newznab-tmux/misc/testing/Tests/transactiontest.php

<?php

require_once dirname(__DIR__, 3).DIRECTORY_SEPARATOR.'bootstrap/autoload.php';

use nntmux\db\DB;

try {
    // Create the first database class instance (which will initialize the PDO connection)
    $db = new DB();

    // For debug set the error mode
    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    // Start the transaction
    if ($db->beginTransaction()) {
        // Loop 20 times
        for ($i = 1; $i <= 20; $i++) {
            // Header
            echo "--[ Insert run: {$i} ]----------------------------------------".PHP_EOL;

            // Create a new db class instance (multiple can exist)
            $newDb = new DB();

            // Check that there is a new db class instance, but no new PDO instance
            var_dump($newDb, $newDb->getPDO());

            // Insert some data
            $sql = sprintf(
                "
                INSERT INTO `testdata`
                (`id` ,`field1` ,`field2` ,`field3` ,`field4`)
                VALUES
                ('%s', '%s', '%s', '%s', '%s')",
                $i,
                $i,
                $i,
                $i,
                $i
            );
            $newDb->exec($sql);

            // Check for inserted data
            var_dump($newDb->query(sprintf('SELECT * FROM `testdata` WHERE id = %d', $i)));
        }

        // Now rollback using the last db class instance
        var_dump($newDb->rollback());
    }
} catch (PDOException $e) {
    var_dump($e);
}