ['body' => []];

for ($i = 1; $i <= 1234567; $i++) {
    $params['body'][] = [
        'index' => [
            '_index' => 'my_index',
            '_id'    => $i
        ]
    ];

    $params['body'][] = [
        'my_field'     => 'my_value',
        'second_field' => 'some more values'
    ];

    // Every 1000 documents stop and send the bulk request
    if ($i % 1000 == 0) {
        $responses = $client->bulk($params);

        // erase the old bulk request
        $params = ['body' => []];

        // unset the bulk response when you are done to save memory
        unset($responses);
    }
}

// Send the last batch if it exists
if (!empty($params['body'])) {
    $responses = $client->bulk($params);
}

Getting documents

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You can get documents by using the following code:

$params = [
    'index' => 'my_index',
    'id'    => 'my_id'
];

// Get doc at /my_index/_doc/my_id
$response = $client->get($params);

Searching documents

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This is how you can create a single match query with the PHP client:

$params = [
    'index' => 'my_index',
    'body'  => [
        'query' => [
            'match' => [
                'testField' => 'abc'
            ]
        ]
    ]
];

$results = $client->search($params);

Updating documents

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This is how you can update a document, for example to add a new field:

$params = [
    'index' => 'my_index',
    'id'    => 'my_id',
    'body'  => [
        'doc' => [
            'new_field' => 'abc'
        ]
    ]
];

// Update doc at /my_index/_doc/my_id
$response = $client->update($params);

Deleting documents

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$params = [
    'index' => 'my_index',
    'id'    => 'my_id'
];

// Delete doc at /my_index/_doc_/my_id
$response = $client->delete($params);

Deleting an index

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$params = ['index' => 'my_index'];
$response = $client->indices()->delete($params);

Further reading

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