FM / functions

/home/techb158/balacoffee.com/wp-content/plugins/wp-rocket/inc/functions/

/home/techb158/balacoffee.com/wp-content/plugins/wp-rocket/inc/functions

Name	Size	Mode	Actions
admin.php	14736	0644	edit dl rm
api.php	3292	0644	edit dl rm
files.php	43091	0644	edit dl rm
formatting.php	15125	0644	edit dl rm
htaccess.php	23853	0644	edit dl rm
i18n.php	17661	0644	edit dl rm
options.php	20823	0644	edit dl rm
posts.php	2531	0644	edit dl rm

Edit: /home/techb158/balacoffee.com/wp-content/plugins/wp-rocket/inc/functions/files.php (43091B)

<?php

use WP_Rocket\Logger\Logger;
use WP_Rocket\Engine\Cache\AdvancedCache;

defined( 'ABSPATH' ) || exit;

/**
 * Creates the advanced-cache.php file.
 *
 * @since 3.6 Uses AdvancedCache::get_advanced_cache_content().
 * @since 2.0
 *
 * @param AdvancedCache $advanced_cache Optional. Instance of the advanced cache handler.
 */
function rocket_generate_advanced_cache_file( $advanced_cache = null ) {
	/**
	 * Filters whether to generate the advanced-cache.php file.
	 *
	 * @since 3.6.3
	 *
	 * @param bool True (default) to go ahead with advanced cache file generation; false to stop generation.
	 */
	if ( ! (bool) apply_filters( 'rocket_generate_advanced_cache_file', true ) ) {
		return false;
	}

static $done = false;

if ( rocket_get_constant( 'WP_ROCKET_IS_TESTING', false ) ) {
		$done = false;
	}

if ( $done ) {
		return false;
	}
	$done = true;

if ( is_null( $advanced_cache ) ) {
		$container      = apply_filters( 'rocket_container', null );
		$advanced_cache = $container->get( 'advanced_cache' );
	}

return rocket_put_content(
		rocket_get_constant( 'WP_CONTENT_DIR' ) . '/advanced-cache.php',
		$advanced_cache->get_advanced_cache_content()
	);
}

/**
 * Generates the configuration file for the current domain based on the values of options
 *
 * @since 2.0
 *
 * @return array Names of all config files & The content that will be printed
 */
function get_rocket_config_file() { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
	$options = get_option( WP_ROCKET_SLUG );

if ( ! $options ) {
		return [
			[],
			'',
		];
	}

$buffer  = "<?php\n";
	$buffer .= "defined( 'ABSPATH' ) || exit;\n\n";

$buffer .= '$rocket_cookie_hash = \'' . COOKIEHASH . "';\n";
	$buffer .= '$rocket_logged_in_cookie = \'' . LOGGED_IN_COOKIE . "';\n";

/**
	 * Filters the activation of the common cache for logged-in users.
	 *
	 * @since 2.10
	 * @author Remy Perona
	 *
	 * @param bool True to activate the common cache, false to ignore.
	 */
	if ( apply_filters( 'rocket_common_cache_logged_users', false ) ) {
		$buffer .= '$rocket_common_cache_logged_users = 1;' . "\n";
	}

if ( ! empty( $options['cache_webp'] ) ) {
		/** This filter is documented in inc/classes/buffer/class-cache.php */
		$disable_webp_cache = apply_filters( 'rocket_disable_webp_cache', false );

if ( $disable_webp_cache ) {
			$options['cache_webp'] = 0;
		}
	}

/**
	 * Filters the use of the mobile cache version for tablets
	 * 'desktop' will serve desktop to tablets, 'mobile' will serve mobile to tablets
	 *
	 * @since 3.2
	 * @author Remy Perona
	 *
	 * @param string $tablet_version valid values are 'mobile' or 'desktop'
	 */
	$buffer .= '$rocket_cache_mobile_files_tablet = \'' . apply_filters( 'rocket_cache_mobile_files_tablet', 'desktop' ) . "';\n";

foreach ( $options as $option => $value ) {
		if ( 'cache_ssl' === $option ) {
			if ( 1 !== (int) $value ) {
				if ( rocket_is_ssl_website() ) {
					update_rocket_option( 'cache_ssl', 1 );
					$value = 1;
				}
			}

$buffer .= '$rocket_' . $option . ' = ' . (int) $value . ";\n";
		}

if ( 'cache_mobile' === $option || 'do_caching_mobile_files' === $option || 'cache_webp' === $option ) {
			$buffer .= '$rocket_' . $option . ' = ' . (int) $value . ";\n";
		}

if ( 'secret_cache_key' === $option ) {
			$buffer .= '$rocket_' . $option . ' = \'' . sanitize_key( $value ) . "';\n";
		}

if ( 'cache_reject_uri' === $option ) {
			$buffer .= '$rocket_' . $option . ' = \'' . get_rocket_cache_reject_uri( true ) . "';\n";
		}

if ( 'cache_query_strings' === $option ) {
			$buffer .= '$rocket_' . $option . ' = ' . call_user_func( 'var_export', get_rocket_cache_query_string(), true ) . ";\n";
		}

if ( 'cache_reject_cookies' === $option ) {
			$cookies = get_rocket_cache_reject_cookies();

if ( $cookies && get_rocket_option( 'cache_logged_user' ) ) {
				// Make sure the "logged-in cookies" are not rejected.
				$logged_in_cookie = explode( COOKIEHASH, LOGGED_IN_COOKIE );
				$logged_in_cookie = array_map( 'preg_quote', $logged_in_cookie );
				$logged_in_cookie = implode( '[^|]*', $logged_in_cookie );
				$cookies          = preg_replace( '/\|' . $logged_in_cookie . '\|/', '|', '|' . $cookies . '|' );
				$cookies          = trim( $cookies, '|' );
			}

$buffer .= '$rocket_' . $option . ' = \'' . $cookies . "';\n";
		}

if ( 'cache_reject_ua' === $option ) {
			$buffer .= '$rocket_' . $option . ' = \'' . get_rocket_cache_reject_ua() . "';\n";
		}
	}

$buffer .= '$rocket_cache_ignored_parameters = ' . call_user_func( 'var_export', rocket_get_ignored_parameters(), true ) . ";\n";
	$buffer .= '$rocket_cache_mandatory_cookies = ' . call_user_func( 'var_export', get_rocket_cache_mandatory_cookies(), true ) . ";\n";

$buffer .= '$rocket_cache_dynamic_cookies = ' . call_user_func( 'var_export', get_rocket_cache_dynamic_cookies(), true ) . ";\n";

$buffer .= '$rocket_permalink_structure = \'' . wp_slash( get_option( 'permalink_structure' ) ) . "';\n";

/** This filter is documented in inc/front/htaccess.php */
	if ( apply_filters( 'rocket_url_no_dots', false ) ) {
		$buffer .= '$rocket_url_no_dots = 1;';
	}

$config_files_path = [];
	$urls              = [ rocket_get_home_url() ];

// Check if a translation plugin is activated and this configuration is in subdomain.
	$subdomains = get_rocket_i18n_subdomains();

if ( $subdomains ) {
		$urls = $subdomains;
	}

foreach ( $urls as $url ) {
		$file                = get_rocket_parse_url( untrailingslashit( $url ) );
		$file['path']        = ( ! empty( $file['path'] ) ) ? str_replace( '/', '.', untrailingslashit( $file['path'] ) ) : '';
		$config_files_path[] = WP_ROCKET_CONFIG_PATH . strtolower( $file['host'] ) . $file['path'] . '.php';
	}

/**
	 * Filter all config files path
	 *
	 * @since 2.6.5
	 *
	 * @param array $config_files_path  Path of all config files.
	*/
	$config_files_path = apply_filters( 'rocket_config_files_path', $config_files_path );

/**
	 * Filter the content of all config files
	 *
	 * @since 2.1
	 *
	 * @param string $buffer The content that will be printed.
	 * @param array $config_files_path  Names of all config files.
	*/
	$buffer = apply_filters( 'rocket_config_file', $buffer, $config_files_path );
	$buffer = preg_replace( '@array\s+$@i', 'array(', $buffer );
	$buffer = preg_replace( '@array\(\s+$@i', 'array()', $buffer );

return [ $config_files_path, $buffer ];
}

/**
 * Create the current config domain file
 * For example, if home_url() return example.com, the config domain file will be in /config/example.com
 *
 * @since 2.0
 *
 * @return void
 */
function rocket_generate_config_file() {
	list( $config_files_path, $buffer ) = get_rocket_config_file();

if ( count( $config_files_path ) ) {
		rocket_init_config_dir();

foreach ( $config_files_path as $file ) {
			rocket_put_content( $file, $buffer );
		}
	}
}

/**
 * Remove the current config domain file
 *
 * @since 2.6
 *
 * @return void
 */
function rocket_delete_config_file() {
	list( $config_files_path ) = get_rocket_config_file();
	foreach ( $config_files_path as $config_file ) {
		rocket_direct_filesystem()->delete( $config_file );
	}

// Bail out if WP Rocket is multisite.
	if ( is_multisite() ) {
		return;
	}

try {
		$config_dir = new FilesystemIterator( (string) rocket_get_constant( 'WP_ROCKET_CONFIG_PATH' ) );
	} catch ( Exception $e ) {
		return;
	}

// Remove all files with php extension in the config folder.
	foreach ( $config_dir as $file ) {
		if ( ! $file->isFile() || 'php' !== strtolower( $file->getExtension() ) ) {
			continue;
		}

if ( 1 === substr_count( $file->getFilename(), '.' ) ) {
			continue;
		}

if ( false === strpos( rocket_direct_filesystem()->get_contents( $file->getPathname() ), '$rocket_cookie_hash' ) ) {
			continue;
		}

rocket_direct_filesystem()->delete( $file->getPathname() );
	}
}

/**
 * Create all cache folders (wp-rocket & min)
 *
 * @since 2.6
 *
 * @return void
 */
function rocket_init_cache_dir() {
	global $is_apache;

$filesystem = rocket_direct_filesystem();

// Create cache folder if not exist.
	if ( ! $filesystem->is_dir( WP_ROCKET_CACHE_PATH ) ) {
		rocket_mkdir_p( WP_ROCKET_CACHE_PATH );
	}

if ( ! $filesystem->is_file( WP_ROCKET_CACHE_PATH . 'index.html' ) ) {
		$filesystem->touch( WP_ROCKET_CACHE_PATH . 'index.html' );
	}

if ( $is_apache ) {
		$htaccess_path = WP_ROCKET_CACHE_PATH . '.htaccess';

if ( ! $filesystem->is_file( $htaccess_path ) ) {
			$filesystem->touch( $htaccess_path );
			rocket_put_content( $htaccess_path, "<IfModule mod_autoindex.c>\nOptions -Indexes\n</IfModule>" );
		}
	}

// Create minify cache folder if not exist.
	if ( ! $filesystem->is_dir( WP_ROCKET_MINIFY_CACHE_PATH ) ) {
		rocket_mkdir_p( WP_ROCKET_MINIFY_CACHE_PATH );
	}

if ( ! $filesystem->is_file( WP_ROCKET_MINIFY_CACHE_PATH . 'index.html' ) ) {
		$filesystem->touch( WP_ROCKET_MINIFY_CACHE_PATH . 'index.html' );
	}

// Create busting cache folder if not exist.
	if ( ! $filesystem->is_dir( WP_ROCKET_CACHE_BUSTING_PATH ) ) {
		rocket_mkdir_p( WP_ROCKET_CACHE_BUSTING_PATH );
	}

if ( ! $filesystem->is_file( WP_ROCKET_CACHE_BUSTING_PATH . 'index.html' ) ) {
		$filesystem->touch( WP_ROCKET_CACHE_BUSTING_PATH . 'index.html' );
	}

// Create critical CSS folder if not exist.
	if ( ! $filesystem->is_dir( WP_ROCKET_CRITICAL_CSS_PATH ) ) {
		rocket_mkdir_p( WP_ROCKET_CRITICAL_CSS_PATH );
	}

if ( ! $filesystem->is_file( WP_ROCKET_CRITICAL_CSS_PATH . 'index.html' ) ) {
		$filesystem->touch( WP_ROCKET_CRITICAL_CSS_PATH . 'index.html' );
	}
}

/**
 * Create the config folder (wp-rocket-config)
 *
 * @since 2.6
 *
 * @return void
 */
function rocket_init_config_dir() {
	$filesystem = rocket_direct_filesystem();

// Create config domain folder if not exist.
	if ( ! $filesystem->is_dir( WP_ROCKET_CONFIG_PATH ) ) {
		rocket_mkdir_p( WP_ROCKET_CONFIG_PATH );
	}

// Initialize the config directory with index.html to prevent indexing.
	if ( ! $filesystem->is_file( WP_ROCKET_CONFIG_PATH . 'index.html' ) ) {
		$filesystem->touch( WP_ROCKET_CONFIG_PATH . 'index.html' );
	}
}

/**
 * Delete all minify cache files.
 *
 * @since 3.5.3 Replaces glob.
 * @since 2.1
 *
 * @param string|array $extensions Optional. File extensions to minify. Default: js and css.
 */
function rocket_clean_minify( $extensions = [ 'js', 'css' ] ) {
	// Bails out if there are no extensions to target.
	if ( empty( $extensions ) ) {
		return;
	}

if ( is_string( $extensions ) ) {
		$extensions = (array) $extensions;
	}

$min_cache_path = rocket_get_constant( 'WP_ROCKET_MINIFY_CACHE_PATH' );
	$min_path       = $min_cache_path . get_current_blog_id() . '/';
	$iterator       = _rocket_get_cache_path_iterator( $min_path );

if ( false === $iterator ) {
		return;
	}

$filesystem     = rocket_direct_filesystem();
	$min_path_regex = str_replace( '/', '\/', $min_path );

foreach ( $extensions as $ext ) {
		/**
		 * Fires before the minify cache files are deleted.
		 *
		 * @since 2.1
		 *
		 * @param string $ext File extensions to minify.
		 */
		do_action( 'before_rocket_clean_minify', $ext ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

try {
			$entries = new RegexIterator( $iterator, "/{$min_path_regex}.*\.{$ext}/" );
		} catch ( Exception $e ) {
			return;
		}

foreach ( $entries as $entry ) {
			$filesystem->delete( $entry->getPathname() );
		}

/**
		 * Fires after the minify cache files was deleted.
		 *
		 * @since 2.1
		 *
		 * @param string $ext File extensions to minify.
		 */
		do_action( 'after_rocket_clean_minify', $ext ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
	}

// Delete any directories.
	foreach ( $iterator as $item ) {
		if ( $filesystem->is_dir( $item ) ) {
			$filesystem->delete( $item );
		}
	}

// Clean the cache/min/3rd-party items.
	try {
		$files = new FilesystemIterator( "{$min_cache_path}3rd-party" );

foreach ( $files as $file ) {
			if ( $filesystem->is_file( $file ) ) {
				$filesystem->delete( $file );
			}
		}
	} catch ( UnexpectedValueException $e ) {
		// No logging yet.
		return;
	}
}

/**
 * Delete all cache busting files.
 *
 * @since 2.9
 *
 * @param  string|array $extensions (default: array('js','css') File extensions to clean.
 * @return void
 */
function rocket_clean_cache_busting( $extensions = [ 'js', 'css' ] ) {
	if ( empty( $extensions ) ) {
		return;
	}

if ( is_string( $extensions ) ) {
		$extensions = (array) $extensions;
	}

$cache_busting_path = rocket_get_constant( 'WP_ROCKET_CACHE_BUSTING_PATH' ) . get_current_blog_id() . '/';
	$iterator           = _rocket_get_cache_path_iterator( $cache_busting_path );

if ( false === $iterator ) {
		return;
	}

$filesystem         = rocket_direct_filesystem();
	$busting_path_regex = str_replace( '/', '\/', $cache_busting_path );

if ( ! rocket_direct_filesystem()->is_dir( $cache_busting_path ) ) {
		rocket_mkdir_p( $cache_busting_path );

Logger::debug(
			'No Cache Busting folder found.',
			[
				'mkdir cache busting folder',
				'cache_busting_path' => $cache_busting_path,
			]
		);

return;
	}

foreach ( $extensions as $ext ) {
		/**
		 * Fires before the cache busting files are deleted
		 *
		 * @since 2.9
		 *
		 * @param string $ext File extensions to clean.
		*/
		do_action( 'before_rocket_clean_busting', $ext ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

try {
			$entries = new RegexIterator( $iterator, "/{$busting_path_regex}.*\.{$ext}/" );
		} catch ( Exception $e ) {
			return;
		}

foreach ( $entries as $entry ) {
			$filesystem->delete( $entry->getPathname() );
		}

/**
		 * Fires after the cache busting files was deleted
		 *
		 * @since 2.9
		 *
		 * @param string $ext File extensions to clean.
		*/
		do_action( 'after_rocket_clean_cache_busting', $ext ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
	}

foreach ( $iterator as $item ) {
		if ( $filesystem->is_dir( $item ) ) {
			$filesystem->delete( $item );
		}
	}
}

/**
 * Returns the right path when the post is trashed.
 *
 * @param array $parsed_url current parsed url.
 * @param int   $post_id      ID from the post.
 *
 * @return array
 */
function rocket_maybe_find_right_trash_url( array $parsed_url, int $post_id ) {

$post = get_post( $post_id );

if ( ! $post || 'trash' !== $post->post_status ) {
		return $parsed_url;
	}

$post->post_status = 'publish';

$permalink = get_permalink( $post );

if ( ! $permalink ) {
		return $parsed_url;
	}

$new_permalink = str_replace( '__trashed', '', $permalink );
	return get_rocket_parse_url( $new_permalink );
}

/**
 * Delete one or several cache files.
 *
 * @since 3.5.5 Optimizes by grabbing root cache dirs once, bailing out when file/dir doesn't exist, & directly
 *        deleting files.
 * @since 3.5.4 Replaces glob and optimizes.
 * @since 2.0   Delete cache files for all users.
 * @since 1.1.0 Add filter rocket_clean_files.
 * @since 1.0
 *
 * @param string|array              $urls       URLs of cache files to be deleted.
 * @param WP_Filesystem_Direct|null $filesystem Optional. Instance of filesystem handler.
 * @param bool                      $run_actions Run actions.
 */
function rocket_clean_files( $urls, $filesystem = null, $run_actions = true ) {
	$urls = (array) $urls;
	if ( empty( $urls ) ) {
		return;
	}

$urls = array_filter( $urls );
	if ( empty( $urls ) ) {
		return;
	}

/** This filter is documented in inc/front/htaccess.php */
	$url_no_dots = (bool) apply_filters( 'rocket_url_no_dots', false );
	$cache_path  = _rocket_get_wp_rocket_cache_path();

if ( empty( $filesystem ) ) {
		$filesystem = rocket_direct_filesystem();
	}

if ( $run_actions ) {
		/**
		 * Fires before all cache files are deleted.
		 *
		 * @since  3.2.2
		 *
		 * @param array $urls The URLs corresponding to the deleted cache files.
		 */
		do_action( 'before_rocket_clean_files', $urls ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
	}

foreach ( $urls as $url ) {
		if ( $run_actions ) {
			/**
			 * Fires before the cache file is deleted.
			 *
			 * @param string $url The URL that the cache file to be deleted.
			 * @since 1.0
			 */
			do_action( 'before_rocket_clean_file', $url ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
		}

if ( $url_no_dots ) {
			$url = str_replace( '.', '_', $url );
		}

$parsed_url = get_rocket_parse_url( $url );

if ( ! empty( $parsed_url['host'] ) ) {
			foreach ( _rocket_get_cache_dirs( $parsed_url['host'], $cache_path ) as $dir ) {
				// Decode url path.
				$url_chunks = explode( '/', $parsed_url['path'] );
				$matches    = preg_grep( '/%/', $url_chunks );

if ( ! empty( $matches ) ) {
					$parsed_url['path'] = rawurldecode( $parsed_url['path'] );
				}

// Encode Non-latin characters if found in url path.
				if ( false !== preg_match_all( '/(?<non_latin>[^\x00-\x7F]+)/', $parsed_url['path'], $matches ) ) {
					$cb_encode_non_latin = function( $non_latin ) {
						return strtolower( rawurlencode( $non_latin ) );
					};

$parsed_url['path'] = str_replace( $matches['non_latin'], array_map( $cb_encode_non_latin, $matches['non_latin'] ), $parsed_url['path'] );
				}

$entry = $dir . $parsed_url['path'];

// Skip if the dir/file does not exist.
				if ( ! $filesystem->exists( $entry ) ) {
					continue;
				}

if ( $filesystem->is_dir( $entry ) ) {
					rocket_rrmdir( $entry, [], $filesystem );
				} else {
					$filesystem->delete( $entry );
				}
			}
		}
		if ( $run_actions ) {
			/**
			 * Fires after the cache file is deleted.
			 *
			 * @param string $url The URL that the cache file was deleted.
			 * @since 1.0
			 */
			do_action( 'after_rocket_clean_file', $url ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
		}
	}

if ( ! $run_actions ) {
		return;
	}

/**
	 * Fires after all cache files are deleted.
	 *
	 * @since  3.2.2
	 *
	 * @param array $urls The URLs corresponding to the deleted cache files.
	 */
	do_action( 'after_rocket_clean_files', $urls ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
}

/**
 * Remove the home cache file and pagination
 *
 * $since 2.2 Add $lang argument
 *
 * @since 2.0 Delete cache files for all users
 * @since 1.0
 *
 * @param string $lang (default: '') The language code.
 * @return void
 */
function rocket_clean_home( $lang = '' ) {
	$parse_url = get_rocket_parse_url( get_rocket_i18n_home_url( $lang ) );

/** This filter is documented in inc/front/htaccess.php */
	if ( apply_filters( 'rocket_url_no_dots', false ) ) {
		$parse_url['host'] = str_replace( '.', '_', $parse_url['host'] );
	}

$root = WP_ROCKET_CACHE_PATH . $parse_url['host'] . '*' . untrailingslashit( $parse_url['path'] );

/**
	 * Filter the homepage caching folder root
	 *
	 * @since 2.6.5
	 * @param array     $root The root that will be returned.
	 * @param string    $host The website host.
	 * @param string    $path The website path.
	*/
	$root = apply_filters( 'rocket_clean_home_root', $root, $parse_url['host'], $parse_url['path'] );

/**
	 * Fires before the home cache file is deleted
	 *
	 * @since 1.0
	 *
	 * @param string $root The path of home cache file.
	 * @param string $lang The current lang to purge.
	*/
	do_action( 'before_rocket_clean_home', $root, $lang ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

// Delete homepage.
	$files = glob( $root . '/*', GLOB_NOSORT );

if ( $files ) {
		foreach ( $files as $file ) {
			if ( preg_match( '#/index(?:-.+\.|\.)html(?:_gzip)?$#', $file ) ) {
				rocket_direct_filesystem()->delete( $file );
			}
		}
	}

// Delete homepage pagination.
	$dirs = glob( $root . '*/' . $GLOBALS['wp_rewrite']->pagination_base, GLOB_NOSORT );
	if ( $dirs ) {
		foreach ( $dirs as $dir ) {
			rocket_rrmdir( $dir );
		}
	}

// Remove the hidden empty file for mobile detection on NGINX with the Rocket NGINX configuration.
	$nginx_mobile_detect_files = glob( $root . '/.mobile-active', GLOB_NOSORT );
	if ( $nginx_mobile_detect_files ) {
		foreach ( $nginx_mobile_detect_files as $nginx_mobile_detect_file ) { // no array map to use @.
			rocket_direct_filesystem()->delete( $nginx_mobile_detect_file );
		}
	}

// Remove the hidden empty file for webp.
	$nowebp_detect_files = glob( $root . '/.no-webp', GLOB_NOSORT );
	if ( $nowebp_detect_files ) {
		foreach ( $nowebp_detect_files as $nowebp_detect_file ) { // no array map to use @.
			rocket_direct_filesystem()->delete( $nowebp_detect_file );
		}
	}

/**
	 * Fires after the home cache file was deleted
	 *
	 * @since 1.0
	 *
	 * @param string $root The path of home cache file.
	 * @param string $lang The current lang to purge.
	*/
	do_action( 'after_rocket_clean_home', $root, $lang ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
}

/**
 * Remove the home cache feed
 *
 * @since 2.7
 *
 * @return void
 */
function rocket_clean_home_feeds() {

if ( ! has_filter( 'rocket_cache_reject_uri', 'wp_rocket_cache_feed' ) ) {
		return;
	}

$urls   = [];
	$urls[] = get_feed_link();
	$urls[] = get_feed_link( 'comments_' );

/**
	 * Filter the home feeds urls
	 *
	 * @since 2.7
	 * @param array     $urls The urls of the home feeds.
	*/
	$urls = apply_filters( 'rocket_clean_home_feeds', $urls );

/**
	 * Fires before the home feeds cache is deleted
	 *
	 * @since 2.7
	 *
	 * @param array $urls The urls of the home feeds.
	*/
	do_action( 'before_rocket_clean_home_feeds', $urls ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

rocket_clean_files( $urls );

/**
	 * Fires after the home feeds cache was deleted
	 *
	 * @since 2.7
	 *
	 * @param array $urls The urls of the home feeds.
	*/
	do_action( 'after_rocket_clean_home_feeds', $urls ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
}

/**
 * Remove all cache files for the domain.
 *
 * @since 3.5.5 Optimizes by grabbing root cache dirs once, bailing out when file/dir doesn't exist, & directly
 *        deleting files.
 * @since 3.5.3 Replaces glob with SPL.
 * @since 2.0   Delete domain cache files for all users
 * @since 1.0
 *
 * @param string                    $lang       Optional. The language code. Default: empty string.
 * @param WP_Filesystem_Direct|null $filesystem Optional. Instance of filesystem handler.
 */
function rocket_clean_domain( $lang = '', $filesystem = null ) {
	$urls = ( ! $lang || is_object( $lang ) || is_array( $lang ) || is_int( $lang ) )
		? (array) get_rocket_i18n_uri()
		: (array) get_rocket_i18n_home_url( $lang );

/**
	 * Filter URLs to delete all caching files from a domain.
	 *
	 * @since 2.6.4
	 *
	 * @param array     URLs that will be returned.
	 * @param string    The language code.
	 */
	$urls = (array) apply_filters( 'rocket_clean_domain_urls', $urls, $lang );
	$urls = array_filter( $urls );
	if ( empty( $urls ) ) {
		return false;
	}

/** This filter is documented in inc/front/htaccess.php */
	$url_no_dots      = (bool) apply_filters( 'rocket_url_no_dots', false );
	$cache_path       = _rocket_get_wp_rocket_cache_path();
	$dirs_to_preserve = get_rocket_i18n_to_preserve( $lang, $cache_path );

if ( empty( $filesystem ) ) {
		$filesystem = rocket_direct_filesystem();
	}

foreach ( $urls as $url ) {
		$parsed_url = get_rocket_parse_url( $url );

if ( $url_no_dots ) {
			$parsed_url['host'] = str_replace( '.', '_', $parsed_url['host'] );
		}

$root = $cache_path . $parsed_url['host'] . $parsed_url['path'];

/**
		 * Fires before all cache files are deleted.
		 *
		 * @since 1.0
		 *
		 * @param string $root The path of home cache file.
		 * @param string $lang The current lang to purge.
		 * @param string $url  The home url.
		 */
		do_action( 'before_rocket_clean_domain', $root, $lang, $url ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

foreach ( _rocket_get_cache_dirs( $parsed_url['host'], $cache_path ) as $dir ) {
			$entry = $dir . $parsed_url['path'];
			// Skip if the dir/file does not exist.
			if ( ! $filesystem->exists( $entry ) ) {
				continue;
			}

if ( $filesystem->is_dir( $entry ) ) {
				rocket_rrmdir( $entry, $dirs_to_preserve, $filesystem );
			} else {
				$filesystem->delete( $entry );
			}
		}

/**
		 * Fires after all cache files was deleted.
		 *
		 * @since 1.0
		 *
		 * @param string $root The path of home cache file.
		 * @param string $lang The current lang to purge.
		 * @param string $url  The home url.
		 */
		do_action( 'after_rocket_clean_domain', $root, $lang, $url ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
	}

return true;
}

/**
 * Delete the caching files of a specific term.
 *
 * $since 2.6.8
 *
 * @param  int    $term_id       The term ID.
 * @param  string $taxonomy_slug The taxonomy slug.
 * @return void
 */
function rocket_clean_term( $term_id, $taxonomy_slug ) {
	$purge_urls = [];

// Get all term infos.
	$term = get_term_by( 'id', $term_id, $taxonomy_slug );

// Get the term language.
	$i18n_plugin = rocket_has_i18n();

if ( 'wpml' === $i18n_plugin && ! rocket_is_plugin_active( 'woocommerce-multilingual/wpml-woocommerce.php' ) ) {
		// WPML.
		$lang = $GLOBALS['sitepress']->get_language_for_element( $term_id, 'tax_' . $taxonomy_slug );
	} elseif ( 'polylang' === $i18n_plugin ) {
		// Polylang.
		$lang = pll_get_term_language( $term_id );
	} else {
		$lang = false;
	}

// Get permalink.
	$permalink = get_term_link( $term, $taxonomy_slug );

// Add permalink.
	if ( '/' !== rocket_extract_url_component( $permalink, PHP_URL_PATH ) ) {
		array_push( $purge_urls, $permalink );
	}

/**
	 * Fires before deleted caching files related with the term
	 *
	 * @since 2.6.8
	 * @param obj    $term       The term object.
	 * @param array  $purge_urls URLs cache files to remove.
	 * @param string $lang       The term language.
	*/
	do_action( 'before_rocket_clean_term', $term, $purge_urls, $lang ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

/**
	 * Filter URLs cache files to remove
	 *
	 * @since 2.6.8
	 * @param array $purge_urls List of URLs cache files to remove.
	 * @param obj   $term       The term object.
	*/
	$purge_urls = apply_filters( 'rocket_term_purge_urls', $purge_urls, $term );

// Purge all files.
	rocket_clean_files( $purge_urls );

// Never forget to purge homepage and their pagination.
	rocket_clean_home( $lang );

/**
	 * Fires before deleted caching files related with the term
	 *
	 * @since 2.6.8
	 * @param obj    $term       The term object.
	 * @param array  $purge_urls URLs cache files to remove.
	 * @param string $lang       The term language.
	*/
	do_action( 'after_rocket_clean_term', $term, $purge_urls, $lang ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
}

/**
 * Delete the caching files of a specific user
 *
 * $since 2.6.12
 *
 * @param int    $user_id  The user ID.
 * @param string $lang     The language code.
 * @return void
 */
function rocket_clean_user( $user_id, $lang = '' ) {
	$urls = ( ! $lang || is_object( $lang ) ) ? get_rocket_i18n_uri() : get_rocket_i18n_home_url( $lang );
	$urls = (array) $urls;

/** This filter is documented in inc/functions/files.php */
	$urls = apply_filters( 'rocket_clean_domain_urls', $urls, $lang );
	$urls = array_filter( $urls );
	$user = get_user_by( 'id', $user_id );

if ( ! $user ) {
		return;
	}

$user_key = rawurlencode( $user->user_login ) . '-' . get_rocket_option( 'secret_cache_key' );

foreach ( $urls as $url ) {
		$parse_url = get_rocket_parse_url( $url );

/** This filter is documented in inc/front/htaccess.php */
		if ( apply_filters( 'rocket_url_no_dots', false ) ) {
			$parse_url['host'] = str_replace( '.', '_', $parse_url['host'] );
		}

$cache_dir = $parse_url['host'] . '-' . strtolower( $user_key );
		$cache_dir = $cache_dir . $parse_url['path'];
		$root      = rocket_get_constant( 'WP_ROCKET_CACHE_PATH' ) . $cache_dir;

/**
		 * Fires before all caching files are deleted for a specific user
		 *
		 * @since 2.6.12
		 *
		 * @param int     $user_id  The path of home cache file.
		 * @param string  $lang     The language code.
		*/
		do_action( 'before_rocket_clean_user', $user_id, $lang ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

// Delete cache domain files.
		$dirs = glob( $root . '*', GLOB_NOSORT );
		if ( $dirs ) {
			foreach ( $dirs as $dir ) {
				rocket_rrmdir( $dir, get_rocket_i18n_to_preserve( $lang ) );
			}
		}

/**
		 * Fires after all caching files are deleted for a specific user
		 *
		 * @since 2.6.12
		 *
		 * @param int     $user_id  The path of home cache file.
		 * @param string  $lang     The language code.
		*/
		do_action( 'after_rocket_clean_user', $user_id, $lang ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
	}
}

/**
 * Remove all caching files in the cache folder
 *
 * @since 2.6.8
 *
 * @return void
 */
function rocket_clean_cache_dir() {
	/**
	 * Fires before deleting all caching files in the cache folder
	 *
	 * @since 2.6.8
	*/
	do_action( 'before_rocket_clean_cache_dir' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

// Delete all caching files.
	$dirs = glob( WP_ROCKET_CACHE_PATH . '*', GLOB_NOSORT );
	if ( $dirs ) {
		foreach ( $dirs as $dir ) {
			rocket_rrmdir( $dir );
		}
	}

/**
	 * Fires after deleting all caching files in the cache folder
	 *
	 * @since 2.6.8
	*/
	do_action( 'after_rocket_clean_cache_dir' ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
}

/**
 * Remove a single file or a folder recursively.
 *
 * @since 3.5.3 Replaces glob and optimizes.
 * @since 1.0
 * @since 3.5.3 Bails if given dir should be preserved; replaces glob; optimizes.
 *
 * @param string                    $dir              File/Directory to delete.
 * @param array                     $dirs_to_preserve Optional. Dirs that should not be deleted.
 * @param WP_Filesystem_Direct|null $filesystem       Optional. Instance of filesystem handler.
 */
function rocket_rrmdir( $dir, array $dirs_to_preserve = [], $filesystem = null ) {
	$dir = untrailingslashit( $dir );

if ( empty( $filesystem ) ) {
		$filesystem = rocket_direct_filesystem();
	}

/**
	 * Fires before a file/directory cache is deleted
	 *
	 * @since 1.1.0
	 *
	 * @param string $dir              File/Directory to delete.
	 * @param array  $dirs_to_preserve Directories that should not be deleted.
	 */
	do_action( 'before_rocket_rrmdir', $dir, $dirs_to_preserve ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals

// Remove the hidden empty file for mobile detection on NGINX with the Rocket NGINX configuration.
	$nginx_mobile_detect_file = $dir . '/.mobile-active';

if ( $filesystem->is_dir( $dir ) && $filesystem->exists( $nginx_mobile_detect_file ) ) {
		$filesystem->delete( $nginx_mobile_detect_file );
	}

// Remove the hidden empty file for webp.
	$nowebp_detect_file = $dir . '/.no-webp';

if ( $filesystem->is_dir( $dir ) && $filesystem->exists( $nowebp_detect_file ) ) {
		$filesystem->delete( $nowebp_detect_file );
	}

if ( ! $filesystem->is_dir( $dir ) ) {
		$filesystem->delete( $dir );

return;
	}

// Get the directory entries.
	$entries = [];
	try {
		foreach ( new FilesystemIterator( $dir ) as $entry ) {
			$entries[] = $entry->getPathname();
		}
	} catch ( Exception $e ) { // phpcs:disable Generic.CodeAnalysis.EmptyStatement.DetectedCatch
		// No action required, as logging not enabled.
	}

// Exclude directories to preserve from the entries.
	if ( ! empty( $dirs_to_preserve ) && ! empty( $entries ) ) {
		$keys = [];
		foreach ( $dirs_to_preserve as $dir_to_preserve ) {
			$matches = preg_grep( "#^$dir_to_preserve$#", $entries );
			$keys[]  = reset( $matches );
		}

if ( ! empty( $keys ) ) {
			$keys = array_filter( $keys );
			if ( ! empty( $keys ) ) {
				$entries = array_diff( $entries, $keys );
			}
		}
	}

foreach ( $entries as $entry ) {
		// If not a directory, delete it.
		if ( ! $filesystem->is_dir( $entry ) ) {
			$filesystem->delete( $entry );
		} else {
			rocket_rrmdir( $entry, $dirs_to_preserve, $filesystem );
		}
	}

$filesystem->delete( $dir );

/**
	 * Fires after a file/directory cache was deleted
	 *
	 * @since 1.1.0
	 *
	 * @param string $dir              File/Directory to delete.
	 * @param array  $dirs_to_preserve Dirs that should not be deleted.
	 */
	do_action( 'after_rocket_rrmdir', $dir, $dirs_to_preserve ); // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals
}

/**
 * Instanciate the filesystem class
 *
 * @since 2.10
 *
 * @return WP_Filesystem_Direct WP_Filesystem_Direct instance
 */
function rocket_direct_filesystem() {
	require_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php';
	require_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-direct.php';
	return new WP_Filesystem_Direct( new StdClass() );
}

/**
 * Directory creation based on WordPress Filesystem
 *
 * @since 1.3.4
 *
 * @param string $dir The path of directory will be created.
 * @return bool
 */
function rocket_mkdir( $dir ) {
	$chmod = rocket_get_filesystem_perms( 'dir' );
	return rocket_direct_filesystem()->mkdir( $dir, $chmod );
}

/**
 * Recursive directory creation based on full path.
 *
 * @since 1.3.4
 *
 * @source wp_mkdir_p() in /wp-includes/functions.php
 *
 * @param string $target path to the directory we want to create.
 * @return bool True if directory is created/exists, false otherwise
 */
function rocket_mkdir_p( $target ) {
	$wrapper = null;

if ( rocket_is_stream( $target ) ) {
		list( $wrapper, $target ) = explode( '://', $target, 2 );
	}

// from php.net/mkdir user contributed notes.
	$target = str_replace( '//', '/', $target );

// Put the wrapper back on the target.
	if ( null !== $wrapper ) {
		$target = $wrapper . '://' . $target;
	}

// safe mode fails with a trailing slash under certain PHP versions.
	$target = rtrim( $target, '/\\' );
	if ( empty( $target ) ) {
		$target = '/';
	}

if ( rocket_direct_filesystem()->exists( $target ) ) {
		return rocket_direct_filesystem()->is_dir( $target );
	}

// Attempting to create the directory may clutter up our display.
	if ( rocket_mkdir( $target ) ) {
		return true;
	} elseif ( rocket_direct_filesystem()->is_dir( dirname( $target ) ) ) {
		return false;
	}

// If the above failed, attempt to create the parent node, then try again.
	if ( ( '/' !== $target ) && ( rocket_mkdir_p( dirname( $target ) ) ) ) {
		return rocket_mkdir_p( $target );
	}

return false;
}

/**
 * Test if a given path is a stream URL.
 *
 * @since 3.5.3
 *
 * @source wp_is_stream() in /wp-includes/functions.php
 *
 * @param string $path The resource path or URL.
 *
 * @return bool true if the path is a stream URL; else false.
 */
function rocket_is_stream( $path ) {
	$scheme_separator = strpos( $path, '://' );

if ( false === $scheme_separator ) {
		// $path isn't a stream.
		return false;
	}

$stream = substr( $path, 0, $scheme_separator );

return in_array( $stream, stream_get_wrappers(), true );
}

/**
 * File creation based on WordPress Filesystem.
 *
 * @since 1.3.5
 *
 * @param string $file    The path of file will be created.
 * @param string $content The content that will be printed in advanced-cache.php.
 *
 * @return bool true on success; else, false on failure.
 */
function rocket_put_content( $file, $content ) {
	$chmod = rocket_get_filesystem_perms( 'file' );
	return rocket_direct_filesystem()->put_contents( $file, $content, $chmod );
}

/**
 * Get the permissions to apply to files and folders.
 *
 * Reminder:
 * `$perm = fileperms( $file );`
 *
 *  WHAT                                         | TYPE   | FILE   | FOLDER |
 * ----------------------------------------------+--------+--------+--------|
 * `$perm`                                       | int    | 33188  | 16877  |
 * `substr( decoct( $perm ), -4 )`               | string | '0644' | '0755' |
 * `substr( sprintf( '%o', $perm ), -4 )`        | string | '0644' | '0755' |
 * `$perm & 0777`                                | int    | 420    | 493    |
 * `decoct( $perm & 0777 )`                      | string | '644'  | '755'  |
 * `substr( sprintf( '%o', $perm & 0777 ), -4 )` | string | '644'  | '755'  |
 *
 * @since  3.2.4
 *
 * @param  string $type The type: 'dir' or 'file'.
 *
 * @return int          Octal integer.
 */
function rocket_get_filesystem_perms( $type ) {
	static $perms = [];

if ( rocket_get_constant( 'WP_ROCKET_IS_TESTING', false ) ) {
		$perms = [];
	}

// Allow variants.
	switch ( $type ) {
		case 'dir':
		case 'dirs':
		case 'folder':
		case 'folders':
			$type = 'dir';
			break;

case 'file':
		case 'files':
			$type = 'file';
			break;

default:
			return 0755;
	}

if ( isset( $perms[ $type ] ) ) {
		return $perms[ $type ];
	}

// If the constants are not defined, use fileperms() like WordPress does.
	if ( 'dir' === $type ) {
		$fs_chmod_dir   = (int) rocket_get_constant( 'FS_CHMOD_DIR', 0 );
		$perms[ $type ] = $fs_chmod_dir > 0
			? $fs_chmod_dir
			: fileperms( rocket_get_constant( 'ABSPATH' ) ) & 0777 | 0755;
	} else {
		$fs_chmod_file  = (int) rocket_get_constant( 'FS_CHMOD_FILE', 0 );
		$perms[ $type ] = $fs_chmod_file > 0
			? $fs_chmod_file
			: fileperms( rocket_get_constant( 'ABSPATH' ) . 'index.php' ) & 0777 | 0644;
	}

return $perms[ $type ];
}

/**
 * Gets Directory files matches regex.
 *
 * @since 3.6.3
 * @access private
 *
 * @param string $dir   Directory to search for files inside it.
 * @param string $regex Regular expression for files need to be searched for.
 *
 * @return array|RegexIterator List of files matches this regular expression.
 */
function _rocket_get_dir_files_by_regex( $dir, $regex ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	try {
		$iterator = new IteratorIterator(
			new FilesystemIterator( $dir )
		);

return new RegexIterator( $iterator, $regex );
	} catch ( Exception $e ) {
		return [];
	}

}

/**
 * Get the recursive iterator for the cache path.
 *
 * @since  3.5.4
 * @access private
 *
 * @param string $cache_path Path to the cache directory.
 *
 * @return bool|RecursiveIteratorIterator Iterator on success; else false;
 */
function _rocket_get_cache_path_iterator( $cache_path ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	try {
		return new RecursiveIteratorIterator(
			new RecursiveDirectoryIterator( $cache_path ),
			RecursiveIteratorIterator::SELF_FIRST,
			RecursiveIteratorIterator::CATCH_GET_CHILD
		);
	} catch ( Exception $e ) {
		// No logging yet.
		return false;
	}
}

/**
 * Gets the directories for the given URL host from the cache/wp-rocket/ directory or stored memory.
 *
 * @since  3.5.5
 * @access private
 *
 * @param string $url_host   The URL's host.
 * @param string $cache_path Cache's path, e.g. cache/wp-rocket/.
 * @param bool   $hard_reset Optional. When true, resets the static domain directories array and bails out.
 *
 * @return array
 */
function _rocket_get_cache_dirs( $url_host, $cache_path = '', $hard_reset = false ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	static $domain_dirs = [];

if ( true === $hard_reset ) {
		$domain_dirs = [];

return;
	}

if ( isset( $domain_dirs[ $url_host ] ) ) {
		return $domain_dirs[ $url_host ];
	}

if ( empty( $cache_path ) ) {
		$cache_path = _rocket_get_wp_rocket_cache_path();
	}

try {
		$iterator = new IteratorIterator(
			new FilesystemIterator( $cache_path )
		);
	} catch ( Exception $e ) {
		return [];
	}

$regex = sprintf(
		'/%1$s%2$s(.*)/i',
		_rocket_normalize_path( $cache_path, true ),
		$url_host
	);

try {
		$entries = new RegexIterator( $iterator, $regex );
	} catch ( Exception $e ) {
		return [];
	}

$domain_dirs[ $url_host ] = [];
	foreach ( $entries as $entry ) {
		$domain_dirs[ $url_host ][] = $entry->getPathname();
	}

return $domain_dirs[ $url_host ];
}

/**
 * Normalizes the given filesystem path:
 *  - Windows/IIS-based servers: converts all directory separators to "\\" or, when escaping, to "\\\\".
 *  - Linux-based servers: if $forced is true, uses wp_normalize_path(); else, returns the original path.
 *
 * @since  3.5.5
 * @access private
 *
 * @param string $path   Filesystem path (file or directory) to normalize.
 * @param bool   $escape Optional. When true, escapes the directory separator(s).
 * @param bool   $force  Optional. When true, forces normalizing off non-Windows' paths.
 *
 * @return string
 */
function _rocket_normalize_path( $path, $escape = false, $force = false ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	if ( _rocket_is_windows_fs( $path ) ) {
		$path = str_replace( '/', '\\', $path );

return $escape
			? str_replace( '\\', '\\\\', $path )
			: $path;
	}

if ( $escape ) {
		return str_replace( '/', '\/', $path );
	}

if ( ! $force ) {
		return $path;
	}

return wp_normalize_path( $path );
}

/**
 * Checks if the filesystem (fs) is for Windows/IIS server.
 *
 * @since  3.5.5
 * @access private
 *
 * @param bool $hard_reset Optional. When true, resets the memoization.
 *
 * @return bool
 */
function _rocket_is_windows_fs( $hard_reset = false ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	static $is_windows = null;

if ( $hard_reset ) {
		$is_windows = null;
	}

if ( is_null( $is_windows ) ) {
		$is_windows = (
			DIRECTORY_SEPARATOR === '\\'
			&&
			! rocket_get_constant( 'WP_ROCKET_RUNNING_VFS', false )
		);
	}

return $is_windows;
}

/**
 * Gets the normalized cache path, i.e. normalizes constant "WP_ROCKET_CACHE_PATH".
 *
 * @since  3.5.5
 * @access private
 *
 * @return string
 */
function _rocket_get_wp_rocket_cache_path() { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	return _rocket_normalize_path( rocket_get_constant( 'WP_ROCKET_CACHE_PATH' ) );
}

/**
 * Gets .php files in a directory as an array of SplFileInfo objects.
 *
 * @since 3.6.3
 *
 * @param string $dir_path Directory to check.
 *
 * @return array .php files in the directory. [...SplFileInfo]
 */
function _rocket_get_php_files_in_dir( $dir_path ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	try {
		$config_dir = new FilesystemIterator( (string) $dir_path );
	} catch ( Exception $e ) {
		return [];
	}
	$files = [];

foreach ( $config_dir as $file ) {
		if ( $file->isFile() && 'php' === $file->getExtension() ) {
			$files[] = $file;
		}
	}

return $files;
}

/**
 * Get recursive files matched by regex.
 *
 * @since 3.6.3
 *
 * @param string $regex Regular Expression to be applied.
 *
 * @return array|RegexIterator List of files which match the regular expression (SplFileInfo).
 */
function _rocket_get_recursive_dir_files_by_regex( $regex ) { // phpcs:ignore WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound
	try {
		$cache_path = _rocket_get_wp_rocket_cache_path();
		$iterator   = new RecursiveIteratorIterator(
			new RecursiveDirectoryIterator( $cache_path, FilesystemIterator::SKIP_DOTS )
		);
		return new RegexIterator( $iterator, $regex, RecursiveRegexIterator::MATCH );
	} catch ( Exception $e ) {
		return [];
	}
}

cmd: