diff --git a/php/README.md b/php/README.md
index 5a12949..50b70e2 100644
--- a/php/README.md
+++ b/php/README.md
@@ -8,7 +8,12 @@ This quickstart demonstrates various usages of the the [Algolia PHP API Client](
 
 - An Algolia account. If you don't have one already, [create an account for free](https://www.algolia.com/users/sign_up).
 - A PHP ^7.2 local environment, or [Docker](https://www.docker.com/get-started).
+- Install [Composer](https://getcomposer.org/).
+- Install the latest version of the Algolia PHP API Client by running this command:
 
+```bash
+php composer require algolia/algoliasearch-client-php
+```
 <details>
   <summary>Using VSCode</summary>
 
@@ -20,6 +25,10 @@ This quickstart demonstrates various usages of the the [Algolia PHP API Client](
 1. Create an Algolia Application and an [Algolia Index](https://www.algolia.com/doc/guides/getting-started/quick-start/tutorials/getting-started-with-the-dashboard/#indices)
 2. Copy the file [.env.example](.env.example) and rename it to `.env` 
 3. Set the environment variables `ALGOLIA_APP_ID`, `ALGOLIA_API_KEY` and `ALGOLIA_INDEX_NAME` in the `.env` file. You can obtain those from the [Algolia Dashboard](https://www.algolia.com/api-keys/). The `ALGOLIA_API_KEY` should be the "Admin API Key" (necessary for indexing).
+4. If you'd like to use the quickstart file `rest_api_return_top_hits.php`, please include the environment variable `URL_DOMAIN` in the `.env` file. The following URLs are available.
+
+**United States:** [https://analytics.us.algolia.com](https://analytics.us.algolia.com)
+**Europe (Germany):** [https://analytics.de.algolia.com](https://analytics.de.algolia.com)
 
 ## How to use
 
@@ -40,5 +49,5 @@ php simple.php
 | [rules.php](./rules.php)  | Export rules and add a new rule to an index |
 | [backup.php](./backup.php)  | Backup an index |
 | [restore.php](./restore.php)  | Restore an index |
-| [rest_api_return_top_hits.php](./rest_api_return_top_hits.php)  | Get top 1000 searches with Analytics REST API |
+| [return_top_hits.php](./return_top_hits.php)  | Get top 1000 searches with Analytics REST API |
 | [generate_key.php](./generate_key.php)  |  Generate a rate-limited search only API key |
diff --git a/php/backup.php b/php/backup.php
index a8c189b..4571a83 100644
--- a/php/backup.php
+++ b/php/backup.php
@@ -3,6 +3,8 @@
 # Install the API client: https://www.algolia.com/doc/api-client/getting-started/install/php/?client=php
 require __DIR__.'/vendor/autoload.php';
 
+use Algolia\AlgoliaSearch\Api\SearchClient;
+
 $dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
 $dotenv->load();
 
@@ -13,18 +15,14 @@
 $ALGOLIA_INDEX_NAME = $_ENV['ALGOLIA_INDEX_NAME'];
 
 # Start the API client
-# https://www.algolia.com/doc/api-client/getting-started/initialize/php/?client=php#initialize-the-search-client
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
-
-# Create an index (or connect to it, if an index with the name `ALGOLIA_INDEX_NAME` already exists)
-# https://www.algolia.com/doc/api-client/getting-started/initialize/php/?client=php#initialize-the-search-client
-$index = $client->initIndex($ALGOLIA_INDEX_NAME);
+# https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/
+$client = SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
 
 # Get all records from an index
 # https://www.algolia.com/doc/api-reference/api-methods/browse/#get-all-records-from-an-index
 # Use an API key with `browse` ACL
 print("All the records:");
-$records = $index->browseObjects();
+$records = $client->browse($ALGOLIA_INDEX_NAME,);
 var_dump($records);
 print("\n");
 
@@ -43,7 +41,7 @@
 # Retrieve settings for an index
 # https://www.algolia.com/doc/api-reference/api-methods/get-settings/#retrieve-settings-for-an-index
 print("Index settings:\n");
-$settings = $index->getSettings();
+$settings = $client->getSettings($ALGOLIA_INDEX_NAME, 1);
 var_dump($settings);
 print("\n");
 
@@ -59,7 +57,7 @@
 # Export rules 
 # https://www.algolia.com/doc/api-reference/api-methods/export-rules/
 print("Rules:\n");
-$rules = $index->browseRules();
+$rules = $client->browseRules($ALGOLIA_INDEX_NAME);
 var_dump($rules);
 print("\n");
 
@@ -78,7 +76,7 @@
 # Export synonyms
 # https://www.algolia.com/doc/api-reference/api-methods/export-synonyms/
 print("Synonyms:\n");
-$synonyms = $index->browseSynonyms();
+$synonyms = $client->browseSynonyms($ALGOLIA_INDEX_NAME);
 var_dump($synonyms);
 print("\n");
 
diff --git a/php/change_index_settings.php b/php/change_index_settings.php
index dcbf8d0..b79d096 100644
--- a/php/change_index_settings.php
+++ b/php/change_index_settings.php
@@ -3,6 +3,8 @@
 # Install the API client: https://www.algolia.com/doc/api-client/getting-started/install/php/?client=php
 require __DIR__.'/vendor/autoload.php';
 
+use Algolia\AlgoliaSearch\Api\SearchClient;
+
 $dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
 $dotenv->load();
 
@@ -14,15 +16,12 @@
 
 # Start the API client
 # https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
-
-# Create an index (or connect to it, if an index with the name `ALGOLIA_INDEX_NAME` already exists)
-# https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/#initialize-an-index
-$index = $client->initIndex($ALGOLIA_INDEX_NAME);
+$client = SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
 
 # Set index settings
 # https://www.algolia.com/doc/api-reference/api-methods/set-settings/
-$index->setSettings(
+$res = $client->setSettings(
+    $ALGOLIA_INDEX_NAME, 
     [
       'searchableAttributes' => ['actors', 'genre'],
       'customRanking' => ['desc(rating)'],
@@ -31,12 +30,14 @@
     [
       'forwardToReplicas' => true
     ]
-  )->wait();
+    );
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
 
 # Printing settings 
 # https://www.algolia.com/doc/api-reference/api-methods/get-settings/
 print("Index settings:\n");
-$settings = $index->getSettings();
+$settings = $client->getSettings($ALGOLIA_INDEX_NAME, 1);
 var_dump($settings);
 
 ?>
diff --git a/php/composer.json b/php/composer.json
index 5f473f6..e3d3e6b 100644
--- a/php/composer.json
+++ b/php/composer.json
@@ -10,7 +10,7 @@
   "prefer-stable": true,
   "require": {
     "php": "^7.2 || ^8.0",
-    "algolia/algoliasearch-client-php": "^3.0",
+    "algolia/algoliasearch-client-php": "^4.37",
     "vlucas/phpdotenv": "^5.3"
   },
   "config": {
diff --git a/php/composer.lock b/php/composer.lock
index 6fb2f42..ccef509 100644
--- a/php/composer.lock
+++ b/php/composer.lock
@@ -4,57 +4,49 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "1b4ac595ed8267b6ea1052b56243ba5d",
+    "content-hash": "9b1ac9b166451b92a9d981d3cb87d899",
     "packages": [
         {
             "name": "algolia/algoliasearch-client-php",
-            "version": "3.1.0",
+            "version": "4.37.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/algolia/algoliasearch-client-php.git",
-                "reference": "42793a97c99a68adfe8e39eadadd970b5196f208"
+                "reference": "cffa68164fa1af8a19e40aefe73d4861e7f5a66f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/algolia/algoliasearch-client-php/zipball/42793a97c99a68adfe8e39eadadd970b5196f208",
-                "reference": "42793a97c99a68adfe8e39eadadd970b5196f208",
+                "url": "https://api.github.com/repos/algolia/algoliasearch-client-php/zipball/cffa68164fa1af8a19e40aefe73d4861e7f5a66f",
+                "reference": "cffa68164fa1af8a19e40aefe73d4861e7f5a66f",
                 "shasum": ""
             },
             "require": {
                 "ext-curl": "*",
                 "ext-json": "*",
                 "ext-mbstring": "*",
-                "php": "^7.2 || ^8.0",
-                "psr/http-message": "^1.0",
-                "psr/log": "^1.0",
-                "psr/simple-cache": "^1.0"
+                "guzzlehttp/psr7": "^2.0",
+                "php": ">=8.1 !=8.3.0",
+                "psr/http-message": "^1.1 || ^2.0",
+                "psr/log": "^1.0 || ^2.0 || ^3.0",
+                "psr/simple-cache": "^1.0 || ^2.0 || ^3.0"
             },
             "require-dev": {
-                "friendsofphp/php-cs-fixer": "^2.0",
-                "fzaninotto/faker": "^1.8",
-                "phpunit/phpunit": "^8.0 || ^9.0",
-                "symfony/yaml": "^2.0 || ^4.0"
+                "friendsofphp/php-cs-fixer": "^3.80.0",
+                "phpstan/phpstan": "^1.12",
+                "phpunit/phpunit": "^11.0",
+                "vlucas/phpdotenv": "^5.4"
             },
             "suggest": {
                 "guzzlehttp/guzzle": "If you prefer to use Guzzle HTTP client instead of the Http Client implementation provided by the package"
             },
-            "bin": [
-                "bin/algolia-doctor"
-            ],
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-2.0": "2.0.x-dev"
-                }
-            },
             "autoload": {
-                "psr-4": {
-                    "Algolia\\AlgoliaSearch\\": "src/"
-                },
                 "files": [
-                    "src/Http/Psr7/functions.php",
-                    "src/functions.php"
-                ]
+                    "lib/Http/Psr7/functions.php"
+                ],
+                "psr-4": {
+                    "Algolia\\AlgoliaSearch\\": "lib/"
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -63,10 +55,11 @@
             "authors": [
                 {
                     "name": "Algolia Team",
-                    "email": "contact@algolia.com"
+                    "homepage": "https://alg.li/support"
                 }
             ],
-            "description": "Algolia Search API Client for PHP",
+            "description": "API powering the features of Algolia.",
+            "homepage": "https://github.com/algolia/algoliasearch-client-php",
             "keywords": [
                 "algolia",
                 "api",
@@ -76,30 +69,30 @@
             ],
             "support": {
                 "issues": "https://github.com/algolia/algoliasearch-client-php/issues",
-                "source": "https://github.com/algolia/algoliasearch-client-php/tree/3.1.0"
+                "source": "https://github.com/algolia/algoliasearch-client-php/tree/4.37.0"
             },
-            "time": "2021-08-31T14:17:19+00:00"
+            "time": "2025-12-04T13:54:20+00:00"
         },
         {
             "name": "graham-campbell/result-type",
-            "version": "v1.0.2",
+            "version": "v1.1.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/GrahamCampbell/Result-Type.git",
-                "reference": "84afea85c6841deeea872f36249a206e878a5de0"
+                "reference": "3ba905c11371512af9d9bdd27d99b782216b6945"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/GrahamCampbell/Result-Type/zipball/84afea85c6841deeea872f36249a206e878a5de0",
-                "reference": "84afea85c6841deeea872f36249a206e878a5de0",
+                "url": "https://api.github.com/repos/GrahamCampbell/Result-Type/zipball/3ba905c11371512af9d9bdd27d99b782216b6945",
+                "reference": "3ba905c11371512af9d9bdd27d99b782216b6945",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0 || ^8.0",
-                "phpoption/phpoption": "^1.8"
+                "php": "^7.2.5 || ^8.0",
+                "phpoption/phpoption": "^1.9.3"
             },
             "require-dev": {
-                "phpunit/phpunit": "^6.5.14 || ^7.5.20 || ^8.5.19 || ^9.5.8"
+                "phpunit/phpunit": "^8.5.39 || ^9.6.20 || ^10.5.28"
             },
             "type": "library",
             "autoload": {
@@ -114,7 +107,8 @@
             "authors": [
                 {
                     "name": "Graham Campbell",
-                    "email": "hello@gjcampbell.co.uk"
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
                 }
             ],
             "description": "An Implementation Of The Result Type",
@@ -127,7 +121,7 @@
             ],
             "support": {
                 "issues": "https://github.com/GrahamCampbell/Result-Type/issues",
-                "source": "https://github.com/GrahamCampbell/Result-Type/tree/v1.0.2"
+                "source": "https://github.com/GrahamCampbell/Result-Type/tree/v1.1.3"
             },
             "funding": [
                 {
@@ -139,33 +133,153 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-08-28T21:34:50+00:00"
+            "time": "2024-07-20T21:45:45+00:00"
+        },
+        {
+            "name": "guzzlehttp/psr7",
+            "version": "2.8.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/guzzle/psr7.git",
+                "reference": "21dc724a0583619cd1652f673303492272778051"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/guzzle/psr7/zipball/21dc724a0583619cd1652f673303492272778051",
+                "reference": "21dc724a0583619cd1652f673303492272778051",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5 || ^8.0",
+                "psr/http-factory": "^1.0",
+                "psr/http-message": "^1.1 || ^2.0",
+                "ralouphie/getallheaders": "^3.0"
+            },
+            "provide": {
+                "psr/http-factory-implementation": "1.0",
+                "psr/http-message-implementation": "1.0"
+            },
+            "require-dev": {
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "http-interop/http-factory-tests": "0.9.0",
+                "phpunit/phpunit": "^8.5.44 || ^9.6.25"
+            },
+            "suggest": {
+                "laminas/laminas-httphandlerrunner": "Emit PSR-7 responses"
+            },
+            "type": "library",
+            "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "GuzzleHttp\\Psr7\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Graham Campbell",
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
+                },
+                {
+                    "name": "Michael Dowling",
+                    "email": "mtdowling@gmail.com",
+                    "homepage": "https://github.com/mtdowling"
+                },
+                {
+                    "name": "George Mponos",
+                    "email": "gmponos@gmail.com",
+                    "homepage": "https://github.com/gmponos"
+                },
+                {
+                    "name": "Tobias Nyholm",
+                    "email": "tobias.nyholm@gmail.com",
+                    "homepage": "https://github.com/Nyholm"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://github.com/sagikazarmark"
+                },
+                {
+                    "name": "Tobias Schultze",
+                    "email": "webmaster@tubo-world.de",
+                    "homepage": "https://github.com/Tobion"
+                },
+                {
+                    "name": "Márk Sági-Kazár",
+                    "email": "mark.sagikazar@gmail.com",
+                    "homepage": "https://sagikazarmark.hu"
+                }
+            ],
+            "description": "PSR-7 message implementation that also provides common utility methods",
+            "keywords": [
+                "http",
+                "message",
+                "psr-7",
+                "request",
+                "response",
+                "stream",
+                "uri",
+                "url"
+            ],
+            "support": {
+                "issues": "https://github.com/guzzle/psr7/issues",
+                "source": "https://github.com/guzzle/psr7/tree/2.8.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/GrahamCampbell",
+                    "type": "github"
+                },
+                {
+                    "url": "https://github.com/Nyholm",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/guzzlehttp/psr7",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2025-08-23T21:21:41+00:00"
         },
         {
             "name": "phpoption/phpoption",
-            "version": "1.8.0",
+            "version": "1.9.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/schmittjoh/php-option.git",
-                "reference": "5455cb38aed4523f99977c4a12ef19da4bfe2a28"
+                "reference": "638a154f8d4ee6a5cfa96d6a34dfbe0cffa9566d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/schmittjoh/php-option/zipball/5455cb38aed4523f99977c4a12ef19da4bfe2a28",
-                "reference": "5455cb38aed4523f99977c4a12ef19da4bfe2a28",
+                "url": "https://api.github.com/repos/schmittjoh/php-option/zipball/638a154f8d4ee6a5cfa96d6a34dfbe0cffa9566d",
+                "reference": "638a154f8d4ee6a5cfa96d6a34dfbe0cffa9566d",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0 || ^8.0"
+                "php": "^7.2.5 || ^8.0"
             },
             "require-dev": {
-                "bamarni/composer-bin-plugin": "^1.4.1",
-                "phpunit/phpunit": "^6.5.14 || ^7.0.20 || ^8.5.19 || ^9.5.8"
+                "bamarni/composer-bin-plugin": "^1.8.2",
+                "phpunit/phpunit": "^8.5.44 || ^9.6.25 || ^10.5.53 || ^11.5.34"
             },
             "type": "library",
             "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
                 "branch-alias": {
-                    "dev-master": "1.8-dev"
+                    "dev-master": "1.9-dev"
                 }
             },
             "autoload": {
@@ -180,11 +294,13 @@
             "authors": [
                 {
                     "name": "Johannes M. Schmitt",
-                    "email": "schmittjoh@gmail.com"
+                    "email": "schmittjoh@gmail.com",
+                    "homepage": "https://github.com/schmittjoh"
                 },
                 {
                     "name": "Graham Campbell",
-                    "email": "hello@gjcampbell.co.uk"
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
                 }
             ],
             "description": "Option Type for PHP",
@@ -196,7 +312,7 @@
             ],
             "support": {
                 "issues": "https://github.com/schmittjoh/php-option/issues",
-                "source": "https://github.com/schmittjoh/php-option/tree/1.8.0"
+                "source": "https://github.com/schmittjoh/php-option/tree/1.9.4"
             },
             "funding": [
                 {
@@ -208,29 +324,84 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-08-28T21:27:29+00:00"
+            "time": "2025-08-21T11:53:16+00:00"
+        },
+        {
+            "name": "psr/http-factory",
+            "version": "1.1.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/http-factory.git",
+                "reference": "2b4765fddfe3b508ac62f829e852b1501d3f6e8a"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/http-factory/zipball/2b4765fddfe3b508ac62f829e852b1501d3f6e8a",
+                "reference": "2b4765fddfe3b508ac62f829e852b1501d3f6e8a",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1",
+                "psr/http-message": "^1.0 || ^2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Http\\Message\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "PSR-17: Common interfaces for PSR-7 HTTP message factories",
+            "keywords": [
+                "factory",
+                "http",
+                "message",
+                "psr",
+                "psr-17",
+                "psr-7",
+                "request",
+                "response"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/http-factory"
+            },
+            "time": "2024-04-15T12:06:14+00:00"
         },
         {
             "name": "psr/http-message",
-            "version": "1.0.1",
+            "version": "2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/http-message.git",
-                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/http-message/zipball/f6561bf28d520154e4b0ec72be95418abe6d9363",
-                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/402d35bcb92c70c026d1a6a9883f06b2ead23d71",
+                "reference": "402d35bcb92c70c026d1a6a9883f06b2ead23d71",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": "^7.2 || ^8.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "2.0.x-dev"
                 }
             },
             "autoload": {
@@ -245,7 +416,7 @@
             "authors": [
                 {
                     "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
                 }
             ],
             "description": "Common interface for HTTP messages",
@@ -259,36 +430,36 @@
                 "response"
             ],
             "support": {
-                "source": "https://github.com/php-fig/http-message/tree/master"
+                "source": "https://github.com/php-fig/http-message/tree/2.0"
             },
-            "time": "2016-08-06T14:39:51+00:00"
+            "time": "2023-04-04T09:54:51+00:00"
         },
         {
             "name": "psr/log",
-            "version": "1.1.4",
+            "version": "3.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/log.git",
-                "reference": "d49695b909c3b7628b6289db5479a1c204601f11"
+                "reference": "f16e1d5863e37f8d8c2a01719f5b34baa2b714d3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/d49695b909c3b7628b6289db5479a1c204601f11",
-                "reference": "d49695b909c3b7628b6289db5479a1c204601f11",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/f16e1d5863e37f8d8c2a01719f5b34baa2b714d3",
+                "reference": "f16e1d5863e37f8d8c2a01719f5b34baa2b714d3",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": ">=8.0.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.1.x-dev"
+                    "dev-master": "3.x-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "Psr\\Log\\": "Psr/Log/"
+                    "Psr\\Log\\": "src"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -309,31 +480,31 @@
                 "psr-3"
             ],
             "support": {
-                "source": "https://github.com/php-fig/log/tree/1.1.4"
+                "source": "https://github.com/php-fig/log/tree/3.0.2"
             },
-            "time": "2021-05-03T11:20:27+00:00"
+            "time": "2024-09-11T13:17:53+00:00"
         },
         {
             "name": "psr/simple-cache",
-            "version": "1.0.1",
+            "version": "3.0.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/simple-cache.git",
-                "reference": "408d5eafb83c57f6365a3ca330ff23aa4a5fa39b"
+                "reference": "764e0b3939f5ca87cb904f570ef9be2d78a07865"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/simple-cache/zipball/408d5eafb83c57f6365a3ca330ff23aa4a5fa39b",
-                "reference": "408d5eafb83c57f6365a3ca330ff23aa4a5fa39b",
+                "url": "https://api.github.com/repos/php-fig/simple-cache/zipball/764e0b3939f5ca87cb904f570ef9be2d78a07865",
+                "reference": "764e0b3939f5ca87cb904f570ef9be2d78a07865",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": ">=8.0.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.0.x-dev"
+                    "dev-master": "3.0.x-dev"
                 }
             },
             "autoload": {
@@ -348,7 +519,7 @@
             "authors": [
                 {
                     "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
                 }
             ],
             "description": "Common interfaces for simple caching",
@@ -360,47 +531,91 @@
                 "simple-cache"
             ],
             "support": {
-                "source": "https://github.com/php-fig/simple-cache/tree/master"
+                "source": "https://github.com/php-fig/simple-cache/tree/3.0.0"
+            },
+            "time": "2021-10-29T13:26:27+00:00"
+        },
+        {
+            "name": "ralouphie/getallheaders",
+            "version": "3.0.3",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/ralouphie/getallheaders.git",
+                "reference": "120b605dfeb996808c31b6477290a714d356e822"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/ralouphie/getallheaders/zipball/120b605dfeb996808c31b6477290a714d356e822",
+                "reference": "120b605dfeb996808c31b6477290a714d356e822",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6"
+            },
+            "require-dev": {
+                "php-coveralls/php-coveralls": "^2.1",
+                "phpunit/phpunit": "^5 || ^6.5"
+            },
+            "type": "library",
+            "autoload": {
+                "files": [
+                    "src/getallheaders.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Ralph Khattar",
+                    "email": "ralph.khattar@gmail.com"
+                }
+            ],
+            "description": "A polyfill for getallheaders.",
+            "support": {
+                "issues": "https://github.com/ralouphie/getallheaders/issues",
+                "source": "https://github.com/ralouphie/getallheaders/tree/develop"
             },
-            "time": "2017-10-23T01:57:42+00:00"
+            "time": "2019-03-08T08:55:37+00:00"
         },
         {
             "name": "symfony/polyfill-ctype",
-            "version": "v1.23.0",
+            "version": "v1.33.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-ctype.git",
-                "reference": "46cd95797e9df938fdd2b03693b5fca5e64b01ce"
+                "reference": "a3cc8b044a6ea513310cbd48ef7333b384945638"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/46cd95797e9df938fdd2b03693b5fca5e64b01ce",
-                "reference": "46cd95797e9df938fdd2b03693b5fca5e64b01ce",
+                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/a3cc8b044a6ea513310cbd48ef7333b384945638",
+                "reference": "a3cc8b044a6ea513310cbd48ef7333b384945638",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.1"
+                "php": ">=7.2"
+            },
+            "provide": {
+                "ext-ctype": "*"
             },
             "suggest": {
                 "ext-ctype": "For best performance"
             },
             "type": "library",
             "extra": {
-                "branch-alias": {
-                    "dev-main": "1.23-dev"
-                },
                 "thanks": {
-                    "name": "symfony/polyfill",
-                    "url": "https://github.com/symfony/polyfill"
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Ctype\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Ctype\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -425,7 +640,7 @@
                 "portable"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.23.0"
+                "source": "https://github.com/symfony/polyfill-ctype/tree/v1.33.0"
             },
             "funding": [
                 {
@@ -436,50 +651,55 @@
                     "url": "https://github.com/fabpot",
                     "type": "github"
                 },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
                 {
                     "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-02-19T12:13:01+00:00"
+            "time": "2024-09-09T11:45:10+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
-            "version": "v1.23.1",
+            "version": "v1.33.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-mbstring.git",
-                "reference": "9174a3d80210dca8daa7f31fec659150bbeabfc6"
+                "reference": "6d857f4d76bd4b343eac26d6b539585d2bc56493"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/9174a3d80210dca8daa7f31fec659150bbeabfc6",
-                "reference": "9174a3d80210dca8daa7f31fec659150bbeabfc6",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/6d857f4d76bd4b343eac26d6b539585d2bc56493",
+                "reference": "6d857f4d76bd4b343eac26d6b539585d2bc56493",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.1"
+                "ext-iconv": "*",
+                "php": ">=7.2"
+            },
+            "provide": {
+                "ext-mbstring": "*"
             },
             "suggest": {
                 "ext-mbstring": "For best performance"
             },
             "type": "library",
             "extra": {
-                "branch-alias": {
-                    "dev-main": "1.23-dev"
-                },
                 "thanks": {
-                    "name": "symfony/polyfill",
-                    "url": "https://github.com/symfony/polyfill"
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Mbstring\\": ""
-                },
                 "files": [
                     "bootstrap.php"
-                ]
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                }
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -505,7 +725,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.23.1"
+                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.33.0"
             },
             "funding": [
                 {
@@ -516,47 +736,48 @@
                     "url": "https://github.com/fabpot",
                     "type": "github"
                 },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
                 {
                     "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-05-27T12:26:48+00:00"
+            "time": "2024-12-23T08:48:59+00:00"
         },
         {
             "name": "symfony/polyfill-php80",
-            "version": "v1.23.1",
+            "version": "v1.33.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/polyfill-php80.git",
-                "reference": "1100343ed1a92e3a38f9ae122fc0eb21602547be"
+                "reference": "0cc9dd0f17f61d8131e7df6b84bd344899fe2608"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-php80/zipball/1100343ed1a92e3a38f9ae122fc0eb21602547be",
-                "reference": "1100343ed1a92e3a38f9ae122fc0eb21602547be",
+                "url": "https://api.github.com/repos/symfony/polyfill-php80/zipball/0cc9dd0f17f61d8131e7df6b84bd344899fe2608",
+                "reference": "0cc9dd0f17f61d8131e7df6b84bd344899fe2608",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.1"
+                "php": ">=7.2"
             },
             "type": "library",
             "extra": {
-                "branch-alias": {
-                    "dev-main": "1.23-dev"
-                },
                 "thanks": {
-                    "name": "symfony/polyfill",
-                    "url": "https://github.com/symfony/polyfill"
+                    "url": "https://github.com/symfony/polyfill",
+                    "name": "symfony/polyfill"
                 }
             },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Php80\\": ""
-                },
                 "files": [
                     "bootstrap.php"
                 ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php80\\": ""
+                },
                 "classmap": [
                     "Resources/stubs"
                 ]
@@ -588,7 +809,7 @@
                 "shim"
             ],
             "support": {
-                "source": "https://github.com/symfony/polyfill-php80/tree/v1.23.1"
+                "source": "https://github.com/symfony/polyfill-php80/tree/v1.33.0"
             },
             "funding": [
                 {
@@ -599,48 +820,56 @@
                     "url": "https://github.com/fabpot",
                     "type": "github"
                 },
+                {
+                    "url": "https://github.com/nicolas-grekas",
+                    "type": "github"
+                },
                 {
                     "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-07-28T13:41:28+00:00"
+            "time": "2025-01-02T08:10:11+00:00"
         },
         {
             "name": "vlucas/phpdotenv",
-            "version": "v5.3.0",
+            "version": "v5.6.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vlucas/phpdotenv.git",
-                "reference": "b3eac5c7ac896e52deab4a99068e3f4ab12d9e56"
+                "reference": "24ac4c74f91ee2c193fa1aaa5c249cb0822809af"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vlucas/phpdotenv/zipball/b3eac5c7ac896e52deab4a99068e3f4ab12d9e56",
-                "reference": "b3eac5c7ac896e52deab4a99068e3f4ab12d9e56",
+                "url": "https://api.github.com/repos/vlucas/phpdotenv/zipball/24ac4c74f91ee2c193fa1aaa5c249cb0822809af",
+                "reference": "24ac4c74f91ee2c193fa1aaa5c249cb0822809af",
                 "shasum": ""
             },
             "require": {
                 "ext-pcre": "*",
-                "graham-campbell/result-type": "^1.0.1",
-                "php": "^7.1.3 || ^8.0",
-                "phpoption/phpoption": "^1.7.4",
-                "symfony/polyfill-ctype": "^1.17",
-                "symfony/polyfill-mbstring": "^1.17",
-                "symfony/polyfill-php80": "^1.17"
+                "graham-campbell/result-type": "^1.1.3",
+                "php": "^7.2.5 || ^8.0",
+                "phpoption/phpoption": "^1.9.3",
+                "symfony/polyfill-ctype": "^1.24",
+                "symfony/polyfill-mbstring": "^1.24",
+                "symfony/polyfill-php80": "^1.24"
             },
             "require-dev": {
-                "bamarni/composer-bin-plugin": "^1.4.1",
+                "bamarni/composer-bin-plugin": "^1.8.2",
                 "ext-filter": "*",
-                "phpunit/phpunit": "^7.5.20 || ^8.5.14 || ^9.5.1"
+                "phpunit/phpunit": "^8.5.34 || ^9.6.13 || ^10.4.2"
             },
             "suggest": {
                 "ext-filter": "Required to use the boolean validator."
             },
             "type": "library",
             "extra": {
+                "bamarni-bin": {
+                    "bin-links": true,
+                    "forward-command": false
+                },
                 "branch-alias": {
-                    "dev-master": "5.3-dev"
+                    "dev-master": "5.6-dev"
                 }
             },
             "autoload": {
@@ -655,13 +884,13 @@
             "authors": [
                 {
                     "name": "Graham Campbell",
-                    "email": "graham@alt-three.com",
-                    "homepage": "https://gjcampbell.co.uk/"
+                    "email": "hello@gjcampbell.co.uk",
+                    "homepage": "https://github.com/GrahamCampbell"
                 },
                 {
                     "name": "Vance Lucas",
                     "email": "vance@vancelucas.com",
-                    "homepage": "https://vancelucas.com/"
+                    "homepage": "https://github.com/vlucas"
                 }
             ],
             "description": "Loads environment variables from `.env` to `getenv()`, `$_ENV` and `$_SERVER` automagically.",
@@ -672,7 +901,7 @@
             ],
             "support": {
                 "issues": "https://github.com/vlucas/phpdotenv/issues",
-                "source": "https://github.com/vlucas/phpdotenv/tree/v5.3.0"
+                "source": "https://github.com/vlucas/phpdotenv/tree/v5.6.2"
             },
             "funding": [
                 {
@@ -684,18 +913,18 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-01-20T15:23:13+00:00"
+            "time": "2025-04-30T23:37:27+00:00"
         }
     ],
     "packages-dev": [],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {},
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
         "php": "^7.2 || ^8.0"
     },
-    "platform-dev": [],
-    "plugin-api-version": "2.1.0"
+    "platform-dev": {},
+    "plugin-api-version": "2.9.0"
 }
diff --git a/php/generate_key.php b/php/generate_key.php
index 153bcca..6d11f61 100644
--- a/php/generate_key.php
+++ b/php/generate_key.php
@@ -5,37 +5,44 @@
 #The generated key will be valid for Search operations, and will be limited to 100 queries per hour.
 
 # Install the API client: https://www.algolia.com/doc/api-client/getting-started/install/php/?client=php
-require __DIR__ . '/vendor/autoload.php';
+require __DIR__.'/vendor/autoload.php';
+
+use Algolia\AlgoliaSearch\Api\SearchClient;
 
 $dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
 $dotenv->load();
 
-# Get your Algolia Application ID and (admin) API key from the dashboard: https://www.algolia.com/account/api-keys
-# and choose a name for your index. Add these environment variables to a `.env` file:
+# Algolia client credentials
 $ALGOLIA_APP_ID = $_ENV['ALGOLIA_APP_ID'];
 $ALGOLIA_API_KEY = $_ENV['ALGOLIA_API_KEY'];
 $ALGOLIA_INDEX_NAME = $_ENV['ALGOLIA_INDEX_NAME'];
 
-# Start the API client
+# Initialize the client
 # https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
+$client = SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
 
 # Set permissions for API key
 # https://www.algolia.com/doc/api-reference/api-methods/add-api-key/#method-param-acl
-$acl = ["search"];
 
-// Set the parameters for API key
-// https://www.algolia.com/doc/api-reference/api-methods/add-api-key/#method-param-maxqueriesperipperhour
+//Set the parameters for API key
+//https://www.algolia.com/doc/rest-api/search/add-api-key
 
-$params = [
-    'description'            => 'Restricted search-only API key for algolia.com',
-    // Rate-limit to 100 requests per hour per IP address
-    'maxQueriesPerIPPerHour' => 100
-];
+$acl = [
+    'acl' => [
+        'search',
+
+        'addObject',
+    ],
+        'description' => 'Restricted search-only API key for algolia.com',
+        'maxQueriesPerIPPerHour' => 100
+    ];
 
 # Create a new restricted search-only API key
 print("Creating new key...\n");
-$res = $client->addApiKey($acl, $params)->wait();
+
+$res = $client->addApiKey($acl);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['key']);
 
 $new_key = $res['key'];
 
@@ -45,18 +52,30 @@
     echo "Error while creating key\n";
 }
 
+//Wait for the API key to be created
+$res = $client->waitForApiKey(
+    $new_key,
+    'add',
+);
+
 # Test the created key
 print("Testing key...\n");
 
 # Initialise a new client with the generated key
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $new_key);
-
-# Create an index (or connect to it, if an index with the name `ALGOLIA_INDEX_NAME` already exists)
-# https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/#initialize-an-index
-$index = $client->initIndex($ALGOLIA_INDEX_NAME);
+$newClient = SearchClient::create($ALGOLIA_APP_ID, $new_key);
 
 # Test the new generated key by performing a search
-if ($search_res = $index->search('')) {
+
+$searchQuery =  [
+    'requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+];
+
+if ($search_res = $newClient->search($searchQuery)) {
     echo "Successful key test\n";
 } else {
     echo "Failed search with the new key\n";
diff --git a/php/indexing.php b/php/indexing.php
index c1c911d..3a2fde3 100644
--- a/php/indexing.php
+++ b/php/indexing.php
@@ -2,6 +2,8 @@
 
 require __DIR__.'/vendor/autoload.php';
 
+use Algolia\AlgoliaSearch\Api\SearchClient;
+
 $dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
 $dotenv->load();
 
@@ -12,11 +14,7 @@
 
 # Initialize the client
 # https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
-
-# Initialize an index
-# https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/#initialize-an-index
-$index = $client->initIndex($ALGOLIA_INDEX_NAME);
+$client = SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
 
 # Define some objects to add to our index
 # https://www.algolia.com/doc/api-client/methods/indexing/#object-and-record
@@ -32,20 +30,40 @@
     ];
 
 # We don't have any objects (yet) in our index
-$res = $index->search('');
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
+
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 # Save Objects: Add mutliple new objects to an index.
 # https://www.algolia.com/doc/api-reference/api-methods/add-objects/?client=php
 print('Save Objects - Adding multiple objects: ');
 print_r($contacts);
-$index->saveObjects($contacts)->wait();
+$res = $client->saveObjects($ALGOLIA_INDEX_NAME, $contacts);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
+
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
 
-$res = $index->search('');
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 # Save Objects: Replace an existing object with an updated set of attributes.
@@ -56,11 +74,22 @@
     'name' => 'FooBar',
     'objectID' => '1'
 ];
-$index->saveObject($new_contact)->wait();
+$res = $client->saveObject($ALGOLIA_INDEX_NAME, $new_contact);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
+
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
 
-$res = $index->search('');
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 # Partial Update Objects: Update one or more attributes of an existing object.
@@ -68,25 +97,46 @@
 print('Save Objects - Updating object’s attributes on: ');
 print_r($contacts[0]);
 $new_contact = [
-    'email' => 'foo@bar.com', # New attribute
-    'objectID' => '1'
+    'email' => 'foo@bar.com' # New attribute
 ];
-$index->partialUpdateObject($new_contact)->wait();
+$res = $client->partialUpdateObject($ALGOLIA_INDEX_NAME, '1', $new_contact);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
+
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
 
-$res = $index->search('');
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 # Delete Objects: Remove objects from an index using their objectID.
 # https://www.algolia.com/doc/api-reference/api-methods/delete-objects/?client=php
 $objectID_to_delete = $contacts[0]["objectID"];
 printf('Delete Objects - Deleting object with objectID "%s"', $objectID_to_delete);
-$index->deleteObject($objectID_to_delete)->wait();
+$res = $client->deleteObject($ALGOLIA_INDEX_NAME, $objectID_to_delete);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
+
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
 
-$res = $index->search('');
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 # Replace All Objects: Clears all objects from your index and replaces them with a new set of objects.
@@ -103,11 +153,22 @@
 ];
 print('Replace All Objects - Clears all objects and replaces them with: ');
 print_r($new_contacts);
-$index->replaceAllObjects($new_contacts)->wait();
+$res = $client->replaceAllObjects($ALGOLIA_INDEX_NAME, $new_contacts);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
+
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
 
-$res = $index->search('');
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 # Delete By: Remove all objects matching a filter (including geo filters).
@@ -116,17 +177,32 @@
 
 # Firstly, have an attribute to filter on
 # https://www.algolia.com/doc/api-client/methods/settings/?client=php
-$index->setSettings([
+$res = $client->setSettings($ALGOLIA_INDEX_NAME, 
+[
     'attributesForFaceting' => ['name']
-])->wait();
+]);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
 
-$index->deleteBy([
+$res = $client->deleteBy($ALGOLIA_INDEX_NAME,
+[
     'facetFilters' => ['name:NewBar'] # https://www.algolia.com/doc/api-reference/api-parameters/facetFilters/
-])->wait();
+]);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
+
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
 
-$res = $index->search('');
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 # Get Objects: Get one or more objects using their objectIDs.
@@ -134,46 +210,61 @@
 $object_id = $new_contacts[0]['objectID'];
 printf('Get Objects - Getting object with objectID "%s"', $object_id);
 
-$res = $index->getObject($object_id);
+$res = $client->getObject($ALGOLIA_INDEX_NAME, $object_id);
 print('Results: ');
 print_r($res);
 print("\n");
 
 # Custom Batch: Perform several indexing operations in one API call.
 # https://www.algolia.com/doc/api-reference/api-methods/batch/?client=php
-$operations = [
-    [
-        'action' => 'addObject',
-        'indexName' => $ALGOLIA_INDEX_NAME,
-        'body' => [
-            'name' => 'BatchedBar',
-        ]
-    ],
-    [
-        'action' => 'updateObject',
-        'indexName' => $ALGOLIA_INDEX_NAME,
-        'body' => [
-            'objectID' => $object_id,
-            'name' => 'NewBatchedBar',
-        ]
-    ]
-];
 print('Custom Batch - Batching the operations: ');
-print_r( $operations);
-$res = $client->multipleBatch($operations)->wait();
 
-$res = $index->search('');
+$res = $client->multipleBatch(
+    ['requests' => [
+        ['action' => 'addObject',
+            'body' => [
+                'name' => 'BatchedBar',
+            ],
+            'indexName' => $ALGOLIA_INDEX_NAME,
+        ],
+    ],
+    ],
+);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID'][$ALGOLIA_INDEX_NAME]);
+
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
+
 print('Current objects: ');
-print_r($res['hits']);
+print_r($res['results'][0]['hits']);
 print("\n");
 
 
 # Clear Objects: Clear the records of an index without affecting its settings.
 # https://www.algolia.com/doc/api-reference/api-methods/clear-objects/?client=php
 print_r("Clear Objects: Clear the records of an index without affecting its settings.\n");
-$index->clearObjects()->wait();
+$res = $client->clearObjects($ALGOLIA_INDEX_NAME);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
 
 # We don't have any objects in our index
-$res = $index->search('');
+$res = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => '',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
+
 print('Current objects: ');
-print_r($res['hits']);
\ No newline at end of file
+print_r($res['results'][0]['hits']);
\ No newline at end of file
diff --git a/php/rest_api_return_top_hits.php b/php/rest_api_return_top_hits.php
deleted file mode 100644
index 820a607..0000000
--- a/php/rest_api_return_top_hits.php
+++ /dev/null
@@ -1,59 +0,0 @@
-<?php
-
-# This script makes a GET request to the /searches endpoint on the Analytics REST API - https://www.algolia.com/doc/rest-api/analytics/. 
-# To get the top 1000 searches over the last 7 days.
-# There is no API client for Analytics, so this script uses the PHP Requests library to make the call.
-
-require __DIR__ . '/vendor/autoload.php';
-
-$dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
-$dotenv->load();
-
-# Get your Algolia Application ID and (admin) API key from the dashboard: https://www.algolia.com/account/api-keys
-# and choose a name for your index. Add these environment variables to a `.env` file:
-$ALGOLIA_APP_ID = $_ENV['ALGOLIA_APP_ID'];
-$ALGOLIA_API_KEY = $_ENV['ALGOLIA_API_KEY'];
-$ALGOLIA_INDEX_NAME = $_ENV['ALGOLIA_INDEX_NAME'];
-
-# The Analytics API can be reached from multiple domains, each specific to a region. 
-# You should use the domain that matches the region where your analytics data is stored and processed. 
-# View your analytics region: https://www.algolia.com/infra/analytics
-# The following domains are available:
-# United States: https://analytics.us.algolia.com
-# Europe (Germany): https://analytics.de.algolia.com
-
-$URL_DOMAIN = $_ENV['URL_DOMAIN'];
-
-$url = "$URL_DOMAIN/2/searches?index=$ALGOLIA_INDEX_NAME&limit=1000";
-
-# Describing HTTP request
-$request_options  = [
-    'http' => [
-        'method'  => 'GET',
-        'header'  => join("\r\n", [
-            "X-Algolia-Application-Id: $ALGOLIA_APP_ID",
-            "X-Algolia-API-Key: $ALGOLIA_API_KEY",
-        ]),
-    ]
-];
-
-# Sending HTTP request
-$result = file_get_contents($url, false, stream_context_create($request_options));
-
-if ($result === FALSE) {
-    exit("Failed HTTP request");
-}
-
-# Returning 1000 Top Searches
-print("1000 Top Searches:\n");
-var_dump($result);
-
-# Format the resulting json string
-$json = json_decode($result);
-$formatted_result = json_encode($json, JSON_PRETTY_PRINT);
-
-# Write json to file
-if (file_put_contents("{$ALGOLIA_INDEX_NAME}_top_1000_searches.json", $formatted_result))
-    echo "JSON file created successfully...\n";
-else
-    echo "Oops! Error creating json file...\n";
diff --git a/php/restore.php b/php/restore.php
index 237804d..04618ac 100644
--- a/php/restore.php
+++ b/php/restore.php
@@ -3,6 +3,8 @@
 # Install the API client: https://www.algolia.com/doc/api-client/getting-started/install/php/?client=php
 require __DIR__.'/vendor/autoload.php';
 
+use Algolia\AlgoliaSearch\Api\SearchClient;
+
 $dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
 $dotenv->load();
 
@@ -13,12 +15,8 @@
 $ALGOLIA_INDEX_NAME = $_ENV['ALGOLIA_INDEX_NAME'];
 
 # Start the API client
-# https://www.algolia.com/doc/api-client/getting-started/initialize/php/?client=php#initialize-the-search-client
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
-
-# Create an index (or connect to it, if an index with the name `ALGOLIA_INDEX_NAME` already exists)
-# https://www.algolia.com/doc/api-client/getting-started/initialize/php/?client=php#initialize-the-search-client
-$index = $client->initIndex($ALGOLIA_INDEX_NAME);
+# https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/
+$client = SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
 
 # Restoring all records with replace all objects method
 # https://www.algolia.com/doc/api-reference/api-methods/replace-all-objects/
@@ -29,11 +27,8 @@
 var_dump($jsonRecords);
 print("\n");
 
-# Decode json file
-$arrayRecords = json_decode($jsonRecords, true);
-
 # Restore Records
-$index->replaceAllObjects($arrayRecords);
+$client->replaceAllObjects($ALGOLIA_INDEX_NAME, $jsonRecords);
 print("Records restored\n");
 
 # Restoring settings with set settings method
@@ -49,7 +44,7 @@
 $settings = json_decode($jsonSettings, true);
 
 # Restore settings
-$index->setSettings($settings);
+$client->setSettings($ALGOLIA_INDEX_NAME, $settings);
 print("Settings restored\n");
 
 # Restoring Rules with replace all rules method
@@ -58,14 +53,14 @@
 # Read json file
 $jsonRules = file_get_contents("{$ALGOLIA_INDEX_NAME}_rules.json");
 print("Rules:\n");
-var_dump($jsonRules);
+print_r($jsonRules);
 print("\n");
 
 # Decode json file
 $arrayRules = json_decode($jsonRules, true);
 
 # Restore Rules
-$index->replaceAllRules($arrayRules);
+$client->saveRules($ALGOLIA_INDEX_NAME, $arrayRules);
 print("Rules restored\n");
 
 
@@ -82,5 +77,5 @@
 $arraySynonyms = json_decode($jsonSynonyms, true);
 
 # Restore Synonyms
-$index->replaceAllSynonyms($arraySynonyms);
+$client->saveSynonyms($ALGOLIA_INDEX_NAME, $arraySynonyms);
 print("Synonyms restored\n");
\ No newline at end of file
diff --git a/php/return_top_hits.php b/php/return_top_hits.php
new file mode 100644
index 0000000..03814e7
--- /dev/null
+++ b/php/return_top_hits.php
@@ -0,0 +1,38 @@
+<?php
+
+# This script makes a GET request to the /searches endpoint on the Analytics REST API - https://www.algolia.com/doc/rest-api/analytics/. 
+# To get the top 1000 searches over the last 7 days.
+
+require __DIR__.'/vendor/autoload.php';
+
+use Algolia\AlgoliaSearch\Api\AnalyticsClient;
+
+$dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
+$dotenv->load();
+
+# Algolia client credentials
+$ALGOLIA_APP_ID = $_ENV['ALGOLIA_APP_ID'];
+$ALGOLIA_API_KEY = $_ENV['ALGOLIA_API_KEY'];
+$ALGOLIA_INDEX_NAME = $_ENV['ALGOLIA_INDEX_NAME'];
+
+# Get application region
+# https://www.algolia.com/doc/libraries/sdk/methods/analytics#php
+
+$ALGOLIA_APPLICATION_REGION = "us";
+
+$client = AnalyticsClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY, $ALGOLIA_APPLICATION_REGION);
+
+$response = $client->getTopSearches($ALGOLIA_INDEX_NAME);
+
+# Returning 1000 Top Searches
+print("1000 Top Searches:\n");
+var_dump($response);
+
+# Format the resulting json string
+$formatted_result = json_encode($response, JSON_PRETTY_PRINT);
+
+# Write json to file
+if (file_put_contents("{$ALGOLIA_INDEX_NAME}_top_1000_searches.json", $formatted_result))
+    echo "JSON file created successfully...\n";
+else
+    echo "Oops! Error creating json file...\n";
diff --git a/php/rules.php b/php/rules.php
index 552488f..cc41ad1 100644
--- a/php/rules.php
+++ b/php/rules.php
@@ -3,6 +3,8 @@
 # Install the API client: https://www.algolia.com/doc/api-client/getting-started/install/php/?client=php
 require __DIR__.'/vendor/autoload.php';
 
+use Algolia\AlgoliaSearch\Api\SearchClient;
+
 $dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
 $dotenv->load();
 
@@ -14,16 +16,12 @@
 
 # Start the API client
 # https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
-
-# Create an index (or connect to it, if an index with the name `ALGOLIA_INDEX_NAME` already exists)
-# https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/#initialize-an-index
-$index = $client->initIndex($ALGOLIA_INDEX_NAME);
+$client = SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
 
 # Exporting the rules 
 # https://www.algolia.com/doc/api-reference/api-methods/export-rules/#examples
 print("Original rules:\n");
-$iterator = $index->browseRules();
+$iterator = $client->browseRules($ALGOLIA_INDEX_NAME);
 foreach ($iterator as $rule) {
   var_dump($rule);
 }
@@ -46,15 +44,22 @@
         ))
     )
 );
-$index->saveRule($rule)->wait();
+$res = $client->saveRule($ALGOLIA_INDEX_NAME, $object_id, $rule);
+
+$client->waitForTask($ALGOLIA_INDEX_NAME, $res['taskID']);
 
 # Exporting the modified rules 
 # https://www.algolia.com/doc/api-reference/api-methods/export-rules/#examples
 print("Modified rules:\n");
-$iterator = $index->browseRules();
-foreach ($iterator as $rule) {
-  var_dump($rule);
-}
+$query = [
+      'query' => 'flower',
+];
+
+$res = $client->searchRules(
+    $ALGOLIA_INDEX_NAME,
+    $query,
+);
+print_r($res);
 print("\n");
 
 ?>
diff --git a/php/simple.php b/php/simple.php
index 34f1de0..56d8860 100644
--- a/php/simple.php
+++ b/php/simple.php
@@ -1,7 +1,9 @@
 <?php
 
 # Install the API client: https://www.algolia.com/doc/api-client/getting-started/install/php/?client=php
-require __DIR__.'/vendor/autoload.php';
+require_once realpath(__DIR__ . "/vendor/autoload.php");
+
+use Algolia\AlgoliaSearch\Api\SearchClient;
 
 $dotenv = Dotenv\Dotenv::createImmutable(__DIR__);
 $dotenv->load();
@@ -14,22 +16,34 @@
 
 # Start the API client
 # https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/
-$client = \Algolia\AlgoliaSearch\SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
-
-# Create an index (or connect to it, if an index with the name `ALGOLIA_INDEX_NAME` already exists)
-# https://www.algolia.com/doc/api-client/getting-started/instantiate-client-index/#initialize-an-index
-$index = $client->initIndex($ALGOLIA_INDEX_NAME);
+$client = SearchClient::create($ALGOLIA_APP_ID, $ALGOLIA_API_KEY);
 
 # Add new objects to the index
 # https://www.algolia.com/doc/api-reference/api-methods/add-objects/
-$newObject = ['objectID' => 1, 'name' => 'Foo'];
-$res = $index->saveObjects([$newObject]);
-
-# Wait for the indexing task to complete
-# https://www.algolia.com/doc/api-reference/api-methods/wait-task/
-$res->wait();
-
-# Search the index for "Fo"
-# https://www.algolia.com/doc/api-reference/api-methods/search/
-$objects = $index->search('Fo');
-print_r($objects);
+// Add a new record to your Algolia index
+// Edit the JSON object based on your record schema
+$response = $client->saveObject(
+    $ALGOLIA_INDEX_NAME,
+    ['objectID' => '1',
+        'name' => 'foo',
+    ],
+);
+
+var_dump($response);
+
+// Poll the task status to know when it has been indexed
+$client->waitForTask($ALGOLIA_INDEX_NAME, $response['taskID']);
+
+// Fetch search results, with typo tolerance
+$response = $client->search(
+    ['requests' => [
+        ['indexName' => $ALGOLIA_INDEX_NAME,
+            'query' => 'foo',
+            'hitsPerPage' => 50,
+        ],
+    ],
+    ],
+);
+
+// play with the response
+var_dump($response);