small function
/**
* Diff of two Object Collections
*
* @param Collection $collection1
* @param Collection $collection2
* @param string[] $fieldsToOmit - fields to omit from comparison
* @return Collection|ArrayCollection
*/
public function diffArrayCollection(
Collection $collection1,
Collection $collection2,
array $fieldsToOmit = ['id']
): Collection {
$diff = array_udiff(
$collection1->toArray(),
$collection2->toArray(),
function (object $obj1, object $obj2) use ($fieldsToOmit) {
$obj1array = json_decode(
json_encode(
$this->arrayFilterByKeys($this->normalize($obj1), $fieldsToOmit)
),
true
);
$obj2array = json_decode(
json_encode(
$this->arrayFilterByKeys($this->normalize($obj2), $fieldsToOmit)
),
true
);
return strcmp(http_build_query($obj1array), http_build_query($obj2array));
}
);
return new ArrayCollection($diff);
}
private function normalize(object $object): array
{
$serializer = SerializerBuilder::create()->build();
return json_decode($serializer->serialize($object, 'json'), true);
}
private function arrayFilterByKeys(array $array, array $keys): array
{
$result = [];
foreach ($array as $name => $value) {
if (!in_array($name, $keys)) {
if (is_array($value)) {
$result[$name] = $this->arrayFilterByKeys($value, $keys);
} else {
$result[$name] = $value;
}
}
}
return $result;
}