If you see this code... avoid the project! :-)

avoid.php

$a = getAllCars();
foreach ($a as $a1) {
    $b1 = $a1;
    $b1['name'] = $a1['name'] . '_';

    // ... about 100 lines later...

    if ($b1['name'] == $a1['name']) {
        save($a2);
    } else {
        save($c);
    }
}