How to Implement Natural Language Generation with ChatGPT PHP in a Custom WordPress Plugin
Posted on 16th June 2023
In this article, we’ll show you how to implement natural language generation with ChatGPT PHP in a custom WordPress plugin. We’ll cover the following topics:
What is Natural Language Generation?
Natural language generation (NLG) is the process of generating text from data. It’s commonly used to generate reports or descriptions from data sources, such as database records.
NLG is a type of artificial intelligence (AI) that uses natural language processing (NLP) to understand and interpret data. NLG algorithms then generate text that is natural-sounding and easy to read.
How to Implement NLG with ChatGPT
ChatGPT is an open-source PHP library for natural language generation. It can be used to generate text from data sources such as databases, CSV files, or JSON objects.
To use ChatGPT in a custom WordPress plugin, you first need to install the library using Composer:
composer require chatgpt/chatgpt
Once the library is installed, you can use the ChatGPTChatGPT class to generate text. The generate() method accepts a data source and a template as arguments. The data source can be a database record, a CSV file, or a JSON object. The template is a string that contains placeholders for the data.
Here’s an example of how to use the ChatGPTChatGPT class to generate text from a database record:
$record = [
'name' => 'John Doe',
'age' => '42',
'address' => '123 Main Street'
];
$template = "
<p>Name: {name}</p>
<p>Age: {age}</p>
<p>Address: {address}</p>
";
$chatgpt = new ChatGPTChatGPT();
$text = $chatgpt->generate($record, $template);
// The $text variable will contain the following string:
//
// <p>Name: John Doe</p>
// <p>Age: 42</p>
// <p>Address: 123 Main Street</p>
Wrapping Up
In this article, we’ve shown you how to implement natural language generation with ChatGPT PHP in a custom WordPress plugin. We’ve also covered the basics of NLG and how to use the ChatGPT library to generate text from data sources.
Assuming you have a functioning WordPress plugin that you want to integrate ChatGPT with, the first thing you need to do is install the PHP SDK.
If you don’t already have a Composer project set up for your plugin, you can do so by following the instructions here. Once you have Composer installed, you can add the PHP SDK as a dependency by running the following command:
composer require chatgpt/php-sdk
This will install the PHP SDK into your plugin’s vendor directory.
Once the SDK is installed, you will need to include the autoloader in your plugin code. The easiest way to do this is to add the following line to your plugin’s main PHP file:
require __DIR__ . ‘/vendor/autoload.php’;
With the SDK installed and autoloaded, you can now start using it in your plugin.
The first thing you need to do is instantiate a new ChatGPTClient object. This object will be used to interact with the ChatGPT API. You will need to pass your ChatGPT API key as the first argument to the constructor. If you don’t already have an API key, you can sign up for a free trial here.
Once you have a Client object, you can start using it to generate text. The simplest way to do this is to use the generateText() method. This method takes a single argument, which is the text that you want to generate. For example, the following code would generate text based on the input “Hello, world!”:
$client = new ChatGPTClient(‘your-api-key’);
$text = $client->generateText(“Hello, world!”);
echo $text; // prints the generated text to the screen
If you want to generate text based on a longer input, you can use the generateTextLong() method. This method is identical to generateText() except that it takes an array of strings as its input, instead of a single string. This is useful if you want to generate text based on a large amount of input text, such as a blog post or article. For example, the following code would generate text based on the input “Hello, world! This is a test.”:
$client = new ChatGPTClient(‘your-api-key’);
$text = $client->generateTextLong([“Hello, world!”, “This is a test.”]);
echo $text; // prints the generated text to the screen
If you want to fine-tune the text generation process, you can use the generateTextCustom() method. This method takes an array of options as its input, which allows you to customize the text generation process. For example, the following code would generate text with a maximum length of 100 characters:
$client = new ChatGPTClient(‘your-api-key’);
$options = [
‘max_length’ => 100,
];
$text = $client->generateTextCustom(“Hello, world!”, $options);
echo $text; // prints the generated text to the screen
The options that you can pass to the generateTextCustom() method are as follows:
max_length: The maximum number of characters that the generated text can contain.
min_length: The minimum number of characters that the generated text can contain.
temperature: A value between 0 and 1 that controls the randomness of the generated text. A value of 0 will cause the generator to always produce the most likely text, while a value of 1 will cause it to produce more random text.
top_k: The number of most likely candidates that the generator will consider when producing text.
repetition_penalty: A value that controls how much the generator penalizes repetitive text.
bow_size: The size of the bag-of-words that the generator uses. This should be set to the size of the input text.
You can also use the generateTextMulti() method to generate multiple texts at once. This method takes an array of input texts and an array of options, and returns an array of generated texts. For example, the following code would generate two texts, each with a maximum length of 100 characters:
$client = new ChatGPTClient(‘your-api-key’);
$options = [
‘max_length’ => 100,
];
$texts = $client->generateTextMulti([“Hello, world!”, “This is a test.”], $options);
foreach ($texts as $text) {
echo $text; // prints the generated text to the screen
}
The generateTextMulti() method is useful if you want to generate a large number of texts at once.
That’s all there is to using the ChatGPT PHP SDK to generate text in a WordPress plugin. With just a few lines of code, you can easily add natural language generation capabilities to your plugin.
