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OpenAI Chat API PHP Completions Class: Chat application like ChatGPT using OpenAI GPT API

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phpopenaichat 1.0.1BSD License5PHP 5, Web services, Chat, Artificial..., A...
Description 

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This package implements a chat application like ChatGPT using OpenAI GPT API.

It provides a class that can access the OpenAI GPT API to send requests to implement chat interactions.

The package also provides a Web application to let users chat with the ChatGPT artificial intelligence engine, similar to what is possible with the ChatGPT application.

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ChatGPT became a very famous artificial intelligence application due to its ability to provide a chat application that allows the users to interact with a robot in a way that feels like the ChatGPT users are talking with other humans.

This package provides a PHP application that works similarly to ChatGPT.

It uses the GPT API to benefit from the same artificial intelligence engine of OpenAI that ChatGPT uses.

Manuel Lemos
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Instructions

1. Create an OpenAI account at https://beta.openai.com/

2. Create an API key at https://beta.openai.com/account/api-keys

3. Make a variable to store your API key in, let's say, $apiKey

4. Create a new PHPOpenAIChat object, passing in your API key, like this:
    $openAIChat = new PHPOpenAIChat($apiKey);

5. Send a message to the model and get a response like this:
    $messages = []; # create a conversation
    // set agent
    $messages = $openAIChat->set_agent($messages, "You are an assistant cat that can speak English and is named Henry.");
    //Add prompt to messages conversation
    $messages = $openAIChat->add_prompt_to_messages($messages, "What is your name?");
    $response = $openAIChat->sendMessage($messages);
    print_r($response); # show entire returned array
    // print text
    echo "<br />response text: " . $openAIChat->get_response_text($response) ."<br />";

6. You can also set the model to use (gpt-3.5-turbo or gpt-4), the max_tokens to use, the temperature to use, the frequency_penalty to use, and the presence_penalty to use.

7. You can also estimate the token count of the messages to send to the model and subtract it from max_tokens.

8. You should be able to get the text from the response by using $response['choices'][0]['message']['content']

9. You can append the text from the response to the messages to send to the model

10. You can also use the add_prompt_to_messages() function to add a prompt to the current conversation

11. Then, you can repeat the cycle by sending the messages to the model and getting another response.

Example

<?php

$apiKey
= "your-openai-api-key-here"; # set your openai key here

// version: 1.0
// filename: example.phpopenaichat.php
// author: https://www.phpclasses.org/browse/author/144301.html
// description: An application to hold conversations using the OpenAI API to access the GPT-3.5-Turbo model and the GPT-4 model.
// license: BSD License

// TODO: DONE. Conversation loading/saving
// TODO: DONE. Edit previous message sections by clicking their div in the window to change their content
// TODO: When contracting messages array to fit into maxtokens, start throwing away everything after first agent and first prompt.

// TODO: A oneshot section for a single message that is not part of the conversation.
// TODO: DONE. save/load agent
/*
    Description:
        An application to hold conversations using the OpenAI API to access the GPT-3.5-Turbo model and the GPT-4 model.
        Very versatile and lets you edit the conversation's past to change the future responses.
        Let's you save/load/delete conversations and agents using JSON flatfiles.
       
        Programmed using PHP 8. Uses jQuery CDN for jQuery. PHP Curl required to connect to API with class.phpopenaichat.php.

        I found ChatGPT to be lacking, so I made my own.
        Messages in conversation only show an excerpt. Click on them to see the full message.
*/

/*
    Features:
        - uses class class.phpopenaichat.php to drive the application's API request.
        - Persistent conversation using $_SESSION
        - Persistent controls that dynamically update on the server side whenever they are changed client side
        - Using jQuery to dynamically update the page without reloading it
        - Ability to save/load/delete conversations in a JSON file in the _saved directory (create in this program's root, and set as read/writeable
        - Ability to edit previous conversation messages by clicking on them in the window (Both agent and user messages can be edited)
        - Ability to save/load/delete agent into a JSON file in the _saved_agents directory (create in this program's root, and set as read/writeable
        - Minimal CSS styling for better code clarity
        - Ability to change the model, temperature, frequency penalty, presence penalty, and max tokens, previous conversation, and agent between prompts

        - frequency penalty, presence penalty let the AI know to not repeat itself or to not repeat the user's input
        - temperature is how random the AI's response is. 0.0 is the most predictable, 1.0+ is the most random
        - agents help the model align to a specific style of conversation. (ie. a doctor, a lawyer, a child, a teenager, a parent, etc.)

        - multiuser - Can run multiple instances at same time, but just use different browsers or a private window so that each instance has its own session.
        - GPT 4 is in beta at the moment, so you have to request access.
        - API access costs money, so be aware of that. (gpt 3.5 turbo is dirt cheap at the moment)
        - This is not secured for production use. It is just a proof of concept, and made for closed/private access from trusted individuals.

        - Using a command processor on the return from the server let's the server dynamically redefine the controls on the client side.
        - server has a copy of the clients data, so client's side is more of an indicator than a director.
        - API can take a few seconds to return a response, so be patient when it seems nothing is working after sending a prompt.


        devnotes: june 2023
        - added to example:
        - added support for gpt-3.5-turbo-16k (16k token model of gpt-3.5-turbo)
        - added support for gpt-4-32k (32k token model of gpt-4)

*/

    // start our session for persistent parts of the application
   
ob_start(); session_start();

   
// destroy session
    // session_destroy(); exit;

    // setting some defaults for the application
   
if(!isset($_SESSION['messages']))
       
$_SESSION['messages'] = []; // current conversation

   
if(!isset($_SESSION['agent']))
       
$_SESSION['agent'] = "You are a friendly and helpful assistant.";
   
    if(!isset(
$_SESSION['model']))
       
$_SESSION['model'] = "gpt-3.5-turbo"; // default model

   
if(!isset($_SESSION['temperature']))
       
$_SESSION['temperature'] = 1.0; // default temperature

   
if(!isset($_SESSION['freq_penalty']))
       
$_SESSION['freq_penalty'] = 0.0; // default frequency penalty

   
if(!isset($_SESSION['pres_penalty']))
       
$_SESSION['pres_penalty'] = 0.0; // default presence penalty

   
if(!isset($_SESSION['max_tokens']))
       
$_SESSION['max_tokens'] = 4090; // default max tokens

    # ---

   
require_once('class.phpopenaichat.php');
   
// create new instance of PHPOpenAIChat
   
$openAIChat = new PHPOpenAIChat($apiKey);

   
// unused?... for now
   
function send_and_append($prompt, $messages)
    {
        global
$openAIChat;

       
$response = $openAIChat->sendMessage($messages);
       
$text = $openAIChat->get_response_text($response);
       
$messages = $openAIChat->append_response_to_messages($messages, $text);

        return
$messages;
    }
// end send_and_append()


   
function html_messages($messages)
    {
        if(empty(
$messages))
            return
'';

       
$html = '
            <style>
                .messages {
                    padding-bottom:200px;
                }
   
                .message_content textarea {
                width: 98%;
                /* height: 100%; */
                height:auto;
                border: none;
                background-color: transparent;
            }
            </style>


        '
;
       
$row_count = 0;
       
$even_odd = "odd";
        foreach(
$messages as $message)
        {
           
$the_content = htmlentities($message['content']);
           
$html .= '<div class="message '.$even_odd.'" row_count="'.$row_count.'" >';
           
$html .= '<div class="message_role">'.$message['role'].'</div>';
           
$html .= '<div class="message_content"><textarea class="autoExpand" name="message_content_textarea" row_count="'.
               
$row_count.'" onchange="btn_update_message_content(this);">'.
               
$the_content.'</textarea></div>';
           
$html .= '</div>';
           
$row_count++;
           
$even_odd = ($even_odd == "even") ? "odd" : "even";
        }
        return
$html;
    }
// end html_messages()

   
function change_message_content($messages, $index, $content)
    {
       
// will let us click and edit a message div and have ajax send back to server to change conversation history
       
$messages[$index]['content'] = $content;
        return
$messages;
    }
// end change_message_content()


   
function get_conversation_titles()
    {
       
$titles = [];
       
$files = glob('_saved/*.json');
        foreach(
$files as $file)
        {
           
$json = file_get_contents($file);
           
$json = json_decode($json, true);

           
// substr out the _saved/ part of the filename
           
$just_file = substr($file, strlen('_saved/') );

           
$titles[] = [
               
'title' => $json['title'],
               
'file' => $just_file
           
];
        }
        return
$titles;
    }
// end get_conversation_titles()

   
function html_conversation_combobox()
    {
       
// return the html for a dropdown combobox of all the saved conversations
       
$titles = get_conversation_titles();
       
$html = '<select id="conversation_combobox" name="conversation_combobox" >';
        foreach(
$titles as $title)
        {
           
$html .= '<option value="'.$title['file'].'">'.$title['title'].'</option>';
        }
       
$html .= '</select>';
        return
$html;
    }

    function
get_agents_titles()
    {
       
$titles = [];
       
$files = glob('_saved_agents/*.json');
        foreach(
$files as $file)
        {
           
$json = file_get_contents($file);
           
$json = json_decode($json, true);

           
// substr out the _agents/ part of the filename
           
$just_file = substr($file, strlen('_saved_agents/') );

           
$titles[] = [
               
'title' => $json['title'],
               
'file' => $just_file
           
];
        }
        return
$titles;
    }
// end get_agents_titles()

   
function html_agents_combobox()
    {
       
// return the html for a dropdown combobox of all the saved agents
       
$titles = get_agents_titles();
       
$html = '<select id="agents_combobox" name="agents_combobox" >';
        foreach(
$titles as $title)
        {
           
$html .= '<option value="'.$title['file'].'">'.$title['title'].'</option>';
        }
       
$html .= '</select>';
        return
$html;
    }
// end html_agents_combobox()

    # ---
    # gets ajax request and then returns json data and quits.
   
if(!empty($_GET['ajax']))
    {
        switch(
$_GET['ajax'])
        {
            case
'delete_conversation':
               
$file = $_POST['flds']['file'];
               
$file = trim($file);

                if(empty(
$file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "delete_conversation",
                       
"msg" => "file empty"
                   
);
                    break;
// error: no file specified
               
}
               
$file = '_saved/'.$file;
               
// if file doesn't exist error out
               
if(!file_exists($file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "delete_conversation",
                       
"msg" => "file does not exist"
                   
);
                    break;
// error: file does not exist
               
}

               
unlink($file);

               
$return_arr[] = array(
                   
"command" => 'alert',
                   
"process" => "delete_conversation",
                   
"msg" => "file deleted"
               
);

               
$return_arr[] = array(
                   
"command" => 'html',
                   
"selector" => '#conversation_combobox',
                   
"msg" => html_conversation_combobox()
                );

                break;

            case
'load_conversation':
               
$file = $_POST['flds']['file'];
               
$file = trim($file);

                if(empty(
$file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "load_conversation",
                       
"msg" => "file empty"
                   
);
                    break;
// error: no file specified
               
}
               
$file = '_saved/'.$file;
               
// if file doesn't exist error out
               
if(!file_exists($file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "load_conversation",
                       
"msg" => "file does not exist"
                   
);
                    break;
// error: file does not exist
               
}

               
$json = file_get_contents($file);
               
$json = json_decode($json, true);
               
$messages = $json['messages'];
               
$_SESSION['messages'] = $messages;
               
$messages_html = html_messages($messages);
               
$return_arr[] = array(
                   
"command" => 'html',
                   
"process" => "load_conversation",
                   
"selector" => '.output',
                   
"msg" => $messages_html
               
);

               
// update textareas
               
$return_arr[] = array(
                   
"command" => 'resize_textareas',
                   
"process" => "load_conversation"
               
);




                break;

            case
'save_conversation':
               
$conversation_title = $_POST['flds']['title'];
               
$messages = $_SESSION['messages'];
               
// now create a folder named '_saved' and save the conversation as a json file in that folder
                // file will be a timestamp_hash.json
                // json will be format:
                        // "title": "conversation title",
                        // "messages": {$_SESSION['messages']}

                // create folder if it doesn't exist
               
if(!file_exists('_saved'))
                    @
mkdir('_saved');

               
// if dir doesn't exist... abort with alert error
               
if(!file_exists('_saved'))
                {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "save_conversation",
                       
"msg" => "could not create _saved folder"
                   
);
                    break;
// error: could not create _saved folder
               
}

               
// create a unique filename
               
$filename = time().'_'.md5(time()).'.json';
               
$filepath = '_saved/'.$filename;

               
// save the file...
               
$json_data = array(
                   
"title" => $conversation_title,
                   
"messages" => $messages
               
);
               
$json_data = json_encode($json_data);

               
// store it to file
               
$result = file_put_contents($filepath, $json_data);


               
// create json data
               
$json_data = array(
                   
"title" => $conversation_title,
                   
"messages" => $messages
               
);

               
               
$return_arr[] = array(
                   
"command" => 'alert',
                   
"process" => "save_conversation",
                   
"msg" => "saved conversation"
               
);

               
$return_arr[] = array(
                   
"command" => 'val',
                   
'selector' => 'input[name="save-message_title"]',
                   
'msg' => ''
               
);

               
$return_arr[] = array(
                   
"command" => 'html',
                   
"selector" => '#conversation_combobox',
                   
"msg" => html_conversation_combobox()
                );
                   
                break;
// case 'save_conversation'
           
           

           
case 'change_message_content':
               
$index = $_POST['flds']['row_count'];
               
$content = $_POST['flds']['message_content'];

               
$messages = $_SESSION['messages'];
               
$messages = change_message_content($messages, $index, $content);
               
$_SESSION['messages'] = $messages;

               
$return_arr[] = array(
                   
"command" => 'alert',
                   
"process" => "change_message_content",
                   
"msg" => "changed message content",
                   
"index" => $index,
                   
"content" => $content
               
);
                break;
// case 'change_message_content'

           
case 'update_conversation':
               
$messages = $_SESSION['messages'];
               
$html_messages = html_messages($messages);
               
$return_arr[] = array(
                   
"command" => 'html',
                   
'selector' => '.output',
                   
'msg' => $html_messages
               
);
                break;
// case 'update_conversation'

           
case 'delete_agent':
               
$file = $_POST['flds']['file'];
               
$file = trim($file);

                if(empty(
$file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "delete_agent",
                       
"msg" => "file empty"
                   
);
                    break;
// error: no file specified
               
}
               
$file = '_saved_agents/'.$file;
               
// if file doesn't exist error out
               
if(!file_exists($file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "delete_agent",
                       
"msg" => "file does not exist"
                   
);
                    break;
// error: file does not exist
               
}

               
unlink($file);

               
$return_arr[] = array(
                   
"command" => 'alert',
                   
"process" => "delete_agent",
                   
"msg" => "file deleted"
               
);

               
$return_arr[] = array(
                   
"command" => 'html',
                   
"selector" => '#agents_combobox',
                   
"msg" => html_agents_combobox()
                );

                break;

            case
'save_agent':
               
$agent_name = $_POST['flds']['title'];
               
$agent = $_SESSION['agent'];

               
// create folder if it doesn't exist
               
if(!file_exists('_saved_agents'))
                    @
mkdir('_saved_agents');
               
               
// if dir doesn't exist... abort with alert error
               
if(!file_exists('_saved_agents'))
                {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "save_agent",
                       
"msg" => "could not create _saved_agents folder"
                   
);
                    break;
// error: could not create _saved_agents folder
               
}


               
// create a unique filename
               
$filename = time().'_'.md5(time()).'.json';
               
$filepath = '_saved_agents/'.$filename;

               
// save the file...
               
$json_data = array(
                   
"title" => $agent_name,
                   
"agent" => $agent
               
);
               
$json_data = json_encode($json_data);

               
// store it to file
               
$result = file_put_contents($filepath, $json_data);

               
$return_arr[] = array(
                   
"command" => 'alert',
                   
"process" => "save_agent",
                   
"msg" => "saved agent"
               
);

               
$return_arr[] = array(
                   
"command" => 'val',
                   
'selector' => 'input[name="save-agent_title"]',
                   
'msg' => ''
               
);

               
$return_arr[] = array(
                   
"command" => 'html',
                   
"selector" => '#agents_combobox',
                   
"msg" => html_agents_combobox()
                );

           
                break;
// case 'save_assistant'
               
           
case 'load_agent':
               
$file = $_POST['flds']['file'];
               
$file = trim($file);

                if(empty(
$file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "load_agent",
                       
"msg" => "file empty"
                   
);
                    break;
// error: no file specified
               
}
               
$file = '_saved_agents/'.$file;
               
// if file doesn't exist error out
               
if(!file_exists($file)) {
                   
$return_arr[] = array(
                       
"command" => 'alert',
                       
"process" => "load_agent",
                       
"msg" => "file does not exist"
                   
);
                    break;
// error: file does not exist
               
}

               
$json = file_get_contents($file);
               
$json = json_decode($json, true);

               
$agent = $json['agent'];
               
$_SESSION['agent'] = $agent;
               
               
$return_arr[] = array(
                   
"command" => 'val',
                   
"process" => "load_agent",
                   
"selector" => '#text_agent',
                   
"msg" => $agent
               
);



                break;
// case 'load_agent'


           
case 'one-shot':
               
// function one_shot($api_key, $prompt, $agent='You are a helpful assistant.', $temperature=1.0, $max_tokens=4000, $model="gpt-3.5-turbo")
                // returns text
                /*
            "prompt": $('textarea[name="prompt"]').val(),
            "agent": $('textarea[name="agent"]').val(),
            "temperature": $('input[name="temperature"]').val(),
            "max_tokens": $('input[name="max_tokens"]').val(),
                */
               
global $apiKey;
               
$prompt = $_POST['flds']['prompt'];
               
$agent = $_POST['flds']['agent'];
               
$temperature = $_POST['flds']['temperature'];
               
$max_tokens = 4000;
               
$model = $_POST['flds']['model'];
               
$api_key = $apiKey;

               
// trim and clean $prompt
               
$prompt = trim($prompt);

               
// if prompt empty return error
               
$text = one_shot($api_key, $prompt, $agent, $temperature, $max_tokens, $model);

               
$return_arr[] = array(
                   
"command" => 'val',
                   
"process" => "one-shot",
                   
"selector" => 'textarea[name="response"]',
                   
"msg" => $text
               
);

               
$return_arr[] = array(
                   
'command' => 'enable_input',
                   
'selector' => '.one_shot .the-button'
               
);


                break;
// case 'one-shot'
// ---------------------------------------------------------------------
           
case 'prompt':
                   
$prompt = $_POST['flds']['prompt'];

                   
// trim and clean $prompt
                   
$prompt = trim($prompt);

                   
// if prompt empty return error
                   
if(empty($prompt))
                    {
                       
$return_arr[] = array(
                           
"command" => 'alert',
                           
"process" => "prompt",
                           
"msg" => "prompt is empty"
                       
);
                    } else {
                       
$messages = $_SESSION['messages'];

                       
// first set agent
                       
$messages = $openAIChat->set_agent($messages, $_SESSION['agent']);

                       
$openAIChat->model = $_SESSION['model'];

                       
$openAIChat->temperature = (float) round($_SESSION['temperature'],1);
                       
$openAIChat->freq_penalty = (float) round($_SESSION['freq_penalty'],1);
                       
$openAIChat->pres_penalty = (float) round($_SESSION['pres_penalty'],1);

                       
$openAIChat->set_max_tokens( 4090 );

                       
// print_r($prompt);

                        // add prompt to messages conversation
                       
$messages = $openAIChat->add_prompt_to_messages($messages, $prompt);

                       
// print("\r\n\r\n");
                        // print_r($messages);

                       
$response = $openAIChat->sendMessage($messages);
                       
$text = $openAIChat->get_response_text($response);

                       
// print_r($response);
                        // print("\r\n\r\n-----------\r\n\r\n");
                        // print($text);

                        // if text empty return error
                       
if(empty($text))
                        {
                           
$return_arr[] = array(
                               
"command" => 'alert',
                               
"process" => "prompt",
                               
"msg" => "api error:returned nothing",
                               
"model" => $_SESSION['model'],
                               
"response" => $response
                           
);
                            break;
                        }
                       
                       
// append response to messages conversation
                       
$messages = $openAIChat->append_response_to_messages($messages, $text);

                       
// save messages to session
                       
$_SESSION['messages'] = $messages;

                       
$return_arr[] = array(
                           
"command" => 'success',
                           
"process" => "prompt",
                           
"prompt" => $prompt,
                           
"agent" => $_SESSION['agent'],
                           
"model" => $_SESSION['model'],
                           
"temperature" => $_SESSION['temperature'],
                           
"freq_penalty" => $_SESSION['freq_penalty'],
                           
"pres_penalty" => $_SESSION['pres_penalty'],
                           
"max_tokens" => $_SESSION['max_tokens'],
                           
"text" => $text,
                           
"response" => $response
                       
);

                       
$return_arr[] = array(
                           
"command" => 'update_conversation'
                       
);

                       
$return_arr[] = array(
                           
"command" => 'val',
                           
'selector' => 'textarea[name="text_prompt"]',
                           
'msg' => ''
                       
);

                       
$return_arr[] = array(
                           
'command' => 'html',
                           
'selector' => '.output',
                           
'msg' => html_messages($messages)
                        );

                       
$return_arr[] = array(
                           
'command' => 'enable_input',
                           
'selector' => '#send-button'
                       
);

                       
$return_arr[] = array(
                           
'command' => 'resize_textareas'
                       
);

       
                    }

                break;
// case 'prompt'
// ---------------------------------------------------------------------
           
           
case 'change_agent':
               
$agent = $_POST['flds']['agent'];

               
$_SESSION['agent'] = $agent;

               
$return_arr[] = array(
                   
"command" => 'success',
                   
"process" => "change_agent"
               
);

               
$return_arr[] = array(
                   
"command" => 'response_text',
                   
"agent" => $agent
               
);
                break;
// case 'change_agent'
           
           
case 'change_model':
               
$model = $_POST['flds']['model'];

               
$_SESSION['model'] = $model;

               
$return_arr[] = array(
                   
"command" => 'success',
                   
"process" => "change_model",
                   
"model" => $model
               
);


                break;
// case 'change_model'
           

           
case 'change_temperature':
               
$temperature = $_POST['flds']['temperature'];

               
$_SESSION['temperature'] = $temperature;

               
$return_arr[] = array(
                   
"command" => 'success',
                   
"process" => "change_temperature",
                   
"temperature" => $temperature
               
);

                print(
"TEMP CHANGED");

                break;
// case 'change_temperature'

           
case 'change_freq_penalty':
               
$freq_penalty = $_POST['flds']['freq_penalty'];

               
$_SESSION['freq_penalty'] = $freq_penalty;

               
$return_arr[] = array(
                   
"command" => 'success',
                   
"process" => "change_freq_penalty",
                   
"freq_penalty" => $freq_penalty
               
);

                break;
// case 'change_freq_penalty'

           
case 'change_pres_penalty':
               
$pres_penalty = $_POST['flds']['pres_penalty'];

               
$_SESSION['pres_penalty'] = $pres_penalty;

               
$return_arr[] = array(
                   
"command" => 'success',
                   
"process" => "change_pres_penalty",
                   
"pres_penalty" => $pres_penalty
               
);

                break;
// case 'change_pres_penalty'

           
case 'change_max_tokens':
               
$max_tokens = $_POST['flds']['max_tokens'];

               
$_SESSION['max_tokens'] = $max_tokens;

               
$return_arr[] = array(
                   
"command" => 'success',
                   
"process" => "change_max_tokens",
                   
"max_tokens" => $max_tokens
               
);

                break;
// case 'change_max_tokens'


           
case 'reset_messages':
               
$_SESSION['messages'] = [];


               
$return_arr[] = array(
                   
"command" => 'success',
                   
"process" => "reset_messages"
               
);

               
$return_arr[] = array(
                   
"command" => 'html',
                   
'selector' => '.output',
                   
'msg' => html_messages($_SESSION['messages'])
                );
               
                break;
// case 'reset_messages'

       
} // end switch($_GET['ajax'])
       
       
if(!empty($return_arr) && is_array($return_arr))
        die(
json_encode($return_arr));

        die();

    }
// end if(!empty($_GET['ajax']))



   
?>


    <!DOCTYPE html>
    <html lang="en">
    <head>
        <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js"></script>
        <script>
            // BEGIN --> JAVASCRIPT COMMAND PROCESSOR //
            function do_cmd_post(url, send_data)
            {
                $.post( url, { flds: send_data /* in php will appear as $_POST['flds'] */ },
                    function( return_data ) {
                    do_cmd_process(return_data);
                    }, "json" ); // punt any returned data to processor
                   
            }
            // ---
            function do_cmd_process(data) // handle data coming back from ajax
            {

                if (data instanceof Array) {
                    data.forEach(function(entry) {
                        console.log(entry.command);
                       
                        //console.log(entry.message);
                        // handle returned commands //
                        switch(entry.command)
                        {
                            // generic commands //
                            case 'alert':
                                alert(entry.msg);
                                break;
                            case 'log':
                                console.log(entry.msg);
                                break;
                            case 'append':
                                $(entry.selector).append(entry.msg);
                                break;
                            case 'prepend':
                                $(entry.selector).prepend(entry.msg);
                                break;
                            case 'html':
                                $(entry.selector).html(entry.msg);
                                break;
                            case 'val':
                                $(entry.selector).val(entry.msg);
                                break;
                            case 'focus':
                                $(entry.selector).focus();
                                break;
                            case 'blur':
                                $(entry.selector).blur();
                                break;
                            case 'clear':
                                $(entry.selector).val('');
                                break;
                            case 'js':
                                eval(entry.msg);
                                break;
                            case 'resize_textarea_to_fit_contents':
                                $(entry.selector).height(0);
                                $(entry.selector).height($(entry.selector)[0].scrollHeight);
                                break;
                            case 'disable_input':
                                $(entry.selector).prop('disabled', true);
                                break;
                            case 'enable_input':
                                $(entry.selector).prop('disabled', false);
                                break;

                            case 'resize_textareas':
                                $(".message_content textarea").each(function(){
                                    $(this).css("height", ($(this).prop("scrollHeight")) + "px");
                                });

                                break;

                        } // end : switch (entry.command)
                    }); // end : data.forEach(function(entry)
                } // end : if (data instanceof Array)
            } // end : function do_cmd_process(data)


            // END --> JAVASCRIPT COMMAND PROCESSOR //

           
        </script>


    </head>
    <body>


    <br /><br />

    <?php
   
    ?>

    <div class='output' id="output" style='width: 100%; overflow: scroll; border: 1px solid #000;'><?php echo html_messages($_SESSION['messages']); ?></div>
    <div class='row'>
        <input type='text' name='save-message_title' id='save-message_title' value='' placeholder='Save Conversation Title' />
        <input type='button' value='Save Conversation' onclick='btn_save_conversation();' />
        <?php echo html_conversation_combobox(); ?>
<input type='button' value='Load Conversation' onclick='btn_load_conversation();' />
        <input type='button' value='Delete Conversation' onclick='btn_delete_conversation();' />
        <input type='button' value='Reset Conversation' onclick='btn_reset_messages();' />
    </div>
    <br />
    <br />

    <textarea name="text_agent" id='text_agent'
        onchange="btn_change_agent();"
        style='width: 100%; height: 100px; overflow: scroll; border: 1px solid #000;'
        ><?php echo $_SESSION['agent']; ?></textarea>
    <div class='row'>
        <input type='text' name='save-agent_title' id='save-agent_title' value='' placeholder='Save Agent Title' />
        <input type='button' value='Save Agent' onclick='btn_save_agent();' />
        <?php echo html_agents_combobox(); ?>
<input type='button' value='Load Agent' onclick='btn_load_agent();' />
        <input type='button' value='Update Agent' onclick='btn_change_agent();' />
        <input type='button' value='Delete Agent' onclick='btn_delete_agent();' />
    </div>
   

    <br /><br />

    <textarea name="text_prompt" style='width: 100%; height: 100px; overflow: scroll; border: 1px solid #000;'></textarea>
    <input type='button' id='send-button' value='Send Prompt' onclick='btn_send_prompt();' />
    <br /><br />


    <!-- a combo box to select between gpt-3.5-turbo and gpt-4 -->
    <select id="model" name="model" onchange="btn_change_model();">
    <option value="gpt-3.5-turbo" <?php if($_SESSION['model']=="gpt-3.5-turbo") echo "SELECTED" ?> >gpt-3.5-turbo</option>
    <option value="gpt-3.5-turbo-16k" <?php if($_SESSION['model']=="gpt-3.5-turbo-16k") echo "SELECTED" ?> >gpt-3.5-turbo-16k</option>
        <option value="gpt-4" <?php if($_SESSION['model']=="gpt-4") echo "SELECTED" ?>>gpt-4</option>
        <option value="gpt-4-32k" <?php if($_SESSION['model']=="gpt-4-32k") echo "SELECTED" ?>>gpt-4-32k</option>
    </select>


    <script>
        function btn_delete_agent()
        {
            // confirm delete //
            if(!confirm('Are you sure you want to delete this agent?'))
                return;

            var send_data = {
                "file": $('select[name="agents_combobox"]').val()
            };

            do_cmd_post('example.phpopenaichat.php?ajax=delete_agent', send_data);
        }

        function btn_save_agent()
        {
            // data already on server so just send a title.
            var send_data = {
                "title": $('input[name="save-agent_title"]').val()
            };

            do_cmd_post('example.phpopenaichat.php?ajax=save_agent', send_data);
        }

        function btn_load_agent()
        {
            var send_data = {
                "file": $('select[name="agents_combobox"]').val()
            };

            do_cmd_post('example.phpopenaichat.php?ajax=load_agent', send_data);
        }


        function btn_delete_conversation()
        {
            // confirm delete
            if(!confirm('Are you sure you want to delete this conversation?'))
                return;

            var send_data = {
                "file": $('select[name="conversation_combobox"]').val()
            };

            do_cmd_post('example.phpopenaichat.php?ajax=delete_conversation', send_data);
        }

        function btn_load_conversation()
        {
            var send_data = {
                "file": $('select[name="conversation_combobox"]').val()
            };

            do_cmd_post('example.phpopenaichat.php?ajax=load_conversation', send_data);
        }

        function btn_save_conversation()
        {
            // data already on server so just send a title.
            // if title empty, alert and abort.
            if($('input[name="save-message_title"]').val()=='')
            {
                alert('Please enter a title for this conversation.');
                return;
            }

            var send_data = {
                "title": $('input[name="save-message_title"]').val()
            };

            do_cmd_post('example.phpopenaichat.php?ajax=save_conversation', send_data);
        }

        function btn_send_prompt()
        {
            // disable #send-button
            $('#send-button').prop('disabled', true);

            // confirm
            if(!confirm('Are you sure you want to send this prompt?'))
            {
                $('#send-button').prop('disabled', false);
                return;
            }

            var send_data = {
                "prompt": $('textarea[name="text_prompt"]').val(),
            };

            do_cmd_post('example.phpopenaichat.php?ajax=prompt', send_data);
        }

        function btn_change_agent()
        {
            // confirm changes
            if(!confirm('Are you sure you want to change the agent on the server? (server must have an agent sent for it to process an agent)'))
                return;

            var send_data = {
                "agent": $('textarea[name="text_agent"]').val(),
            };

            do_cmd_post('example.phpopenaichat.php?ajax=change_agent', send_data);
        }

        function btn_change_model()
        {
            var send_data = {
                "model": $('select[name="model"]').val(),
            };

            do_cmd_post('example.phpopenaichat.php?ajax=change_model', send_data);
        }

        function btn_change_temp()
        {
            var send_data = {
                "temperature": $('input[name="temperature"]').val(),
            };

            do_cmd_post('example.phpopenaichat.php?ajax=change_temperature', send_data);
        }

        function btn_change_freq_penalty()
        {
            var send_data = {
                "freq_penalty": $('input[name="freq_penalty"]').val(),
            };

            do_cmd_post('example.phpopenaichat.php?ajax=change_freq_penalty', send_data);
        }

        function btn_change_pres_penalty()
        {
            var send_data = {
                "pres_penalty": $('input[name="pres_penalty"]').val(),
            };

            do_cmd_post('example.phpopenaichat.php?ajax=change_pres_penalty', send_data);
        }

        function btn_reset_messages()
        {
            var send_data = {
                "reset_messages": 1,
            };

            do_cmd_post('example.phpopenaichat.php?ajax=reset_messages', send_data);
        }

        function btn_max_tokens()
        {
            var send_data = {
                "max_tokens": $('input[name="max_tokens"]').val(),
            };

            do_cmd_post('example.phpopenaichat.php?ajax=change_max_tokens', send_data);
        }


        function btn_edit_in_place()
        {
            /*
                $html .= '<div class="message" row_count="'+$row_count+'" >';
                $html .= '<div class="message_role">'.$message['role'].'</div>';
                $html .= '<div class="message_content" onclick="btn_edit_in_place();">'.$message['content'].'</div>';
                $html .= '</div>';
            */

            /* swap out the div with a textarea */
            var row_count = 1;
            var message_content = $('div.message_content[row_count="'+row_count+'"]').html();
            $('div.message_content[row_count="'+row_count+'"]').html('<textarea name="message_content" row_count="'+row_count+'" style="width: 100%; height: 100px; overflow: scroll; border: 1px solid #000;">'+message_content+'</textarea>');

   
        }
      
        function btn_update_message_content(that)
        {
            the_row = $(that).attr('row_count');
            the_msg = $(that).val();
            // var row_count = $('textarea[name="message_content"]').attr('row_count');
            // var message_content = $('textarea[name="message_content_textarea"]').val();

            // alert(the_msg);
            // alert(the_row);

            var send_data = {
                "row_count": the_row,
                "message_content": the_msg,
            };


            // get user confirmation to continue
            if(confirm("Are you sure you want to update the message content?"))
            {
                do_cmd_post('example.phpopenaichat.php?ajax=change_message_content', send_data);
            } else {
                alert("reload page to restore original message content.");
            }


        }

       
    </script>

    <br /><br />

    <!-- a slider to select temperature -->
    <label for="temperature">Temperature</label>
    <input type="range" id="temperature" onchange="btn_change_temp();" name="temperature" min="0.0" max="2.0" step="0.1" value="<?php echo $_SESSION["temperature"] ?>">
    <div id="temperature_value"></div>

    <!-- a slider to select frequency penalty -->
    <label for="freq_penalty">Frequency Penalty</label>
    <input type="range" id="freq_penalty" onchange="btn_change_freq_penalty();" name="freq_penalty" min="0.0" max="1.0" step="0.1" value="<?php echo $_SESSION["freq_penalty"] ?>">
    <div id="freq_penalty_value"></div>

    <!-- a slider to select presence penalty -->
    <label for="pres_penalty">Presence Penalty</label>
    <input type="range" id="pres_penalty" onchange="btn_change_pres_penalty();" name="pres_penalty" min="0.0" max="1.0" step="0.1" value="<?php echo $_SESSION["pres_penalty"] ?>">
    <div id="pres_penalty_value"></div>

    <!-- a text input to select max tokens -->
    <label for="max_tokens">Max Tokens</label>
    <input type="number" id="max_tokens" onchange="btn_max_tokens();" name="max_tokens" min="1" max="100" value="<?php echo $_SESSION["max_tokens"] ?>">
    <br /><br />


    <!-- reset messages button -->
    <input type='button' value='Reset Messages' onclick='btn_reset_messages();' />
    <br /><br />


    <!-- jquery to add a div under the sliders to show the current value of the sliders. -->
    <script>
        $(document).ready(function(){
            $('#temperature_value').html($('#temperature').val());
            $('#freq_penalty_value').html($('#freq_penalty').val());
            $('#pres_penalty_value').html($('#pres_penalty').val());
        });
    </script>

    <!-- jquery to update the divs when the sliders are moved -->
    <script>
        $(document).ready(function(){
            $('#temperature').on('input', function() {
                $('#temperature_value').html($('#temperature').val());
            });
            $('#freq_penalty').on('input', function() {
                $('#freq_penalty_value').html($('#freq_penalty').val());
            });
            $('#pres_penalty').on('input', function() {
                $('#pres_penalty_value').html($('#pres_penalty').val());
            });
        });
    </script>

<pre>
    <?php
       
// print_r($_SESSION['messages']);
   
?>
</pre>


<script>
    // make tab character act like a normal tab character in textareas
   
    $(document).delegate('textarea', 'keydown', function(e) {
        var keyCode = e.keyCode || e.which;

        if (keyCode == 9) {
            e.preventDefault();
            var start = $(this).get(0).selectionStart;
            var end = $(this).get(0).selectionEnd;

            // set textarea value to: text before caret + tab + text after caret
            $(this).val($(this).val().substring(0, start)
                        + "\t"
                        + $(this).val().substring(end));

            // put caret at right position again
            $(this).get(0).selectionStart =
            $(this).get(0).selectionEnd = start + 1;
        }
    });
   

</script>




<script>
            // javascript to handle expanding textarea to fit content height whenever focus is on it and user is typing
            $(document).ready(function(){
                // $(".message_content textarea").css("height", "auto");
                // set each textarea on load to the size of its contents in the .messages area
                $(".message_content textarea").each(function(){
                    $(this).css("height", ($(this).prop("scrollHeight")) + "px");
                });

                // handle dynamic loaded divs



                $(".message_content textarea").on("focus", function(){
                    // $(this).css("height", "auto");
                    $(this).css("height", ($(this).prop("scrollHeight")) + "px");
                });
               
                $(".message_content textarea").on("blur", function(){
                    // $(this).css("height", "auto");
                    $(this).css("height", ($(this).prop("scrollHeight")) + "px");
                });
               

                $(".message_content textarea").on("change", function(){
                    // $(this).css("height", "auto");
                    $(this).css("height", ($(this).prop("scrollHeight")) + "px");
                });
               

                // $(".message_content textarea").on("keyup", function(){
                // $(this).css("height", "auto");
                // // $(this).css("height", ($(this).prop("scrollHeight")) + "px");
                // });



               
            });
</script>


<style>
    .messages {
    }

    .message {
        border-bottom: 3px solid red;
    }

    .message.even {
        background-color: #eee;
    }

    .message_content {
        padding:3vw;
    }
    </style>




<!-- one shot section -->
<hr />
<?php
   
function one_shot($api_key, $prompt, $agent='You are a helpful assistant.', $temperature=1.0, $max_tokens=4000, $model="gpt-3.5-turbo")
    {
       
$temperature = (float) round($temperature,1);
       
$max_tokens = (int) $max_tokens;


       
// if $prompt empty return '' else get response and return the text...
       
$messages = [];
       
$AIChat = new PHPOpenAIChat($api_key);

       
$AIChat->model = $model;
       
$AIChat->temperature = $temperature;
       
$AIChat->set_max_tokens($max_tokens);

       
$AIChat->set_agent($messages, $agent);
       
$messages = $AIChat->add_prompt_to_messages($messages, $prompt);


        if (empty(
$prompt))
            return
'';
        else
        {
           
$response = $AIChat->sendMessage($messages);
           
$text = $AIChat->get_response_text($response);
           
// print_r($response);
           
return $text;
        }

    }
// end one_shot()


?>
<style>
    .one_shot {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        grid-gap: 1vw;
    }
    .one_shot .col {
        padding: 1vw;
    }
    .one_shot textarea {
        width: 100%;
        height: 10vw;
    }
    .one_shot input {
        width: 100%;
    }


    </style>
<div class='title'>One Shot Section - Enter a prompt and get a single one-off response</div>
<div class='one_shot'>
    <div class='col'><textarea class='prompt' name='prompt' id='prompt' placeholder='prompt'></textarea></div>
    <div class='col'><textarea class='agent' name='agent' id='agent' placeholder='agent'></textarea></div>
    <div class='col'><textarea class='response' name='response' id='response' placeholder='response'></textarea></div>
   
    <!-- model combo box -->
    <!-- a combo box to select between gpt-3.5-turbo and gpt-4 -->
    <select id="model" name="model" onchange="btn_change_model();">
        <option value="gpt-3.5-turbo" <?php if($_SESSION['model']=="gpt-3.5-turbo") echo "SELECTED" ?> >gpt-3.5-turbo</option>
        <option value="gpt-4" <?php if($_SESSION['model']=="gpt-4") echo "SELECTED" ?>>gpt-4</option>
    </select>
    <div class='col'><input type='text' class='temperature' name='temperature' id='temperature' placeholder='temperature' value='1.0' /></div>
   
    <div class='col'><input type='button' class='the-button' value='One Shot' onclick='btn_one_shot();' /></div>

</div><!-- end one shot section -->

<script>
    function btn_one_shot()
    {
        var send_data = {
            "prompt": $('textarea[name="prompt"]').val(),
            "agent": $('textarea[name="agent"]').val(),
            "temperature": $('input[name="temperature"]').val(),
            "max_tokens": $('input[name="max_tokens"]').val(),
            "model": $('select[name="model"]').val(),
        };

        // disable #send-button
        $('.one_shot .the-button').prop('disabled', true);

        do_cmd_post('example.phpopenaichat.php?ajax=one-shot', send_data);
    }
</script>
   
    </body>
    </html>

   


Screenshots  
  • screenshot.phpopenaichat.png
  Files folder image Files  
File Role Description
Plain text file class.phpopenaichat.php Class A php class to use the OpenAI API chat completions to chat with a GPT-3.5 or a GPT-4 model.
Accessible without login Plain text file example.phpopenaichat.php Example An example using the class PHPOpenAIChat

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