Algolia Search is a hosted full-text, numerical, and faceted search engine capable of delivering realtime results from the first keystroke.

Our PHP client lets you easily use the Algolia Search API from your backend. It wraps the Algolia Search REST API.

Getting Started

1. Getting started
2. Quick Start
3. Guides & Tutorials

Commands Reference

Getting started

1. Install
2. Init index

Search

1. Search in an index
2. Find by IDs

Indexing

1. Add objects
2. Update objects
3. Partial update objects
4. Delete objects

Settings

1. Get settings
2. Set settings

Manage Indices

1. List indices
2. Delete index
3. Clear index
4. Copy index
5. Move index

Api Keys

1. Generate key

Synonyms

1. Save synonym
2. Batch synonyms
3. Editing Synonyms
4. Delete Synonyms
5. Clear all synonyms
6. Get synonym
7. Search synonyms

Advanced

1. Custom batch
2. Wait for operations
3. Multiple queries
4. Delete by query
5. Backup / Export an index
6. List api keys
7. Add user key
8. Update user key
9. Delete user key
10. Get key permissions
11. Get Logs

Check our online guides:

• Data Formatting
• Import and Synchronize data
• Autocomplete
• Instant search page
• Filtering and Faceting
• Sorting
• Ranking Formula
• Typo-Tolerance
• Geo-Search
• Security
• API-Keys
• REST API

Install the package via Composer:

composer require algolia/algoliasearch-client-php

If you don't use Composer, you can copy the algoliasearch.php file and the src and resources directories to your project).

If you're a Symfony or Laravel user, you're probably looking for the following integrations

• Laravel: algolia/algoliasearch-laravel
• Symfony: algolia/AlgoliaSearchBundle

To initialize the client, you need your Application ID and API Key. You can find both of them on your Algolia account.

// composer autoload
require __DIR__ . '/vendor/autoload.php';
// if you are not using composer: require_once 'path/to/algoliasearch.php';

$client = new \AlgoliaSearch\Client('YourApplicationID', 'YourAPIKey');
$index = $client->initIndex('index_name');

In 30 seconds, this quick start tutorial will show you how to index and search objects.

Without any prior configuration, you can start indexing 500 contacts in the contacts index using the following code:

$index = $client->initIndex('contacts');
$batch = json_decode(file_get_contents('contacts.json'), true);
$index->addObjects($batch);

You can now search for contacts using firstname, lastname, company, etc. (even with typos):

// search by firstname
var_dump($index->search('jimmie'));

// search a firstname with typo
var_dump($index->search('jimie'));

// search for a company
var_dump($index->search('california paint'));

// search for a firstname & company
var_dump($index->search('jimmie paint'));

Settings can be customized to tune the search behavior. For example, you can add a custom sort by number of followers to the already great built-in relevance:

$index->setSettings(['customRanking' => ['desc(followers)']]);

You can also configure the list of attributes you want to index by order of importance (first = most important):

$index->setSettings(
    [
        'attributesToIndex' => [
            'lastname',
            'firstname',
            'company',
            'email',
            'city',
            'address'
        ]
    ]
);

Since the engine is designed to suggest results as you type, you'll generally search by prefix. In this case the order of attributes is very important to decide which hit is the best:

var_dump($index->search('or'));
var_dump($index->search('jim'));

Note: If you are building a web application, you may be more interested in using our JavaScript client to perform queries. It brings two benefits:

• Your users get a better response time by not going through your servers
• It will offload unnecessary tasks from your servers

<script src="https://cdn.jsdelivr.net/algoliasearch/3/algoliasearch.min.js"></script>
<script>
var client = algoliasearch('ApplicationID', 'apiKey');
var index = client.initIndex('indexName');

// perform query "jim"
index.search('jim', searchCallback);

// the last optional argument can be used to add search parameters
index.search(
  'jim', {
    hitsPerPage: 5,
    facets: '*',
    maxValuesPerFacet: 10
  },
  searchCallback
);

function searchCallback(err, content) {
  if (err) {
    console.error(err);
    return;
  }

  console.log(content);
}
</script>

Notes: If you are building a web application, you may be more interested in using our JavaScript client to perform queries. It brings two benefits:

• Your users get a better response time by not going through your servers
• It will offload unnecessary tasks from your servers.

To perform a search, you only need to initialize the index and perform a call to the search function.

The search query allows only to retrieve 1000 hits. If you need to retrieve more than 1000 hits (e.g. for SEO), you can use Backup / Retrieve all index content.

$index = $client->initIndex('contacts');
$res = $index->search('query string');
$res = $index->search('query string', ['attributesToRetrieve' => 'firstname,lastname', 'hitsPerPage' => 50]);

The server response will look like:

{
  "hits": [
    {
      "firstname": "Jimmie",
      "lastname": "Barninger",
      "objectID": "433",
      "_highlightResult": {
        "firstname": {
          "value": "<em>Jimmie</em>",
          "matchLevel": "partial"
        },
        "lastname": {
          "value": "Barninger",
          "matchLevel": "none"
        },
        "company": {
          "value": "California <em>Paint</em> & Wlpaper Str",
          "matchLevel": "partial"
        }
      }
    }
  ],
  "page": 0,
  "nbHits": 1,
  "nbPages": 1,
  "hitsPerPage": 20,
  "processingTimeMS": 1,
  "query": "jimmie paint",
  "params": "query=jimmie+paint&attributesToRetrieve=firstname,lastname&hitsPerPage=50"
}

• hits (array): The hits returned by the search, sorted according to the ranking formula.

  Hits are made of the JSON objects that you stored in the index; therefore, they are mostly schema-less. However, Algolia does enrich them with a few additional fields:

  • _highlightResult (object, optional): Highlighted attributes. Note: Only returned when attributesToHighlight is non-empty.

    • ${attribute_name} (object): Highlighting for one attribute.

      • value (string): Markup text with occurrences highlighted. The tags used for highlighting are specified via highlightPreTag and highlightPostTag.

      • matchLevel (string, enum) = {none | partial | full}: Indicates how well the attribute matched the search query.

      • matchedWords (array): List of words from the query that matched the object.

      • fullyHighlighted (boolean): Whether the entire attribute value is highlighted.

  • _snippetResult (object, optional): Snippeted attributes. Note: Only returned when attributesToSnippet is non-empty.

    • ${attribute_name} (object): Snippeting for the corresponding attribute.

      • value (string): Markup text with occurrences highlighted and optional ellipsis indicators. The tags used for highlighting are specified via highlightPreTag and highlightPostTag. The text used to indicate ellipsis is specified via snippetEllipsisText.

      • matchLevel (string, enum) = {none | partial | full}: Indicates how well the attribute matched the search query.

  • _rankingInfo (object, optional): Ranking information. Note: Only returned when getRankingInfo is true.

    • nbTypos (integer): Number of typos encountered when matching the record. Corresponds to the typos ranking criterion in the ranking formula.

    • firstMatchedWord (integer): Position of the most important matched attribute in the attributes to index list. Corresponds to the attribute ranking criterion in the ranking formula.

    • proximityDistance (integer): When the query contains more than one word, the sum of the distances between matched words. Corresponds to the proximity criterion in the ranking formula.

    • userScore (integer): Custom ranking for the object, expressed as a single numerical value. Conceptually, it's what the position of the object would be in the list of all objects sorted by custom ranking. Corresponds to the custom criterion in the ranking formula.

    • geoDistance (integer): Distance between the geo location in the search query and the best matching geo location in the record, divided by the geo precision.

    • geoPrecision (integer): Precision used when computed the geo distance, in meters. All distances will be floored to a multiple of this precision.

    • nbExactWords (integer): Number of exactly matched words. If alternativeAsExact is set, it may include plurals and/or synonyms.

    • words (integer): Number of matched words, including prefixes and typos.

    • filters (integer): This field is reserved for advanced usage. It will be zero in most cases.

  • _distinctSeqID (integer): Note: Only returned when distinct is non-zero. When two consecutive results have the same value for the attribute used for "distinct", this field is used to distinguish between them.

• nbHits (integer): Number of hits that the search query matched.

• page (integer): Index of the current page (zero-based). See the page search parameter. Note: Not returned if you use offset/length for pagination.

• hitsPerPage (integer): Maximum number of hits returned per page. See the hitsPerPage search parameter. Note: Not returned if you use offset/length for pagination.

• nbPages (integer): Number of pages corresponding to the number of hits. Basically, ceil(nbHits / hitsPerPage). Note: Not returned if you use offset/length for pagination.

• processingTimeMS (integer): Time that the server took to process the request, in milliseconds. Note: This does not include network time.

• query (string): An echo of the query text. See the query search parameter.

• queryAfterRemoval (string, optional): Note: Only returned when removeWordsIfNoResults is set to lastWords or firstWords. A markup text indicating which parts of the original query have been removed in order to retrieve a non-empty result set. The removed parts are surrounded by <em> tags.

• params (string, URL-encoded): An echo of all search parameters.

• message (string, optional): Used to return warnings about the query.

• aroundLatLng (string, optional): Note: Only returned when aroundLatLngViaIP is set. The computed geo location. Warning: for legacy reasons, this parameter is a string and not an object. Format: ${lat},${lng}, where the latitude and longitude are expressed as decimal floating point numbers.

• automaticRadius (integer, optional): Note: Only returned for geo queries without an explicitly specified radius (see aroundRadius). The automatically computed radius. Warning: for legacy reasons, this parameter is a string and not an integer.

When getRankingInfo is set to true, the following additional fields are returned:

• serverUsed (string): Actual host name of the server that processed the request. (Our DNS supports automatic failover and load balancing, so this may differ from the host name used in the request.)

• parsedQuery (string): The query string that will be searched, after normalization. Normalization includes removing stop words (if removeStopWords is enabled), and transforming portions of the query string into phrase queries (see advancedSyntax).

• timeoutCounts (boolean): Whether a timeout was hit when computing the facet counts. When true, the counts will be interpolated (i.e. approximate). See also exhaustiveFacetsCount.

• timeoutHits (boolean): Whether a timeout was hit when retrieving the hits. When true, some results may be missing.

... and ranking information is also added to each of the hits (see above).

When facets is non-empty, the following additional fields are returned:

• facets (object): Maps each facet name to the corresponding facet counts:

  • ${facet_name} (object): Facet counts for the corresponding facet name:

    • ${facet_value} (integer): Count for this facet value.

• facets_stats (object, optional): Note: Only returned when at least one of the returned facets contains numerical values. Statistics for numerical facets:

  • ${facet_name} (object): The statistics for a given facet:

    • min (integer | float): The minimum value in the result set.

    • max (integer | float): The maximum value in the result set.

    • avg (integer | float): The average facet value in the result set.

    • sum (integer | float): The sum of all values in the result set.

• exhaustiveFacetsCount (boolean): Whether the counts are exhaustive (true) or approximate (false). Note: When using distinct, the facet counts cannot be exhaustive.

Here is the list of parameters you can use with the search method (search scope): Parameters that can also be used in a setSettings also have the indexing scope

Search

• query search

Attributes

• attributesToRetrieve settings, search
• restrictSearchableAttributes search

Filtering / Faceting

• filters search
• facets search
• maxValuesPerFacet settings, search

Highlighting / Snippeting

• attributesToHighlight settings, search
• attributesToSnippet settings, search
• highlightPreTag settings, search
• highlightPostTag settings, search
• snippetEllipsisText settings, search
• restrictHighlightAndSnippetArrays settings, search

Pagination

• page search
• hitsPerPage settings, search
• offset search
• length search

Typos

• minWordSizefor1Typo settings, search
• minWordSizefor2Typos settings, search
• typoTolerance settings, search
• allowTyposOnNumericTokens settings, search
• ignorePlurals settings, search
• disableTypoToleranceOnAttributes settings, search

Geo-Search

• aroundLatLng search
• aroundLatLngViaIP search
• aroundRadius search
• aroundPrecision search
• minimumAroundRadius search
• insideBoundingBox search
• insidePolygon search

Query Strategy

• queryType settings, search
• removeWordsIfNoResults settings, search
• advancedSyntax settings, search
• optionalWords settings, search
• removeStopWords settings, search
• disableExactOnAttributes settings, search
• exactOnSingleWordQuery settings, search
• alternativesAsExact settings, search

Advanced

• distinct settings, search
• getRankingInfo search
• numericFilters (deprecated) search
• tagFilters (deprecated) search
• facetFilters (deprecated) search
• analytics search
• analyticsTags search
• synonyms search
• replaceSynonymsInHighlight search, settings
• minProximity search, settings

You can send multiple queries with a single API call using a batch of queries:

// perform 3 queries in a single API call:
//  - 1st query targets index `categories`
//  - 2nd and 3rd queries target index `products`
$queries = [
    ['indexName' => 'categories', 'query' => $myQueryString, 'hitsPerPage' => 3],
    ['indexName' => 'products', 'query' => $myQueryString, 'hitsPerPage' => 3, 'facetFilters' => 'promotion'],
    ['indexName' => 'products', 'query' => $myQueryString, 'hitsPerPage' => 10]
];

$results = $client->multipleQueries($queries);

var_dump(results['results']):

You can specify a strategy parameter to optimize your multiple queries:

• none: Execute the sequence of queries until the end.
• stopIfEnoughMatches: Execute the sequence of queries until the number of hits is reached by the sum of hits.

The resulting JSON contains the following fields:

• results (array): The results for each request, in the order they were submitted. The contents are the same as in Search in an index.

  Each result also includes the following additional fields:

  • index (string): The name of the targeted index.

  • processed (boolean, optional): Note: Only returned when strategy is stopIfEnoughmatches. Whether the query was processed.

You can easily retrieve an object using its objectID and optionally specify a comma separated list of attributes you want:

// Retrieves all attributes
$index->getObject('myID');

// Retrieves firstname and lastname attributes
$index->getObject('myID', 'firstname,lastname');

// Retrieves only the firstname attribute
$index->getObject('myID', 'firstname');

You can also retrieve a set of objects:

$index->getObjects(['myID1', 'myID2']);

Each entry in an index has a unique identifier called objectID. There are two ways to add an entry to the index:

1. Supplying your own objectID.
2. Using automatic objectID assignment. You will be able to access it in the answer.

You don't need to explicitly create an index, it will be automatically created the first time you add an object. Objects are schema less so you don't need any configuration to start indexing. If you wish to configure things, the settings section provides details about advanced settings.

Example with automatic objectID assignments:

$res = $index->addObjects(
    [
        [
            'firstname' => 'Jimmie',
            'lastname'  => 'Barninger'
        ],
        [
            'firstname' => 'Warren',
            'lastname'  => 'myID1'
        ]
    ]
);

Example with manual objectID assignments:

$res = $index->addObjects(
    [
        [
            'objectID' => '1',
            'firstname' => 'Jimmie',
            'lastname'  => 'Barninger'
        ],
        [
            'objectID' => '2',
            'firstname' => 'Warren',
            'lastname'  => 'myID1'
        ]
    ]
);

To add a single object, use the [Add object](#add-object---addobject) method:

$res = $index->addObject(
    [
        'firstname' => 'Jimmie',
        'lastname'  => 'Barninger'
    ],
    'myID'
);
echo 'objectID=' . $res['objectID'] . "\n";

You have three options when updating an existing object:

1. Replace all its attributes.
2. Replace only some attributes.
3. Apply an operation to some attributes.

Example on how to replace all attributes existing objects:

$res = $index->saveObjects(
    [
        [
            'firstname' => 'Jimmie',
            'lastname'  => 'Barninger',
            'objectID'  => 'SFO'
        ],
        [
            'firstname' => 'Warren',
            'lastname'  => 'Speach',
            'objectID'  => 'myID2'
        ]
    ]
);

To update a single object, you can use the `Update object method:

$index->saveObject(
    [
        'firstname' => 'Jimmie',
        'lastname'  => 'Barninger',
        'city'      => 'New York',
        'objectID'  => 'myID'
    ]
);

You have many ways to update an object's attributes:

1. Set the attribute value
2. Add a string or number element to an array
3. Remove an element from an array
4. Add a string or number element to an array if it doesn't exist
5. Increment an attribute
6. Decrement an attribute

Example to update only the city attribute of an existing object:

$index->partialUpdateObject(
    [
        'city'     => 'San Francisco',
        'objectID' => 'myID'
    ]
);

Example to add a tag:

$index->partialUpdateObject(
    [
        '_tags'    => ['value' => 'MyTag', '_operation' => 'Add'],
        'objectID' => 'myID'
    ]
);

Example to remove a tag:

$index->partialUpdateObject(
    [
        '_tags'    => ['value' => 'MyTag', '_operation' => 'Remove'],
        'objectID' => 'myID'
    ]
);

Example to add a tag if it doesn't exist:

$index->partialUpdateObject(
    [
        '_tags'    => ['value' => 'MyTag', '_operation' => 'AddUnique'],
        'objectID' => 'myID'
    ]
);

Example to increment a numeric value:

$index->partialUpdateObject(
    [
        'price'    => ['value' => 42, '_operation' => 'Increment'],
        'objectID' => 'myID'
    ]
);

Note: Here we are incrementing the value by 42. To increment just by one, put value:1.

Example to decrement a numeric value:

$index->partialUpdateObject(
    [
        'price'    => ['value' => 42, '_operation' => 'Decrement'],
        'objectID' => 'myID'
    ]
);

Note: Here we are decrementing the value by 42. To decrement just by one, put value:1.

To partial update multiple objects using one API call, you can use the [Partial update objects](#partial-update-objects---partialupdateobjects) method:

$res = $index->partialUpdateObjects(
    [
        [
            'firstname' => 'Jimmie',
            'objectID'  => 'SFO'
        ],
        [
            'firstname' => 'Warren',
            'objectID'  => 'myID2'
        ]
    ]
);

You can delete objects using their objectID:

$res = $index->deleteObjects(["myID1", "myID2"]);

To delete a single object, you can use the [Delete object](#delete-object---deleteobject) method:

$index->deleteObject('myID');

You can delete all objects matching a single query with the following code. Internally, the API client performs the query, deletes all matching hits, and waits until the deletions have been applied.

Take your precautions when using this method. Calling it with an empty query will result in cleaning the index of all its records.

$params = [];
$index->deleteByQuery('John', $params);

All write operations in Algolia are asynchronous by design.

It means that when you add or update an object to your index, our servers will reply to your request with a taskID as soon as they understood the write operation.

The actual insert and indexing will be done after replying to your code.

You can wait for a task to complete using the waitTask method on the taskID returned by a write operation.

For example, to wait for indexing of a new object:

$res = $index->addObject(
    [
        'firstname' => 'Jimmie',
        'lastname'  => 'Barninger'
    ]
);
$index->waitTask($res['taskID']);

If you want to ensure multiple objects have been indexed, you only need to check the biggest taskID.

You can retrieve settings:

$settings = $index->getSettings();
var_dump($settings);

$index->setSettings(array("customRanking" => array("desc(followers)")));

Warning

Performance wise, it's better to do a setSettings before pushing the data

You can forward all settings updates to the slaves of an index by using the forwardToSlaves option:

$index->setSettings(['customRanking' => ['desc(followers)']], true);

Here is the list of parameters you can use with the set settings method (indexing scope)

Parameters that can be overridden at search time also have the search scope

Attributes

• attributesToIndex settings
• attributesForFaceting settings
• attributesToRetrieve settings, search
• unretrievableAttributes settings

Ranking

• ranking settings
• customRanking settings
• slaves settings

Filtering / Faceting

• maxValuesPerFacet settings, search

Highlighting / Snippeting

• attributesToHighlight settings, search
• attributesToSnippet settings, search
• highlightPreTag settings, search
• highlightPostTag settings, search
• snippetEllipsisText settings, search

Pagination

• hitsPerPage settings, search

Typos

• minWordSizefor1Typo settings, search
• minWordSizefor2Typos settings, search
• typoTolerance settings, search
• allowTyposOnNumericTokens settings, search
• ignorePlurals settings, search
• disableTypoToleranceOnAttributes settings, search
• separatorsToIndex settings

Query Strategy

• queryType settings, search
• removeWordsIfNoResults settings, search
• advancedSyntax settings, search
• optionalWords settings, search
• removeStopWords settings, search
• disablePrefixOnAttributes settings
• disableExactOnAttributes settings, search
• exactOnSingleWordQuery settings, search
• alternativesAsExact settings, search

Advanced

• attributeForDistinct settings
• distinct settings, search
• numericAttributesToIndex settings
• allowCompressionOfIntegerArray settings
• altCorrections settings
• placeholders settings

Each parameter in this page has a scope. Depending on the scope, you can use the parameter within the setSettings and/or the search method

They are three scopes:

• settings: The setting can only be used in the setSettings method
• search: The setting can only be used in the search method
• settings search: The setting can be used in the setSettings method and be override in thesearch method

Search

• query search

Attributes

• attributesToIndex settings
• attributesForFaceting settings
• unretrievableAttributes settings
• attributesToRetrieve settings, search
• restrictSearchableAttributes search

Ranking

• ranking settings
• customRanking settings
• slaves settings

Filtering / Faceting

• filters search
• facets search
• maxValuesPerFacet settings, search

Highlighting / Snippeting

• attributesToHighlight settings, search
• attributesToSnippet settings, search
• highlightPreTag settings, search
• highlightPostTag settings, search
• snippetEllipsisText settings, search
• restrictHighlightAndSnippetArrays settings, search

Pagination

• page search
• hitsPerPage settings, search
• offset search
• length search

Typos

• minWordSizefor1Typo settings, search
• minWordSizefor2Typos settings, search
• typoTolerance settings, search
• allowTyposOnNumericTokens settings, search
• ignorePlurals settings, search
• disableTypoToleranceOnAttributes settings, search
• separatorsToIndex settings

Geo-Search

• aroundLatLng search
• aroundLatLngViaIP search
• aroundRadius search
• aroundPrecision search
• minimumAroundRadius search
• insideBoundingBox search
• insidePolygon search

Query Strategy

• queryType settings, search
• removeWordsIfNoResults settings, search
• advancedSyntax settings, search
• optionalWords settings, search
• removeStopWords settings, search
• disablePrefixOnAttributes settings
• disableExactOnAttributes settings, search
• exactOnSingleWordQuery settings, search
• alternativesAsExact settings, search

Advanced

• attributeForDistinct settings
• distinct settings, search
• getRankingInfo search
• numericAttributesToIndex settings
• allowCompressionOfIntegerArray settings
• numericFilters (deprecated) search
• tagFilters (deprecated) search
• facetFilters (deprecated) search
• analytics search
• analyticsTags search
• synonyms search
• replaceSynonymsInHighlight search, settings
• placeholders settings
• altCorrections settings
• minProximity search, settings

• scope: search
• type: string
• default: ""

The instant search query string, used to set the string you want to search in your index. If no query parameter is set, the textual search will match with all the objects.

• scope: settings
• type: array of strings
• default: *

The list of attributes you want index (i.e. to make searchable).

If set to null, all textual and numerical attributes of your objects are indexed. Make sure you updated this setting to get optimal results.

This parameter has two important uses:

1. Limit the attributes to index. For example, if you store the URL of a picture, you want to store it and be able to retrieve it, but you probably don't want to search in the URL.

2. Control part of the ranking. The contents of the attributesToIndex parameter impacts ranking in two complementary ways:

   First, the order in which attributes are listed defines their ranking priority: matches in attributes at the beginning of the list will be considered more important than matches in attributes further down the list. To assign the same priority to several attributes, pass them within the same string, separated by commas. For example, by specifying ["title,"alternative_title", "text"], title and alternative_title will have the same priority, but a higher priority than text.

   Then, within the same attribute, matches near the beginning of the text will be considered more important than matches near the end. You can disable this behavior by wrapping your attribute name inside an unordered() modifier. For example, ["title", "unordered(text)"] will consider all positions inside the text attribute as equal, but positions inside the title attribute will still matter.

Note: To get a full description of how the ranking works, you can have a look at our Ranking guide.

• scope: settings
• type: array of strings
• default: null

The list of attributes you want to use for faceting. All strings within these attributes will be extracted and added as facets. If set to null, no attribute is used for faceting.

• scope: settings
• type: array of strings
• default: null

The list of attributes that cannot be retrieved at query time. This feature allows you to have attributes that are used for indexing and/or ranking but cannot be retrieved.

Warning: For testing purposes, this setting is ignored when you're using the admin API key.

• scope: settings, search
• type: array of strings
• default: *

A string that contains the list of attributes you want to retrieve in order to minimize the size of the JSON answer.

Attributes are separated with a comma (for example "name,address"). You can also use a string array encoding (for example ["name","address"] ). By default, all attributes are retrieved. You can also use * to retrieve all values when an attributesToRetrieve setting is specified for your index.

Note: objectID is always retrieved, even when not specified.

• scope: search
• type: array of strings
• default: attributesToIndex

List of attributes you want to use for textual search (must be a subset of the attributesToIndex index setting). Attributes are separated with a comma such as "name,address". You can also use JSON string array encoding such as encodeURIComponent("[\"name\",\"address\"]"). By default, all attributes specified in the attributesToIndex settings are used to search.

• scope: settings
• type: array of strings
• default: ['typo', 'geo', 'words', 'filters', 'proximity', 'attribute', 'exact', 'custom']

Controls the way results are sorted.

We have nine available criterion:

• typo: Sort according to number of typos.
• geo: Sort according to decreasing distance when performing a geo location based search.
• words: Sort according to the number of query words matched by decreasing order. This parameter is useful when you use the optionalWords query parameter to have results with the most matched words first.
• proximity: Sort according to the proximity of the query words in hits.
• attribute: Sort according to the order of attributes defined by attributesToIndex.
• exact:
  • If the user query contains one word: sort objects having an attribute that is exactly the query word before others. For example, if you search for the TV show "V", you want to find it with the "V" query and avoid getting all popular TV shows starting by the letter V before it.
  • If the user query contains multiple words: sort according to the number of words that matched exactly (not as a prefix).
• custom: Sort according to a user defined formula set in the customRanking attribute.
• asc(attributeName): Sort according to a numeric attribute using ascending order. attributeName can be the name of any numeric attribute in your records (integer, double or boolean).
• desc(attributeName): Sort according to a numeric attribute using descending order. attributeName can be the name of any numeric attribute in your records (integer, double or boolean).

To get a full description of how the Ranking works, you can have a look at our Ranking guide.

• scope: settings
• type: array of strings
• default: []

Lets you specify part of the ranking.

The syntax of this condition is an array of strings containing attributes prefixed by the asc (ascending order) or desc (descending order) operator.

For example, "customRanking" => ["desc(population)", "asc(name)"].

To get a full description of how the Custom Ranking works, you can have a look at our Ranking guide.

• scope: settings
• type: array of strings
• default: []

The list of indices on which you want to replicate all write operations.

In order to get response times in milliseconds, we pre-compute part of the ranking during indexing.

If you want to use different ranking configurations depending of the use case, you need to create one index per ranking configuration.

This option enables you to perform write operations only on this index and automatically update slave indices with the same operations.

• scope: search
• type: string
• default: ""

Filter the query with numeric, facet or/and tag filters.

The syntax is a SQL like syntax, you can use the OR and AND keywords. The syntax for the underlying numeric, facet and tag filters is the same than in the other filters:

available=1 AND (category:Book OR NOT category:Ebook) AND _tags:public date: 1441745506 TO 1441755506 AND inStock > 0 AND author:"John Doe"

If no attribute name is specified, the filter applies to _tags.

For example: public OR user_42 will translate to _tags:public OR _tags:user_42.

The list of keywords is:

• OR: create a disjunctive filter between two filters.
• AND: create a conjunctive filter between two filters.
• TO: used to specify a range for a numeric filter.
• NOT: used to negate a filter. The syntax with the - isn’t allowed.

Note: To specify a value with spaces or with a value equal to a keyword, it's possible to add quotes.

Warnings:

• Like for the other filters (for performance reasons), it's not possible to have FILTER1 OR (FILTER2 AND FILTER3).
• It is not possible to mix different categories of filters inside an OR like: num=3 OR tag1 OR facet:value.
• It is not possible to negate a group; only individual filters can be negated: NOT(FILTER1 OR (FILTER2)) is not allowed.

• scope: search
• type: string
• default: ""

You can use facets to retrieve only a part of your attributes declared in attributesForFaceting attributes. It will not filter your results, if you want to filter results you should use filters.

For each of the declared attributes, you'll be able to retrieve a list of the most relevant facet values, and their associated count for the current query.

Example

If you have defined in your attributesForFaceting:

["category", "author", "nb_views", "nb_downloads"]

... but, for the current search, you want to retrieve facet values only for category and author, then you can specify:

["category", "author"]

Warnings

• When using facets in a search query, only attributes that have been added in attributesForFaceting index setting can be used in this parameter. You can also use * to perform faceting on all attributes specified in attributesForFaceting. If the number of results is important, the count can be approximate, the attribute exhaustiveFacetsCount in the response is true when the count is exact.

• scope: settings, search
• type: integer
• default: ""

Limit the number of facet values returned for each facet.

For example, maxValuesPerFacet=10 will retrieve a maximum of 10 values per facet.

Warnings

• The engine has a hard limit on the maxValuesPerFacet of 1000. Any value above that will be interpreted by the engine as being 1000.

• scope: settings, search
• type: array of strings
• default: null

Default list of attributes to highlight. If set to null, all indexed attributes are highlighted.

A string that contains the list of attributes you want to highlight according to the query. Attributes are separated by commas. You can also use a string array encoding (for example ["name","address"]). If an attribute has no match for the query, the raw value is returned. By default, all indexed attributes are highlighted (as long as they are strings). You can use * if you want to highlight all attributes.

A matchLevel is returned for each highlighted attribute and can contain:

• full: If all the query terms were found in the attribute.
• partial: If only some of the query terms were found.
• none: If none of the query terms were found.

• scope: settings, search
• type: array of strings
• default: null

Default list of attributes to snippet alongside the number of words to return (syntax is attributeName:nbWords). If set to null, no snippet is computed.

• scope: settings, search
• type: string
• default: <em>

Specify the string that is inserted before the highlighted parts in the query result (defaults to <em>).

• scope: settings, search
• type: string
• default: </em>

Specify the string that is inserted after the highlighted parts in the query result (defaults to </em>).

• scope: settings, search
• type: string
• default: …

String used as an ellipsis indicator when a snippet is truncated.

Note: Defaults to an empty string for all accounts created before 10/2/2016, and to … (U+2026) for accounts created after that date.

• scope: settings, search
• type: boolean
• default: false

If set to true, restrict arrays in highlights and snippets to items that matched the query at least partially else return all array items in highlights and snippets.

• scope: search
• type: integer
• default: 0

Pagination parameter used to select the page to retrieve.

Warning: Page is zero based. Thus, to retrieve the 10th page, you need to set page=9.

• scope: settings, search
• type: integer
• default: 20

Pagination parameter used to select the number of hits per page.

• scope: search
• type: integer
• default: null

Offset of the first hit to return (zero-based).

Warning: In most cases, page/hitsPerPage is the recommended method for pagination; offset/length is reserved for advanced use.

• scope: search
• type: integer
• default: null

Number of hits to return.

Warning: In most cases, page/hitsPerPage is the recommended method for pagination; offset/length is reserved for advanced use.

• scope: settings, search
• type: integer
• default: 4

The minimum number of characters needed to accept one typo.

• scope: settings, search
• type: integer
• default: 8

The minimum number of characters needed to accept two typos.

• scope: settings, search
• type: boolean
• default: true

This option allows you to control the number of typos allowed in the result set:

• true: The typo tolerance is enabled and all matching hits are retrieved (default behavior).
• false: The typo tolerance is disabled. All results with typos will be hidden.
• min: Only keep results with the minimum number of typos. For example, if one result matches without typos, then all results with typos will be hidden.
• strict: Hits matching with 2 typos are not retrieved if there are some matching without typos.

• scope: settings, search
• type: boolean
• default: true

If set to false, disables typo tolerance on numeric tokens (numbers).

• scope: settings, search
• type: boolean
• default: false

If set to true, plural won't be considered as a typo. For example, car and cars, or foot and feet will be considered as equivalent. Defaults to false.

• scope: settings, search
• type: string
• default: ""

List of attributes on which you want to disable typo tolerance (must be a subset of the attributesToIndex index setting).

Attributes are separated with a comma such as "name,address". You can also use JSON string array encoding such as encodeURIComponent("[\"name\",\"address\"]").

• scope: settings
• type: string
• default: ""

Specify the separators (punctuation characters) to index.

By default, separators are not indexed.

Example: Use +# to be able to search for "Google+" or "C#".

Geo search requires that you provide at least one geo location in each record at indexing time, under the _geoloc attribute. Each location must be an object with two numeric lat and lng attributes. You may specify either one location:

{
  "_geoloc": {
    "lat": 48.853409,
    "lng": 2.348800
  }
}

... or an array of locations:

{
  "_geoloc": [
    {
      "lat": 48.853409,
      "lng": 2.348800
    },
    {
      "lat": 48.547456,
      "lng": 2.972075
    }
  ]
}

• scope: search
• type: string
• default: ``

Search for entries around a given location (specified as two floats separated by a comma).

For example, aroundLatLng=47.316669,5.016670.

• By default the maximum distance is automatically guessed based on the density of the area but you can specify it manually in meters with the aroundRadius parameter. The precision for ranking can be set with aroundPrecision parameter.
• If you set aroundPrecision=100, the distances will be considered by ranges of 100m.
• For example all distances 0 and 100m will be considered as identical for the "geo" ranking parameter.

When aroundRadius is not set, the radius is computed automatically using the density of the area; you can retrieve the computed value in the automaticRadius attribute of the response. You can also use the minimumAroundRadius query parameter to specify a minimum radius in meters for the automatic computation of aroundRadius.

• scope: search
• type: string
• default: false

Search for entries around a given latitude/longitude automatically computed from user IP address.

To enable it, use aroundLatLngViaIP=true.

You can specify the maximum distance in meters with the aroundRadius parameter and the precision for ranking with aroundPrecision.

For example:

• if you set aroundPrecision=100, two objects that are in the range 0-99m will be considered as identical in the ranking for the "geo" ranking parameter (same for 100-199, 200-299, ... ranges).

• scope: search
• type: integer, "all"
• default: null

Control the radius associated with a geo search. Defined in meters.

If not set, the radius is computed automatically using the density of the area. You can retrieve the computed radius in the automaticRadius attribute of the response. You can also specify a minimum value for the automatic radius by using the minimumAroundRadius query parameter. You can specify aroundRadius=all if you want to compute the geo distance without filtering in a geo area; this option will be faster than specifying a big integer value.

• scope: search
• type: integer
• default: null

Control the precision of a geo search. Defined in meters. For example, if you set aroundPrecision=100, two objects that are in the range 0-99m will be considered as identical in the ranking for the geo ranking parameter (same for 100-199, 200-299, … ranges).

• scope: search
• type: integer
• default: null

Define the minimum radius used for a geo search when aroundRadius is not set. The radius is computed automatically using the density of the area. You can retrieve the computed radius in the automaticRadius attribute of the answer.

• scope: search
• type: string
• default: null

Search entries inside a given area defined by the two extreme points of a rectangle (defined by 4 floats: p1Lat,p1Lng,p2Lat,p2Lng). For example:

• insideBoundingBox=47.3165,4.9665,47.3424,5.0201

You can use several bounding boxes (OR) by passing more than 4 values. For example: instead of having 4 values you can pass 8 to search inside the UNION of two bounding boxes.

• scope: search
• type: string
• default: ``

Search entries inside a given area defined by a set of points (defined by a minimum of 6 floats: p1Lat,p1Lng,p2Lat,p2Lng,p3Lat,p3Long).

For example: InsidePolygon=47.3165,4.9665,47.3424,5.0201,47.32,4.98).

• scope: settings, search
• type: enum
• default: 'prefixLast'

Selects how the query words are interpreted. It can be one of the following values:

• prefixAll: All query words are interpreted as prefixes. This option is not recommended.
• prefixLast: Only the last word is interpreted as a prefix (default behavior).
• prefixNone: No query word is interpreted as a prefix. This option is not recommended.

• scope: settings, search
• type: string
• default: 'none'

This option is used to select a strategy in order to avoid having an empty result page. There are four different options:

• lastWords: When a query does not return any results, the last word will be added as optional. The process is repeated with n-1 word, n-2 word, ... until there are results.
• firstWords: When a query does not return any results, the first word will be added as optional. The process is repeated with second word, third word, ... until there are results.
• allOptional: When a query does not return any results, a second trial will be made with all words as optional. This is equivalent to transforming the AND operand between query terms to an OR operand.
• none: No specific processing is done when a query does not return any results (default behavior).

• scope: settings, search
• type: boolean
• default: false

Enables the advanced query syntax.

This syntax allow to do two things:

• Phrase query: A phrase query defines a particular sequence of terms. A phrase query is built by Algolia's query parser for words surrounded by ". For example, "search engine" will retrieve records having search next to engine only. Typo tolerance is disabled on phrase queries.
• Prohibit operator: The prohibit operator excludes records that contain the term after the - symbol. For example, search -engine will retrieve records containing search but not engine.

• scope: settings, search
• type: array of strings
• default: []

A string that contains the comma separated list of words that should be considered as optional when found in the query.

• scope: settings, search
• type: boolean, array of strings
• default: false

Remove stop words from the query before executing it. It can be:

• a boolean: enable or disable stop words for all 41 supported languages; or
• a list of language ISO codes (as a comma-separated string) for which stop words should be enabled.

In most use-cases, we don’t recommend enabling this option.

List of 41 supported languages with their associated iso code: Arabic=ar, Armenian=hy, Basque=eu, Bengali=bn, Brazilian=pt-br, Bulgarian=bg, Catalan=ca, Chinese=zh, Czech=cs, Danish=da, Dutch=nl, English=en, Finnish=fi, French=fr, Galician=gl, German=de, Greek=el, Hindi=hi, Hungarian=hu, Indonesian=id, Irish=ga, Italian=it, Japanese=ja, Korean=ko, Kurdish=ku, Latvian=lv, Lithuanian=lt, Marathi=mr, Norwegian=no, Persian (Farsi)=fa, Polish=pl, Portugese=pt, Romanian=ro, Russian=ru, Slovak=sk, Spanish=es, Swedish=sv, Thai=th, Turkish=tr, Ukranian=uk, Urdu=ur.

Stop words removal is applied on query words that are not interpreted as a prefix. The behavior depends of the queryType parameter:

• queryType=prefixLast means the last query word is a prefix and it won’t be considered for stop words removal
• queryType=prefixNone means no query word are prefix, stop words removal will be applied on all query words
• queryType=prefixAll means all query terms are prefix, stop words won’t be removed

This parameter is useful when you have a query in natural language like “what is a record?”. In this case, before executing the query, we will remove “what”, “is” and “a” in order to just search for “record”. This removal will remove false positive because of stop words, especially when combined with optional words. For most use cases, it is better to not use this feature as people search by keywords on search engines.

• scope: settings
• type: array of strings
• default: []

List of attributes on which you want to disable prefix matching (must be a subset of the attributesToIndex index setting).

This setting is useful on attributes that contain string that should not be matched as a prefix (for example a product SKU).

• scope: settings, search
• type: array of strings
• default: []

List of attributes on which you want to disable the computation of exact criteria (must be a subset of the attributesToIndex index setting).

• scope: settings, search
• type: string
• default: attribute

This parameter control how the exact ranking criterion is computed when the query contains one word. There are three different values:

• none: no exact on single word query
• word: exact set to 1 if the query word is found in the record. The query word needs to have at least 3 chars and not be part of our stop words dictionary
• attribute (default): exact set to 1 if there is an attribute containing a string equals to the query

• scope: settings, search
• type: string
• default: ['ignorePlurals', 'singleWordSynonym']

Specify the list of approximation that should be considered as an exact match in the ranking formula:

• ignorePlurals: alternative words added by the ignorePlurals feature
• singleWordSynonym: single-word synonym (For example "NY" = "NYC")
• multiWordsSynonym: multiple-words synonym (For example "NY" = "New York")

• scope: settings
• type: string
• default: null

The name of the attribute used for the Distinct feature.

This feature is similar to the SQL "distinct" keyword. When enabled in queries with the distinct=1 parameter, all hits containing a duplicate value for this attribute are removed from the results.

For example, if the chosen attribute is show_name and several hits have the same value for show_name, then only the first one is kept and the others are removed from the results.

To get a full understanding of how Distinct works, you can have a look at our guide on distinct.

• scope: settings, search
• type: integer
• default: 0

If set to 1, enables the distinct feature, disabled by default, if the attributeForDistinct index setting is set.

This feature is similar to the SQL "distinct" keyword. When enabled in a query with the distinct=1 parameter, all hits containing a duplicate value for the attributeForDistinct attribute are removed from results.

For example, if the chosen attribute is show_name and several hits have the same value for show_name, then only the best one is kept and the others are removed.

To get a full understanding of how Distinct works, you can have a look at our guide on distinct.

• scope: search
• type: boolean
• default: false

If set to true, the result hits will contain ranking information in the _rankingInfo attribute.

• scope: settings
• type: array of strings
• default: ``

All numerical attributes are automatically indexed as numerical filters (allowing filtering operations like < and <=). If you don't need filtering on some of your numerical attributes, you can specify this list to speed up the indexing.

If you only need to filter on a numeric value with the = operator, you can speed up the indexing by specifying the attribute with equalOnly(AttributeName). The other operators will be disabled.

• scope: settings
• type: boolean
• default: false

Allows compression of big integer arrays.

In data-intensive use-cases, we recommended enabling this feature and then storing the list of user IDs or rights as an integer array. When enabled, the integer array is reordered to reach a better compression ratio.

• scope: search
• type: array of strings
• default: []

This parameter is deprecated. Please use filters instead.

A string that contains the comma separated list of numeric filters you want to apply. The filter syntax is attributeName followed by operand followed by value. Supported operands are <, <=, =, > and >=.

You can easily perform range queries via the : operator. This is equivalent to combining a >= and <= operand.

For example, numericFilters=price:10 to 1000.

You can also mix OR and AND operators. The OR operator is defined with a parenthesis syntax.

For example, (code=1 AND (price:[0-100] OR price:[1000-2000])) translates to encodeURIComponent("code=1,(price:0 to 100,price:1000 to 2000)").

You can also use a string array encoding (for example numericFilters: ["price>100","price<1000"]).

• scope: search
• type: string
• default: ""

This parameter is deprecated. Please use filters instead.

Filter the query by a set of tags.

You can AND tags by separating them with commas. To OR tags, you must add parentheses.

For example, tagFilters=tag1,(tag2,tag3) means tag1 AND (tag2 OR tag3).

You can also use a string array encoding.

For example, tagFilters: ["tag1",["tag2","tag3"]] means tag1 AND (tag2 OR tag3).

Negations are supported via the - operator, prefixing the value.

For example: tagFilters=tag1,-tag2.

At indexing, tags should be added in the _tags attribute of objects.

For example {"_tags":["tag1","tag2"]}.

• scope: search
• type: string
• default: ""

This parameter is deprecated. Please use filters instead.

Filter the query with a list of facets. Facets are separated by commas and is encoded as attributeName:value. To OR facets, you must add parentheses.

For example: facetFilters=(category:Book,category:Movie),author:John%20Doe.

You can also use a string array encoding.

For example, [["category:Book","category:Movie"],"author:John%20Doe"].

• scope: search
• type: boolean
• default: true

If set to false, this query will not be taken into account in the analytics feature.

• scope: search
• type: array of strings
• default: null

If set, tag your query with the specified identifiers. Tags can then be used in the Analytics to analyze a subset of searches only.

• scope: search
• type: boolean
• default: true

If set to false, the search will not use the synonyms defined for the targeted index.

• scope: search, settings
• type: boolean
• default: true

If set to false, words matched via synonym expansion will not be replaced by the matched synonym in the highlighted result.

• scope: settings
• type: hash of array of words
• default: ``

This is an advanced use-case to define a token substitutable by a list of words without having the original token searchable.

It is defined by a hash associating placeholders to lists of substitutable words.

For example, "placeholders": { "<streetnumber>": ["1", "2", "3", ..., "9999"]} would allow it to be able to match all street numbers. We use the < > tag syntax to define placeholders in an attribute.

For example:

• Push a record with the placeholder: { "name" : "Apple Store", "address" : "<streetnumber> Opera street, Paris" }.
• Configure the placeholder in your index settings: "placeholders": { "<streetnumber>" : ["1", "2", "3", "4", "5", ... ], ... }.

• scope: settings
• type: array of objects
• default: []

Specify alternative corrections that you want to consider.

Each alternative correction is described by an object containing three attributes:

• word (string): The word to correct.
• correction (string): The corrected word.
• nbTypos (integer): The number of typos (1 or 2) that will be considered for the ranking algorithm (1 typo is better than 2 typos).

For example:

"altCorrections": [
  { "word" : "foot", "correction": "feet", "nbTypos": 1 },
  { "word": "feet", "correction": "foot", "nbTypos": 1 }
]

• scope: search, settings
• type: integer
• default: 1

Configure the precision of the proximity ranking criterion. By default, the minimum (and best) proximity value distance between 2 matching words is 1. Setting it to 2 (or 3) would allow 1 (or 2) words to be found between the matching words without degrading the proximity ranking value.

Considering the query “javascript framework”, if you set minProximity=2, the records “JavaScript framework” and “JavaScript charting framework” will get the same proximity score, even if the second contains a word between the two matching words.

Note: the maximum minProximity that can be set is 7. Any higher value will disable the proximity criterion from the ranking formula.

To create an index, you need to perform any indexing operation like:

• set settings
• add object

You can list all your indices along with their associated information (number of entries, disk size, etc.) with the listIndexes method:

var_dump($client->listIndexes());

You can delete an index using its name:

$client->deleteIndex('contacts');

You can delete the index contents without removing settings and index specific API keys by using the clearIndex command:

$index->clearIndex();

You can copy an existing index using the copy command.

Warning: The copy command will overwrite the destination index.

// Copy MyIndex in MyIndexCopy
$res = $client->copyIndex('MyIndex', 'MyIndexCopy');

In some cases, you may want to totally reindex all your data. In order to keep your existing service running while re-importing your data we recommend the usage of a temporary index plus an atomical move using the moveIndex method.

// Rename MyNewIndex in MyIndex (and overwrite it)
$res = $client->moveIndex('MyNewIndex', 'MyIndex');

Note:

The moveIndex method will overwrite the destination index, and delete the temporary index.

Warning

The moveIndex operation will override all settings of the destination, There is one exception for the slaves parameter which is not impacted.

For example, if you want to fully update your index MyIndex every night, we recommend the following process:

1. Get settings and synonyms from the old index using Get settings and Get synonym.
2. Apply settings and synonyms to the temporary index MyTmpIndex, (this will create the MyTmpIndex index) using Set settings and Batch synonyms (make sure to remove the slaves parameter from the settings if it exists).
3. Import your records into a new index using Add objects.
4. Atomically replace the index MyIndex with the content and settings of the index MyTmpIndex using the Move index method. This will automatically override the old index without any downtime on the search.
5. You'll end up with only one index called MyIndex, that contains the records and settings pushed to MyTmpIndex and the slave-indices that were initially attached to MyIndex will be in sync with the new data.

When creating your Algolia Account, you'll notice there are 3 different API Keys:

• Admin API Key - it provides full control of all your indices. The admin API key should always be kept secure; do NOT give it to anybody; do NOT use it from outside your back-end as it will allow the person who has it to query/change/delete data

• Search-Only API Key - It allows you to search on every indices.

• Monitoring API Key - It allows you to access the Monitoring API

The Admin API Key and Search-Only API Key both have really large scope and sometimes you want to give a key to someone that have restricted permissions, can it be an index, a rate limit, a validity limit, ...

To address those use-cases we have two differents type of keys:

• Secured API Keys

When you need to restrict the scope of the Search Key, we recommend to use Secured API Key. You can generate them on the fly (without any call to the API) from the Search Only API Key or any search User Key using the Generate key method

• User API Keys

If Secured API Keys does not meet your requirements, you can make use of User keys. Managing and especially creating those keys requires a call to the API.

We have several methods to manage them:

• Add user key
• Update user key
• Delete user key
• List api keys
• Get key permissions

When you need to restrict the scope of the Search Key, we recommend to use Secured API Key. You can generate a Secured API Key from the Search Only API Key or any search User API Key

There is a few things to know about about Secured API Keys

• They always need to be generated on your backend using one of our API Client
• You can generate them on the fly (without any call to the API)
• They will not appear on the dashboard as they are generated without any call to the API
• The key you use to generate it needs to become private and you should not use it in your frontend.
• The generated secured API key will inherit any restriction from the search key it has been generated from

You can then use the key in your frontend code

var client = algoliasearch('YourApplicationID', '<%= public_api_key %>');

var index = client.initIndex('indexName')

index.search('something', function(err, content) {
  if (err) {
    console.error(err);
    return;
  }

  console.log(content);
});

Every filter set in the API key will always be applied. On top of that filters can be applied in the query parameters.

// generate a public API key for user 42. Here, records are tagged with:
//  - 'user_XXXX' if they are visible by user XXXX
$public_key = \AlgoliaSearch\Client::generateSecuredApiKey('SearchApiKey', ['filters' => '_tags:user_42']);

Warning:

If you set filters in the key groups:admin, and groups:press OR groups:visitors in the query parameters, this will be equivalent to groups:admin AND (groups:press OR groups:visitors)

One of the usage of secured API keys, is to have allow users to see only part of an index, when this index contains the data of all users. In that case, you can tag all records with their associated user_id in order to add a user_id=42 filter when generating the Secured API Key to retrieve only what a user is tagged in.

Warning If you're generating Secured API Keys using the JavaScript client in your frontend, it will result in a security breach since the user is able to modify the tagFilters you've set by modifying the code from the browser.

You can set a Unix timestamp used to define the expiration date of the API key

# generate a public API key that is valid for 1 hour:
$validUntil = Time.now.to_i + 3600
$public_key = \AlgoliaSearch\Client::generateSecuredApiKey('SearchApiKey', ['validUntil' => $validUntil]);

You can restrict the key to a list of index names allowed for the secured API key

# generate a public API key that is restricted to 'index1' and 'index2':
$public_key = \AlgoliaSearch\Client::generateSecuredApiKey('SearchApiKey', ['restrictIndices' => 'index1,index2']);

If you want to rate limit a secured API Key, the API key you generate the secured api key from need to be rate-limited. You can do that either via the dashboard or via the API using the Add user key or Update user key method

By default the rate limits will only use the IP.

This can be an issue when several of your end users are using the same IP. To avoid that, you can set a userToken query parameter when generating the key.

When set, a unique user will be identified by his IP + user_token instead of only by his IP.

This allows you to restrict a single user to performing a maximum of N API calls per hour, even if he shares his IP with another user.

// generate a public API key for user 42. Here, records are tagged with:
//  - 'user_XXXX' if they are visible by user XXXX
$public_key = $client->generateSecuredApiKey(
    'YourSearchOnlyApiKey',
    ['filters' => 'user_42', 'userToken' => 'user_42']
);

For more protection against API key leaking and reuse you can restrict the key to be valid only from specific IPv4 networks

# generate a public API key that is restricted to '192.168.1.0/24':
$public_key = \AlgoliaSearch\Client::generateSecuredApiKey('SearchApiKey', ['restrictSources' => '192.168.1.0/24']);

This method saves a single synonym record into the index.

In this example, we specify true to forward the creation to slave indices. By default the behavior is to save only on the specified index.

$index->saveSynonym("a-unique-identifier", array(
  "objectID" => "a-unique-identifier",
  "type" => "synonym",
  "synonyms" => array("car", "vehicle", "auto")
), true);

Use the batch method to create a large number of synonyms at once, forward them to slave indices if desired, and optionally replace all existing synonyms on the index with the content of the batch using the replaceExistingSynonyms parameter.

You should always use replaceExistingSynonyms to atomically replace all synonyms on a production index. This is the only way to ensure the index always has a full list of synonyms to use during the indexing of the new list.

// Batch synonyms, with slave forwarding and atomic replacement of existing synonyms
$index->batchSynonyms(array(array(
  "objectID" => "a-unique-identifier",
  "type" => "synonym",
  "synonyms" => array("car", "vehicle", "auto")
), array(
  "objectID" => "another-unique-identifier",
  "type" => "synonym",
  "synonyms" => array("street", "st")
)), true, true);

Updating the value of a specific synonym record is the same as creating one. Make sure you specify the same objectID used to create the record and the synonyms will be updated. When updating multiple synonyms in a batch call (but not all synonyms), make sure you set replaceExistingSynonyms to false (or leave it out, false is the default value). Otherwise, the entire synonym list will be replaced only partially with the records in the batch update.

Use the normal index delete method to delete synonyms, specifying the objectID of the synonym record you want to delete. Forward the deletion to slave indices by setting the forwardToSlaves parameter to true.

// Delete and forward to slaves
$index->deleteSynonym("a-unique-identifier", true);

This is a convenience method to delete all synonyms at once. It should not be used on a production index to then push a new list of synonyms: there would be a short period of time during which the index would have no synonyms at all.

To atomically replace all synonyms of an index, use the batch method with the replaceExistingSynonyms parameter set to true.

// Clear synonyms and forward to slaves
$index->clearSynonyms(true);

Search for synonym records by their objectID or by the text they contain. Both methods are covered here.

$synonym = $index->getSynonym("a-unique-identifier");

Search for synonym records similar to how you’d search normally.

Accepted search parameters:

• query: the actual search query to find synonyms. Use an empty query to browse all the synonyms of an index.
• type: restrict the search to a specific type of synonym. Use an empty string to search all types (default behavior). Multiple types can be specified using a comma-separated list or an array.
• page: the page to fetch when browsing through several pages of results. This value is zero-based. hitsPerPage: the number of synonyms to return for each call. The default value is 100.

// Searching for "street" in synonyms and one-way synonyms; fetch the second page with 10 hits per page
$results = $index->searchSynonyms("street", array("synonym", "oneWaySynonym"), 1, 10);

You may want to perform multiple operations with one API call to reduce latency.

Custom batch:

$res = $index->batch(
    [
        'requests' => [
            [
                'action' => 'addObject',
                'body'   => ['firstname' => 'Jimmie', 'lastname' => 'Barninger']
            ],
            [
                'action' => 'addObject',
                'body'   => ['Warren' => 'Jimmie', 'lastname' => 'Speach']
            ],
            [
                'action'   => 'updateObject',
                'objectID' => 'myID3',
                'body'     => ['firstname' => 'Rob']
            ],
            [
                'action'   => 'deleteObject',
                'objectID' => 'myID4'
            ]
        ]
    ]
);

If you have one index per user, you may want to perform a batch operations across severals indexes. We expose a method to perform this type of batch:

$res = $index->batch(
    [
        [
            'action'    => 'addObject',
            'indexName' => 'index1',
            [
                'firstname' => 'Jimmie',
                'lastname'  => 'Barninger'
            ]
        ],
        [
            'action'    => 'addObject',
            'indexName' => 'index1',
            [
                'firstname' => 'Warren',
                'lastname'  => 'myID1'
            ]
        ]
    ]
);

The attribute action can have these values:

• addObject
• updateObject
• partialUpdateObject
• partialUpdateObjectNoCreate
• deleteObject

The search method cannot return more than 1,000 results. If you need to retrieve all the content of your index (for backup, SEO purposes or for running a script on it), you should use the browse method instead. This method lets you retrieve objects beyond the 1,000 limit.

This method is optimized for speed. To make it fast, distinct, typo-tolerance, word proximity, geo distance and number of matched words are disabled. Results are still returned ranked by attributes and custom ranking.

It will return a cursor alongside your data, that you can then use to retrieve the next chunk of your records.

You can specify custom parameters (like page or hitsPerPage) on your first browse call, and these parameters will then be included in the cursor. Note that it is not possible to access records beyond the 1,000th on the first call.

{
  "hits": [
    {
      "firstname": "Jimmie",
      "lastname": "Barninger",
      "objectID": "433"
    }
  ],
  "processingTimeMS": 7,
  "query": "",
  "params": "filters=level%3D20",
  "cursor": "ARJmaWx0ZXJzPWxldmVsJTNEMjABARoGODA4OTIzvwgAgICAgICAgICAAQ=="
}

• cursor (string, optional): A cursor to retrieve the next chunk of data. If absent, it means that the end of the index has been reached.

• query (string): Query text used to filter the results.

• params (string, URL-encoded): Search parameters used to filter the results.

• processingTimeMS (integer): Time that the server took to process the request, in milliseconds. Note: This does not include network time.

The following fields are provided for convenience purposes, and only when the browse is not filtered:

• nbHits (integer): Number of objects in the index.

• page (integer): Index of the current page (zero-based).

• hitsPerPage (integer): Maximum number of hits returned per page.

• nbPages (integer): Number of pages corresponding to the number of hits. Basically, ceil(nbHits / hitsPerPage).

// Iterate with a filter over the whole index
foreach ($this->index->browse('', ['filters' => 'i<42']) as $hit) {
    print_r($hit);
}

// Retrieve the next cursor from the browse method
$result = $this->index->browseFrom('', ['filters' => 'i<42']);
var_dump($result['cursor']);

To list existing keys, you can use:

// Lists global API Keys
$client->listUserKeys();

// Lists API Keys that can access only to this index
$index->listUserKeys();

Each key is defined by a set of permissions that specify the authorized actions. The different permissions are:

• search: Allowed to search.
• browse: Allowed to retrieve all index contents via the browse API.
• addObject: Allowed to add/update an object in the index.
• deleteObject: Allowed to delete an existing object.
• deleteIndex: Allowed to delete index content.
• settings: allows to get index settings.
• editSettings: Allowed to change index settings.
• analytics: Allowed to retrieve analytics through the analytics API.
• listIndexes: Allowed to list all accessible indexes.

To create API keys:

// Creates a new global API key that can only perform search actions
$res = $client->addUserKey(['search']);
echo 'key=' . $res['key'] . "\n";

// Creates a new API key that can only perform search action on this index
$res = $index->addUserKey(['search']);
echo 'key=' . $res['key'] . "\n";

You can also create an API Key with advanced settings:

<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>validity</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Add a validity period. The key will be valid for a specific period of time (in seconds).</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>maxQueriesPerIPPerHour</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the maximum number of API calls allowed from an IP address per hour. Each time an API call is performed with this key, a check is performed. If the IP at the source of the call did more than this number of calls in the last hour, a 403 code is returned. Defaults to 0 (no rate limit). This parameter can be used to protect you from attempts at retrieving your entire index contents by massively querying the index.</p>

Note: If you are sending the query through your servers, you must use the enableRateLimitForward("TheAdminAPIKey", "EndUserIP", "APIKeyWithRateLimit") function to enable rate-limit.

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>maxHitsPerQuery</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the maximum number of hits this API key can retrieve in one call. Defaults to 0 (unlimited). This parameter can be used to protect you from attempts at retrieving your entire index contents by massively querying the index.</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>indexes</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the list of targeted indices. You can target all indices starting with a prefix or ending with a suffix using the &#39;*&#39; character. For example, &quot;dev_*&quot; matches all indices starting with &quot;dev_&quot; and &quot;*_dev&quot; matches all indices ending with &quot;_dev&quot;. Defaults to all indices if empty or blank.</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>referers</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the list of referers. You can target all referers starting with a prefix, ending with a suffix using the &#39;*&#39; character. For example, &quot;<a href="https://algolia.com/%5C*">https://algolia.com/\*</a>&quot; matches all referers starting with &quot;<a href="https://algolia.com/">https://algolia.com/</a>&quot; and &quot;*.algolia.com&quot; matches all referers ending with &quot;.algolia.com&quot;. If you want to allow the domain algolia.com you can use &quot;*algolia.com/*&quot;. Defaults to all referers if empty or blank.</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>queryParameters</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the list of query parameters. You can force the query parameters for a query using the url string format (param1=X&amp;param2=Y...).</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>description</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify a description to describe where the key is used.</p>

  </td>
</tr>

// Creates a new index specific API key valid for 300 seconds, with a rate limit of 100 calls per hour per IP and a maximum of 20 hits

$params = [
   'validity'               => 300,
   'maxQueriesPerIPPerHour' => 100,
   'maxHitsPerQuery'        => 20,
   'indexes'                => ['dev_*'],
   'referers'               => ['algolia.com/*'],
   'queryParameters'        => 'typoTolerance=strict&ignorePlurals=false',
   'description'            => 'Limited search only API key for algolia.com'
];

$res = $client->addUserKey(params);
echo 'key=' . $res['key'] . "\n";

To update the permissions of an existing key:

// Update an existing global API key that is valid for 300 seconds
$res = $client->updateUserKey('myAPIKey', ['search'], 300);
echo 'key=' . $res['key'] . "\n";

// Update an existing index specific API key valid for 300 seconds, with a rate limit of 100 calls per hour per IP and a maximum of 20 hits
$res = $index->updateUserKey('myAPIKey', ['search'], 300, 100, 20);
echo 'key=' . $res['key'] . "\n";

To get the permissions of a given key:

// Gets the rights of a global key
$res = $client->getUserKeyACL('f420238212c54dcfad07ea0aa6d5c45f');

// Gets the rights of an index specific key
$res = $index->getUserKeyACL('71671c38001bf3ac857bc82052485107');

To delete an existing key:

// Deletes a global key
$res = $client->deleteUserKey('f420238212c54dcfad07ea0aa6d5c45f');

// Deletes an index specific key
$res = $index->deleteUserKey('71671c38001bf3ac857bc82052485107');

To get the permissions of a given key:

// Gets the rights of a global key
$res = $client->getUserKeyACL('f420238212c54dcfad07ea0aa6d5c45f');

// Gets the rights of an index specific key
$res = $index->getUserKeyACL('71671c38001bf3ac857bc82052485107');

You can retrieve the latest logs via this API. Each log entry contains:

• Timestamp in ISO-8601 format
• Client IP
• Request Headers (API Key is obfuscated)
• Request URL
• Request method
• Request body
• Answer HTTP code
• Answer body
• SHA1 ID of entry

You can retrieve the logs of your last 1,000 API calls and browse them using the offset/length parameters:

<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>offset</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the first entry to retrieve (0-based, 0 is the most recent log entry). Defaults to 0.</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>length</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the maximum number of entries to retrieve starting at the offset. Defaults to 10. Maximum allowed value: 1,000.</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>onlyErrors</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Retrieve only logs with an HTTP code different than 200 or 201. (deprecated)</p>

  </td>
</tr>


<tr>
  <td valign='top'>
    <div class='client-readme-param-container'>
      <div class='client-readme-param-container-inner'>
        <div class='client-readme-param-name'><code>type</code></div>
        
      </div>
    </div>
  </td>
  <td class='client-readme-param-content'>
    <p>Specify the type of logs to retrieve:</p>

• query: Retrieve only the queries.
• build: Retrieve only the build operations.
• error: Retrieve only the errors (same as onlyErrors parameters).

  </td>
</tr>

// Get last 10 log entries
$res = $client->getLogs();

// Get last 100 log entries
$res = $client->getLogs(0, 100);

We've developed API clients for the most common programming languages and platforms. These clients are advanced wrappers on top of our REST API itself and have been made in order to help you integrating the service within your apps: for both indexing and search.

Everything that can be done using the REST API can be done using those clients.

The REST API lets your interact directly with Algolia platforms from anything that can send an HTTP request Go to the REST API doc