DiskCache: tweak how expiration is invoked

2 files changed, 3 insertions, 2 deletions

diff --git a/classes/cache/adapter.php b/classes/cache/adapter.php
index a61e5cb83..514a14685 100644
--- a/classes/cache/adapter.php
+++ b/classes/cache/adapter.php
@@ -9,7 +9,6 @@ interface Cache_Adapter {
 	 * @return int|false -1 if the file doesn't exist, false if an error occurred, size in bytes otherwise
 	 */
 	public function get_size(string $filename);
-
 	/**
 	 * @return int|false -1 if the file doesn't exist, false if an error occurred, timestamp otherwise
 	 */
@@ -30,5 +29,7 @@ interface Cache_Adapter {
 	 * @return bool|int false if the file doesn't exist (or unreadable) or isn't audio/video, true if a plugin handled, otherwise int of bytes sent
 	 */
 	public function send(string $filename);
+
+	/** Catchall function to expire all subfolders/prefixes in the cache, invoked on the backend */
 	public function expire_all(): void;
 }
diff --git a/classes/cache/local.php b/classes/cache/local.php
index 62f33662a..fb8aed529 100644
--- a/classes/cache/local.php
+++ b/classes/cache/local.php
@@ -94,7 +94,7 @@ class Cache_Local implements Cache_Adapter {
 
 				if ($files) {
 					foreach ($files as $file) {
-						if (time() - filemtime($file) > 86400*Config::get(Config::CACHE_MAX_DAYS)) {
+						if (time() - filemtime($file) > 86400 * Config::get(Config::CACHE_MAX_DAYS)) {
 							unlink($file);
 
 							++$num_deleted;