How do I implement caching in PHP?

How do I implement caching in PHP?

To implement caching in PHP, you can use various methods like file caching, memory caching with Redis, or APCu. Which one are you interested in?

I think file caching would be a good start. How do I set that up?

For file caching, you can create a directory to store your cache files. Use file_put_contents() to save data and file_get_contents() to retrieve it. Would you like a code example?

Yes, please provide a code example.

Here's a simple example:

// Set cache file path
$cacheFile = 'cache/data.txt';

// Check if cache file exists and is fresh
if (file_exists($cacheFile) && (time() - filemtime($cacheFile) < 3600)) {
    // Read from cache
    $data = file_get_contents($cacheFile);
} else {
    // Fetch new data
    $data = 'New data fetched';
    // Save to cache
    file_put_contents($cacheFile, $data);
}