Changeset 38849 for trunk/src/wp-includes/functions.php

Timestamp:

10/21/2016 02:53:19 AM (9 years ago)

Author:

jorbin

Message:

Cache API: introduce wp_cache_get_last_changed to improve DRY

One thing fairly common to the cache groups is a block of code to look to see when the cache was last changed, and if there isn't one, to set it for the current microtime(). It appears in 8 different places in core. This adds a new helper wp_cache_get_last_changed to DRY things up a bit.

Since wp-includes/cache.php isn't guaranteed to be loaded, this new function is in wp-includes/functions.php

Props spacedmonkey, desrosj.
Fixes #37464.

File:

• trunk/src/wp-includes/functions.php (modified) (1 diff)

trunk/src/wp-includes/functions.php

@@ -5554 +5554 @@
     );
 }
+
+/**
+ * Get last changed date for the specified cache group.
+ *
+ * @since 4.7.0
+ *
+ * @param $group Where the cache contents are grouped.
+ *
+ * @return string $last_changed UNIX timestamp with microseconds representing when the group was last changed.
+ */
+function wp_cache_get_last_changed( $group ) {
+    $last_changed = wp_cache_get( 'last_changed', $group );
+
+    if ( ! $last_changed ) {
+        $last_changed = microtime();
+        wp_cache_set( 'last_changed', $last_changed, $group );
+    }
+
+    return $last_changed;
+}