What are the different types of caching in PHP?

Caching in PHP helps improve performance by storing frequently accessed data in memory or disk, reducing the need to regenerate the data each time it is requested. There are different types of caching in PHP, including in-memory caching, opcode caching, and data caching using tools like Memcached or Redis. 

// Example of in-memory caching using PHP's built-in APCu extension
$key = 'example_key';
$data = apcu_fetch($key);

if ($data === false) {
    // Data is not in cache, fetch and store it
    $data = fetchDataFromDatabase();
    apcu_store($key, $data, 3600); // Cache data for 1 hour
}

// Use the cached data
echo $data;

Keywords

Opcode caching Data caching Output caching Memcached APC

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