PHP code example of php-unified / state

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

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

    

php-unified / state example snippets

$output = [
    'packages' => '',
    'states' => [
        'name' => 'php-unified/state',
        'version' => '1.0.0'
    ]
]

use PhpUnified\State\State;
use Application\Database\Connection;
use Application\Logger\Logger;

$systemState = new State();
$systemState->setIdentifier('system-state');

$databaseTransactionState = new State();
$databaseTransactionState->setIdentifier('last-db-transaction-state');

$systemState->addState($databaseTransactionState);

$logger = new Logger();
$connection = new Connection($databaseTransactionState);
try {
    $connection->doQuery();
} catch (Throwable $e) {
    $logger->log('warning', $e->getMessage());
    $logger->info($systemState->__toString());
}

namespace Application\Database;

use PhpUnified\State\Common\StateInterface;

class Connection
{
    /**
     * State tracker
     *
     * @var StateInterface
     */
    private $state;

    /**
     * Constructor
     *
     * @param StateInterface $state
     */
    public function __construct(StateInterface $state)
    {
        $this->state = $state;
    }

    /**
     * Fictional doQuery function
     *
     * @return void
     */
    public function doQuery(): void
    {
        $state->setValue('Starting database connection');
        $connection = connectToDatabase();

        $state->setValue('Starting transaction');
        $connection->startTransaction();

        $state->setValue('Executing transaction');
        if($connection->doTransaction()) {
            $state->setValue(
                sprintf(
                    'Transaction with id %d transaction success',
                    $connection->getLastTransactionId()
                )
            );
            return true;
        }

        $state->setValue('Rolling back transaction');
        $connection->rollBackTransaction();
        $state->setValue('Rollback executed');
    }
}