What are the implications of using base64_encode() or urlencode() on serialized data in PHP?

When using base64_encode() or urlencode() on serialized data in PHP, it can cause issues with the serialization format and potentially corrupt the data when trying to unserialize it later. To avoid this problem, you can use base64_encode() before serialization and base64_decode() after unserialization to ensure the data remains intact.

// Encode serialized data before storing
$serializedData = serialize($data);
$encodedData = base64_encode($serializedData);

// Decode serialized data after retrieving
$decodedData = base64_decode($encodedData);
$unserializedData = unserialize($decodedData);