diff --git a/sdks/php-client/README.md b/sdks/php-client/README.md
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+# LangGenius PHP SDK
+
+This is the PHP SDK for the LangGenius API, which allows you to easily integrate LangGenius into your PHP applications.
+
+## Requirements
+
+- PHP 7.2 or later
+- Guzzle HTTP client library
+
+## Usage
+
+After installing the SDK, you can use it in your project like this:
+
+```
+<?php
+
+require 'vendor/autoload.php';
+
+use YourVendorName\LangGeniusPHP\LangGeniusClient;
+use YourVendorName\LangGeniusPHP\CompletionClient;
+use YourVendorName\LangGeniusPHP\ChatClient;
+
+$apiKey = 'your-api-key-here';
+
+$langGeniusClient = new LangGeniusClient($apiKey);
+
+// Create a completion client
+$completionClient = new CompletionClient($apiKey);
+$response = $completionClient->create_completion_message($inputs, $query, $response_mode, $user);
+
+// Create a chat client
+$chatClient = new ChatClient($apiKey);
+$response = $chatClient->create_chat_message($inputs, $query, $user, $response_mode, $conversation_id);
+
+// Fetch application parameters
+$response = $langGeniusClient->get_application_parameters($user);
+
+// Provide feedback for a message
+$response = $langGeniusClient->message_feedback($message_id, $rating, $user);
+
+// Other available methods:
+// - get_conversation_messages()
+// - get_conversations()
+// - rename_conversation()
+```
+
+Replace 'your-api-key-here' with your actual LangGenius API key.
+
+## License
+
+This SDK is released under the MIT License.
\ No newline at end of file
diff --git a/sdks/php-client/langgenius-client.php b/sdks/php-client/langgenius-client.php
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+<?php
+
+require 'vendor/autoload.php';
+
+use GuzzleHttp\Client;
+
+class LangGeniusClient {
+    protected $api_key;
+    protected $base_url;
+    protected $client;
+
+    public function __construct($api_key) {
+        $this->api_key = $api_key;
+        $this->base_url = "https://api.langgenius.ai/v1";
+        $this->client = new Client([
+            'base_uri' => $this->base_url,
+            'headers' => [
+                'Authorization' => 'Bearer ' . $this->api_key,
+                'Content-Type' => 'application/json',
+            ],
+        ]);
+    }
+
+    protected function send_request($method, $endpoint, $data = null, $params = null, $stream = false) {
+        $options = [
+            'json' => $data,
+            'query' => $params,
+            'stream' => $stream,
+        ];
+
+        $response = $this->client->request($method, $endpoint, $options);
+        return $response;
+    }
+
+    public function message_feedback($message_id, $rating, $user) {
+        $data = [
+            'rating' => $rating,
+            'user' => $user,
+        ];
+        return $this->send_request('POST', "/messages/{$message_id}/feedbacks", $data);
+    }
+
+    public function get_application_parameters($user) {
+        $params = ['user' => $user];
+        return $this->send_request('GET', '/parameters', null, $params);
+    }
+}
+
+class CompletionClient extends LangGeniusClient {
+    public function create_completion_message($inputs, $query, $response_mode, $user) {
+        $data = [
+            'inputs' => $inputs,
+            'query' => $query,
+            'response_mode' => $response_mode,
+            'user' => $user,
+        ];
+        return $this->send_request('POST', '/completion-messages', $data, null, $response_mode === 'streaming');
+    }
+}
+
+class ChatClient extends LangGeniusClient {
+    public function create_chat_message($inputs, $query, $user, $response_mode = 'blocking', $conversation_id = null) {
+        $data = [
+            'inputs' => $inputs,
+            'query' => $query,
+            'user' => $user,
+            'response_mode' => $response_mode,
+        ];
+        if ($conversation_id) {
+            $data['conversation_id'] = $conversation_id;
+        }
+
+        return $this->send_request('POST', '/chat-messages', $data, null, $response_mode === 'streaming');
+    }
+
+    public function get_conversation_messages($user, $conversation_id = null, $first_id = null, $limit = null) {
+        $params = ['user' => $user];
+
+        if ($conversation_id) {
+            $params['conversation_id'] = $conversation_id;
+        }
+        if ($first_id) {
+            $params['first_id'] = $first_id;
+        }
+        if ($limit) {
+            $params['limit'] = $limit;
+        }
+
+        return $this->send_request('GET', '/messages', null, $params);
+    }
+
+    public function get_conversations($user, $first_id = null, $limit = null, $pinned = null) {
+        $params = [
+            'user' => $user,
+            'first_id' => $first_id,
+            'limit' => $limit,
+            'pinned'=> $pinned,
+        ];
+        return $this->send_request('GET', '/conversations', null, $params);
+    }
+
+    public function rename_conversation($conversation_id, $name, $user) {
+        $data = [
+            'name' => $name,
+            'user' => $user,
+        ];
+        return $this->send_request('PATCH', "/conversations/{$conversation_id}", $data);
+    }
+}