README

Known as Polska Klasyfikacja Działalności (PKD). Package provides list of subclasses with their description for revisions:

• 2004 - NACE Rev 1
• 2007 - NACE Rev 2
• 2025 - NACE Rev 2.1

Usage

To check if given PKD exists in given revision:

use SrsBiz\PolishNaceCodes\{Pkd, Version};

$exists = Pkd::isValid('12.34.X', Version::Pkd2025);

To get description of given PKD:

use SrsBiz\PolishNaceCodes\{Pkd, Version};

try {
    $description = Pkd::getDescription('62.20.A', Version::Pkd2025);
} catch (\InvalidArgumentException $exception) {
    // Given PKD does not exist in this revision
}

To get possible substitutes:

use SrsBiz\PolishNaceCodes\{Pkd, Version};

try {
    $pkd = '01.11.Z'
    $substitutes = Pkd::migrate($pkd, Version::Pkd2007, Version::Pkd2025);
    if ($pkd === $substitutes) {
        // Meaning for given PKD was not changed
    }
    elseif (is_array($substitutes)) {
        // List of possible substitutes 
    }
} catch (\InvalidArgumentException $exception) {
    // Given PKD does not exist
}