What are the benefits of serializing data in PHP for caching purposes?

When caching data in PHP, it is important to serialize the data before storing it in order to preserve its structure and data types. Serializing data converts complex data structures, such as arrays or objects, into a string format that can be easily stored and retrieved. This ensures that the data can be accurately reconstructed when retrieved from the cache.

// Serialize data before storing in cache
$data = ['key' => 'value', 'number' => 123];
$serializedData = serialize($data);

// Store serialized data in cache
$cacheKey = 'cached_data';
$cache->set($cacheKey, $serializedData);

// Retrieve and unserialize data from cache
$serializedData = $cache->get($cacheKey);
$data = unserialize($serializedData);

// Use the unserialized data
echo $data['key']; // Output: value
echo $data['number']; // Output: 123