Changeset 29915 for trunk/src/wp-includes/functions.php

Timestamp:

10/16/2014 04:44:13 AM (11 years ago)

Author:

wonderboymusic

Message:

Cache get_term_by() calls:

• Add a helper function, wp_get_last_changed(), to retrieve a last-modified timestamp by cache group
• When caching a term, also make cache entries for slug and name via slug:{$term_id} and name:{$term_id} keys in the $taxonomy:$last_changed bucket that reference the term_id
• In clean_term_cache() and update_term_cache(), respect $_wp_suspend_cache_invalidation
• Original term cache entries maintain BC

Adds unit tests.

Props wonderboymusic, tollmanz, boonebgorges.
Fixes #21760.

File:

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

trunk/src/wp-includes/functions.php

@@ -4630 +4630 @@
     return (bool) $var;
 }
+
+/**
+ * Helper function to retrieve an incrementer identified by $group
+ *
+ * @since 4.1.0
+ *
+ * @param string $group The cache group for the incrementer.
+ * @param bool $force Whether or not to generate a new incrementor.
+ * @return int The timestamp representing 'last_changed'.
+ */
+function wp_get_last_changed( $group, $force = false ) {
+    $last_changed = wp_cache_get( 'last_changed', $group );
+    if ( ! $last_changed || true === $force ) {
+        $last_changed = microtime();
+        wp_cache_set( 'last_changed', $last_changed, $group );
+    }
+    return $last_changed;
+}