// Start the session session_start(); // Set a value in the session cache $_SESSION['my_data'] = 'Hello, world!'; // Retrieve the data from the cache echo $_SESSION['my_data'];
// Set the cache directory $cache_dir = '/tmp/'; // Check if the cache file exists if (file_exists($cache_dir . 'my_data.cache')) { // Retrieve the data from the cache $my_data = file_get_contents($cache_dir . 'my_data.cache'); } else { // Set the data and store it in the cache $my_data = 'Hello, world!'; file_put_contents($cache_dir . 'my_data.cache', $my_data); } // Display the data echo $my_data;It is important to note that the PHP Core cache is not a package library. Instead, it is built into the PHP language itself and is available on all PHP installations.