Installation

Requirements

• PHP 8.3 or newer
• The mbstring extension

The package has no other runtime dependencies. It does not call any external service.

Install with Composer

composer require risan/sentiment-analysis

Composer sets up autoloading for you. In a plain script, require the autoloader once:

require __DIR__ . '/vendor/autoload.php';

Check that it works

<?php

declare(strict_types=1);

require __DIR__ . '/vendor/autoload.php';

use Risan\Sentiment\Sentiment;

echo Sentiment::analyze('Installation was great!')->label->value;

Run it with php check.php. It should print positive.

Verify the extension

If Composer complains about ext-mbstring, check that it is enabled:

php -m | grep mbstring

On Debian and Ubuntu, install it with sudo apt install php-mbstring. The official Docker images of PHP include it already.

Upgrading from v1

Version 2 is a rewrite with a new namespace and a new API. If you are coming from the 1.x line, read Upgrading from v1.