What potential issues could arise when including and caching PHP scripts?

One potential issue that could arise when including and caching PHP scripts is that changes made to the included script may not be reflected immediately due to the cached version being served. To solve this, you can set a cache expiration time or clear the cache whenever changes are made to the included script. 

// Set cache expiration time
$cache_expiration_time = 3600; // 1 hour
$cache_file = 'cached_script.php';

// Check if cached version exists and is not expired
if (file_exists($cache_file) && time() - filemtime($cache_file) < $cache_expiration_time) {
    include($cache_file);
} else {
    ob_start();
    // Include and execute the script
    include('included_script.php');
    $cached_script = ob_get_contents();
    ob_end_clean();
    
    // Save the cached version
    file_put_contents($cache_file, $cached_script);
    
    echo $cached_script;
}

Keywords

include caching PHP scripts performance memory consumption

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