for ($i = 0; $i < 100; $i =+ 3) {
$array[$i]; // Первый элемент
$array[$i + 1]; // Второй элемент
$array[$i + 2]; // Третийэлемент
}$uniqObjects = [];
foreach ($notUniqObjects as $object) {
foreach ($uniqObjects as $uniqObject) {
if ($uniqObject->targetProperty == $object->targetProperty) {
continue 2;
}
}
$uniqObjects[] = $object;
}