I want to save some data which is in array form and used this to save array but it will save Array keyword in this How to save array values with this.
$this->configWriter->save('my/path/whatever1', $newdata, $scope = ScopeConfigInterface::SCOPE_TYPE_DEFAULT, $scopeId = 0);
In order to save array in config database you can convert array to serialized string.
Inject Serializer Class in your constructor.
public function __construct( ...,
\Magento\Framework\Serialize\SerializerInterface $serializer) {
/*** You other code ***/
$this->serializer = $serializer;
}
Use the serialize() to convert array to serialized string.
$serializedData = $this->serializer->serialize($newdata);
$this->configWriter->save('my/path/whatever1', $serializedData, $scope = ScopeConfigInterface::SCOPE_TYPE_DEFAULT, $scopeId = 0);
You can convert the serialized string back to array wherever you wanna use the value as
$arrData = $this->serializer->unserialize($serializedData);
Hope it was helpful.
Thanks
