Professional guide: How to use PHP to connect with Midjourney and develop an immersive AI painting application

Professional guide: How to use PHP to connect to Midjourney and develop an immersive AI painting application

In today's era of increasing development of artificial intelligence technology, AI painting applications are Gradually becoming a new trend in artistic creation. Midjourney is a leading AI technology company. They provide a powerful set of APIs that allow developers to use PHP to connect their AI painting engines to develop immersive AI painting applications. This article will introduce how to use PHP to connect to Midjourney, and attach specific code examples to help developers get started quickly.

1. Preparation

1. Register a Midjourney account
   Before you start using Midjourney’s API, you need to register a Midjourney account first. Visit the Midjourney official website (https://www.midjourney.io/) and click the registration button to register.
2. Get API Key and Secret Key
   After successfully registering the account, log in to Midjourney and enter the "API" page, where you can find your API Key and Secret Key. This pair of keys will be used to connect to Midjourney's API. Make sure you save this information for subsequent use.

2. Connect to Midjourney API

1. Initiate a request
   In PHP, you can use the curl library to initiate an HTTP request. First, you need to introduce the curl library:

   <?php
    //引入curl库
    function request($url, $method = 'GET', $header = array(), $data = array(), $timeout=10) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
        if ($data) {
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        }
        if ($header) {
            curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
        }
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }
   ?>

2. Generate signature
   Calling Midjourney’s API requires adding an Authorization field to the request header. The value of this field consists of API Key and Secret Key. generate. The following is an example of PHP code to generate a signature:

   <?php
    //生成签名
    function generateSignature($api_key, $secret_key, $content = '') {
        $signature = base64_encode(hash_hmac('sha256', $content, $secret_key, true));
        return "MJ ".$api_key.":".$signature;
    }
   ?>

3. Call Midjourney’s API
   Now, you can write code to call Midjourney’s API. The following is an example of using Midjourney's AI painting API to generate a random art painting:

   <?php
    //调用Midjourney的AI绘画API
    $api_key = 'YOUR_API_KEY';
    $secret_key = 'YOUR_SECRET_KEY';
    $url = 'https://api.midjourney.io/paints';
   
    $header = array(
        'Content-Type: application/json',
        'Authorization: '.generateSignature($api_key, $secret_key)
    );
   
    $response = request($url, 'POST', $header);
   
    // 解析响应
    $result = json_decode($response, true);
   
    // 输出图片URL
    echo '<img src="' . $result['url'] . '" alt="AI绘画应用" />';
   ?>

   You need to replace the values ​​of YOUR_API_KEY and YOUR_SECRET_KEY with your own API Key and Secret Key.

The above sample code is the simplest example of using Midjourney's API to generate random art paintings. You can further extend the code according to the API documentation provided by Midjourney to implement more functions, such as specifying styles, adjusting painting parameters, etc.

3. Summary
This article introduces how to use PHP to connect to Midjourney and develop an immersive AI painting application. By calling Midjourney's API, you can achieve a variety of unique and stunning artistic creations. I hope the code examples provided in this article can help you get started quickly. If you want to know more about Midjourney's API and functions, you can check out the documentation and tutorials provided by Midjourney's official website. Good luck with your development!

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