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Algolia Search API Client for PHP

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.

Build Status Latest Stable Version Coverage Status

Table of Contents

Getting Started

  1. Setup
  2. Quick Start
  3. Guides & Tutorials

Commands Reference

Getting started

  1. Init Index

Search

  1. Search
  2. Find by id

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 an index
  3. Clear an index
  4. Copy an index
  5. Move an index

Api Keys

  1. Generate API keys

Advanced

  1. Custom batch
  2. Wait for an indexing operation
  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

Guides & Tutorials

Check our online guides:

Getting Started

Install and init - initIndex

To setup your project, follow these steps:

  1. 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).

  1. Next you'll have to initialize the client with your ApplicationID and API-Key. You can find all 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');

Framework Integrations

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

Quick Start

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>

Search

Search in an index - search

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 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' => 'fistname,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"
}

You can use the following optional arguments:

Search Parameters

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

Attributes

Filtering / Faceting

Highlighting / Snippeting

Pagination

Typos

Geo-Search

Query Strategy

Advanced

Find by ids - getObjects

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']);

Indexing

Add objects - addObjects

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

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

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 assignment:

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

Example with manual objectID assignment:

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

Update objects - saveObjects

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 of an existing object:

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

Partial update - partialUpdateObjects

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.

Delete objects - deleteObjects

You can delete an object using its objectID:

$index->deleteObject('myID');

Delete by query - deleteByQuery

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);

Wait for operations - waitTask

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.

Settings

Get settings - getSettings

You can retrieve settings:

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

Set settings - setSettings

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

Slave settings

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

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

Index settings parameters

Here is the list of parameters you can use with the set settings method (indexing scope): Parameters that can be override at search time also have the indexing scope

Attributes

Ranking

Filtering / Faceting

Highlighting / Snippeting

Pagination

Typos

Query Strategy

Advanced

Parameters

Overview

Scope

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

Parameters List

Search

Attributes

Ranking

Filtering / Faceting

Highlighting / Snippeting

Pagination

Typos

Geo-Search

Query Strategy

Advanced

Search

query

  • 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.

Attributes

attributesToIndex

  • scope: settings
  • type: array of strings

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:

  • 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.
  • Control part of the ranking.
    Matches in attributes at the beginning of the list will be considered more important than matches in attributes further down the list. In one attribute, matching text at the beginning of the attribute will be considered more important than text after. You can disable this behavior if you add your attribute inside unordered(AttributeName). For example, attributesToIndex: ["title", "unordered(text)"]. You can decide to have the same priority for two attributes by passing them in the same string using a comma as a separator. For example title and alternative_title have the same priority in this example, which is different than text priority: attributesToIndex:["title,alternative_title", "text"]. To get a full description of how the Ranking works, you can have a look at our Ranking guide.

attributesForFaceting

  • scope: settings
  • type: array of strings

The list of fields you want to use for faceting. All strings in the attribute selected for faceting are extracted and added as a facet. If set to null, no attribute is used for faceting.

unretrievableAttributes

  • 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.

attributesToRetrieve

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

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.

objectID is always retrieved even when not specified.

restrictSearchableAttributes

  • 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.

Ranking

ranking

  • 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.

customRanking

  • 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.

slaves

  • 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.

Filtering / Faceting

filters

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.

Warning:

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

facets

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

List of object attributes that you want to use for faceting.

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.

Attributes are separated by a comma.

For example, "category,author".

You can also use JSON string array encoding.

For example, ["category","author"].

Only the 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.

maxValuesPerFacet

  • 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.

Highlighting / Snippeting

attributesToHighlight

  • 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.

attributesToSnippet

  • 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.

highlightPreTag

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

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

highlightPostTag

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

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

snippetEllipsisText

  • default: ''
  • type: string

String used as an ellipsis indicator when a snippet is truncated. Defaults to an empty string for all accounts created before 10/2/2016, and to … (UTF-8 U+2026) for accounts created after that date.

Pagination

page

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

Pagination parameter used to select the page to retrieve.
Page is zero based and defaults to 0. Thus, to retrieve the 10th page you need to set page=9.

hitsPerPage

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

Pagination parameter used to select the number of hits per page. Defaults to 20.

Typos

minWordSizefor1Typo

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

The minimum number of characters needed to accept one typo.

minWordSizefor2Typos

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

The minimum number of characters needed to accept two typos.

typoTolerance

  • 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.

allowTyposOnNumericTokens

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

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

ignorePlurals

  • 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.

disableTypoToleranceOnAttributes

  • 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\"]").

separatorsToIndex

  • scope: settings
  • type: string
  • default: empty

Specify the separators (punctuation characters) to index.

By default, separators are not indexed.

Use +# to be able to search Google+ or C#.

Geo-Search

aroundLatLng

  • scope: search
  • type: string

Search for entries around a given latitude/longitude (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 radius in the automaticRadius attribute of the answer, you can also use the minimumAroundRadius query parameter to specify a minimum radius in meters for the automatic computation of aroundRadius.

At indexing, you should specify geoloc of an object with the _geoloc attribute (in the form "_geoloc":{"lat":48.853409, "lng":2.348800} or "_geoloc":[{"lat":48.853409, "lng":2.348800},{"lat":48.547456, "lng":2.972075}] if you have several geo-locations in your record).

aroundLatLngViaIP

  • scope: search
  • type: boolean
  • 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).

When indexing, you should specify the geo location of an object with the _geoloc attribute in the form {"_geoloc":{"lat":48.853409, "lng":2.348800}}.

insideBoundingBox

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

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

At indexing, you should specify geoloc of an object with the _geoloc attribute (in the form "_geoloc":{"lat":48.853409, "lng":2.348800} or "_geoloc":[{"lat":48.853409, "lng":2.348800},{"lat":48.547456, "lng":2.972075}] if you have several geo-locations in your record).

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.

insidePolygon

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).

At indexing, you should specify geoloc of an object with the _geoloc attribute (in the form "_geoloc":{"lat":48.853409, "lng":2.348800} or "_geoloc":[{"lat":48.853409, "lng":2.348800},{"lat":48.547456, "lng":2.972075}] if you have several geo-locations in your record).

Query Strategy

queryType

  • scope: settings, search
  • 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.

removeWordsIfNoResults

  • 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).

advancedSyntax

  • scope: settings, search
  • default: 0 (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.

optionalWords

  • scope: settings, search
  • default: []

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

removeStopWords

  • scope: settings, search
  • default: false

Remove stop words from the query before executing it. Defaults to false. Use a boolean to enable/disable all 41 supported languages and a comma separated list of iso codes of the languages you want to use consider to enable the stopwords removal on a subset of them (select the one you have in your records).

In most use-cases, you shouldn't need to enable 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.

disablePrefixOnAttributes

  • scope: settings
  • type: string array
  • 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).

disableExactOnAttributes

  • scope: settings
  • type: string array
  • default: []

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

exactOnSingleWordQuery

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

This parameter control how the exact ranking criterion is computed when the query contains one word. There is 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

alternativesAsExact

  • 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")

Advanced

attributeForDistinct

  • scope: settings
  • type: string

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.

distinct

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

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.

rankingInfo

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

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

numericAttributesToIndex

  • scope: settings
  • type: array of strings

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.

allowCompressionOfIntegerArray

  • 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.

numericFilters (deprecated)

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

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"]).

tagFilters (deprecated)

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

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"]}.

facetFilters (deprecated)

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

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"].

analytics

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

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

placeholders

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

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" : "&lt;streetnumber&gt; Opera street, Paris" }.
  • Configure the placeholder in your index settings: "placeholders": { "<streetnumber>" : ["1", "2", "3", "4", "5", ... ], ... }.

altCorrections

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

Specify alternative corrections that you want to consider.

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

  • word: The word to correct.
  • correction: The corrected word.
  • nbTypos 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 } ].

Manage Indices

Create an index

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

  • set settings
  • add object

List indices - listIndexes

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());

Delete index - deleteIndex

You can delete an index using its name:

$client->deleteIndex('contacts');

Clear index - clearIndex

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

$index->clearIndex();

Copy index - copyIndex

You can easily copy or rename an existing index using the copy and move commands. Note: Move and copy commands overwrite the destination index.

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

Move index - moveIndex

The move command is particularly useful if you want to update a big index atomically from one version to another. For example, if you recreate your index MyIndex each night from a database by batch, you only need to:

  1. Import your database into a new index using batches. Let's call this new index MyNewIndex.
  2. Rename MyNewIndex to MyIndex using the move command. This will automatically override the old index and new queries will be served on the new one.
// Rename MyNewIndex in MyIndex (and overwrite it)
$res = $client->moveIndex('MyNewIndex', 'MyIndex');

Api Keys

The admin API key provides full control of all your indices. The admin API key should always be kept secure; do NOT use it from outside your back-end.

You can also generate user API keys to control security. These API keys can be restricted to a set of operations or/and restricted to a given index.

Generate key - generateSecuredApiKey

You may have a single index containing per user data. In that case, all records should be tagged with their associated user_id in order to add a tagFilters=user_42 filter at query time to retrieve only what a user has access to. If you're using the JavaScript client, 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. To keep using the JavaScript client (recommended for optimal latency) and target secured records, you can generate a secured API key from your backend:

// 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' => '_tags:user_42']);

This public API key can then be used in your JavaScript code as follow:

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);
});

You can mix rate limits and secured API keys by setting a userToken query parameter at API key generation time. When set, a unique user will be identified by her IP + user_token instead of only by her IP. This allows you to restrict a single user to performing a maximum of N API calls per hour, even if she shares her 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']
);

This public API key can then be used in your JavaScript code as follow:

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

var index = client.initIndex('indexName')

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

  console.log(content);
});

Advanced

Custom batch - batch

You may want to perform multiple operations with one API call to reduce latency. We expose four methods to perform batch operations:

  • addObjects: Add an array of objects using automatic objectID assignment.
  • saveObjects: Add or update an array of objects that contains an objectID attribute.
  • deleteObjects: Delete an array of objectIDs.
  • partialUpdateObjects: Partially update an array of objects that contain an objectID attribute (only specified attributes will be updated).

Example using automatic objectID assignment:

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

Example with user defined objectID (add or update):

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

Example that deletes a set of records:

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

Example that updates only the firstname attribute:

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

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']
            ],
        ]
    ]
);

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

Backup / Export an index - browse

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.

Example:

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

$next_cursor = $this->index->browseFrom('', ['numericFilters' => 'i<42'])['cursor'];

List api keys - listApiKeys

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.

Add user key - addUserKey

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 or ending with a suffix using the &#39;*&#39; character. For example, &quot;algolia.com/*&quot; matches all referers starting with &quot;algolia.com/&quot; and &quot;*.algolia.com&quot; matches all referers ending with &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";

Update user key - updateUserKey

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');

Delete user key - deleteUserKey

To delete an existing key:

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

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

Get key permissions - getUserKeyACL

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');

Multiple queries - multipleQueries

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']):

The resulting JSON answer contains a results array storing the underlying queries answers. The answers order is the same than the requests order.

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.

Get Logs - getLogs

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);

REST API

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

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Algolia Search API Client for PHP

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