PHP code example of subhashladumor1 / larachain

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

subhashladumor1 / larachain example snippets

use LaraChain\Prompts\PromptTemplate;
use LaraChain\Models\ChatModel;
use LaraChain\Parsers\JsonParser;

$chain = PromptTemplate::make('Extract data from this text: {text} into JSON format.')
    ->pipe(new ChatModel('gpt-4o'))
    ->pipe(new JsonParser());

$output = $chain->invoke(['text' => 'My name is John and I live in London.']);
// Returns: ['name' => 'John', 'location' => 'London']

use LaraChain\Agents\AgentExecutor;
use LaraChain\Toolkits\FileToolkit;

$agent = AgentExecutor::make()
    ->tools((new FileToolkit())->getTools());

$response = $agent->run("Read config.json and summarize it in readme.md");

use LaraChain\TextSplitters\RecursiveCharacterTextSplitter;
use LaraChain\VectorStores\PostgresVectorStore;
use LaraChain\Embeddings\EmbeddingModel;

$splitter = new RecursiveCharacterTextSplitter(chunkSize: 1000, chunkOverlap: 200);
$chunks = $splitter->splitText($largePdfContent);

$store = new PostgresVectorStore(new EmbeddingModel());
$store->addTexts($chunks);

'default' => [
    'llm' => 'openai',
    'vectorstore' => 'postgres',
],

'llms' => [
    'openai' => ['model' => 'gpt-4o'],
    'anthropic' => ['model' => 'claude-3-5-sonnet'],
],

// Use Anthropic instead of the default OpenAI
$model = LaraChain::model('anthropic');

// Use a specific vector store
$vectorStore = LaraChain::vectors()->driver('memory');

// Chain them together
$chain = PromptTemplate::make('Hello {name}')
    ->pipe($model)
    ->pipe(new JsonParser());