Ticket #17455: 17455.4.diff

src/wp-includes/post-functions.php

@@ -5227 +5227 @@
  * 'gmt' is when the last post was posted in GMT formatted date.
  *
  * @since 0.71
+ * @since 4.4.0 The `$post_type` argument was added.
  *
- * @param string $timezone The location to get the time. Accepts 'gmt', 'blog',
- *                         or 'server'. Default 'server'.
+ * @param string $timezone  Optional. The location to get the time. Accepts 'gmt', 'blog',
+ *                          or 'server'. Default 'server'.
+ * @param string $post_type Optional. The post type to check. Default 'any'.
  * @return string The date of the last post.
  */
-function get_lastpostdate( $timezone = 'server' ) {
+function get_lastpostdate( $timezone = 'server', $post_type = 'any' ) {
         /**
          * Filter the date the last post was published.
          *
@@ -5242 +5244 @@
          *                         'blog', or 'server'.
          * @param string $timezone Location to use for getting the post published date.
          */
-        return apply_filters( 'get_lastpostdate', _get_last_post_time( $timezone, 'date' ), $timezone );
+        return apply_filters( 'get_lastpostdate', _get_last_post_time( $timezone, 'date', $post_type ), $timezone );
 }
 
 /**
@@ -5253 +5255 @@
  * 'gmt' is when the last post was modified in GMT time.
  *
  * @since 1.2.0
+ * @since 4.4.0 The `$post_type` argument was added.
  *
- * @param string $timezone Optional. The timezone for the timestamp. Uses the server's internal timezone.
- *                         Accepts 'server', 'blog', 'gmt'. or 'server'. 'server' uses the server's
- *                         internal timezone. 'blog' uses the `post_modified` field, which proxies
- *                         to the timezone set for the site. 'gmt' uses the `post_modified_gmt` field.
- *                         Default 'server'.
+ * @param string $timezone  Optional. The timezone for the timestamp. Uses the server's internal timezone.
+ *                          Accepts 'server', 'blog', 'gmt'. or 'server'. 'server' uses the server's
+ *                          internal timezone. 'blog' uses the `post_modified` field, which proxies
+ *                          to the timezone set for the site. 'gmt' uses the `post_modified_gmt` field.
+ *                          Default 'server'.
+ * @param string $post_type Optional. The post type to check. Default 'any'.
  * @return string The timestamp.
  */
-function get_lastpostmodified( $timezone = 'server' ) {
-        $lastpostmodified = _get_last_post_time( $timezone, 'modified' );
+function get_lastpostmodified( $timezone = 'server', $post_type = 'any' ) {
+        $lastpostmodified = _get_last_post_time( $timezone, 'modified', $post_type );
 
         $lastpostdate = get_lastpostdate($timezone);
-        if ( $lastpostdate > $lastpostmodified )
+        if ( $lastpostdate > $lastpostmodified ) {
                 $lastpostmodified = $lastpostdate;
+        }
 
         /**
          * Filter the date the last post was modified.
@@ -5284 +5289 @@
  * Get the timestamp of the last time any post was modified or published.
  *
  * @since 3.1.0
+ * @since 4.4.0 The `$post_type` argument was added.
  * @access private
  *
  * @global wpdb $wpdb
  *
- * @param string $timezone The timezone for the timestamp. See {@see get_lastpostmodified()}
- *                         for information on accepted values.
- * @param string $field    Post field to check. Accepts 'date' or 'modified'.
+ * @param string $timezone  The timezone for the timestamp. See {@see get_lastpostmodified()}
+ *                          for information on accepted values.
+ * @param string $field     Post field to check. Accepts 'date' or 'modified'.
+ * @param string $post_type Optional. The post type to check. Default 'any'.
  * @return string|false The timestamp.
  */
-function _get_last_post_time( $timezone, $field ) {
+function _get_last_post_time( $timezone, $field, $post_type = 'any' ) {
         global $wpdb;
 
-        if ( !in_array( $field, array( 'date', 'modified' ) ) )
+        if ( ! in_array( $field, array( 'date', 'modified' ) ) ) {
                 return false;
+        }
 
         $timezone = strtolower( $timezone );
 
         $key = "lastpost{$field}:$timezone";
+        if ( 'any' !== $post_type ) {
+                $key .= ':' . sanitize_key( $post_type );
+        }
 
         $date = wp_cache_get( $key, 'timeinfo' );
 
         if ( !$date ) {
-                $add_seconds_server = date('Z');
+                if ( 'any' === $post_type ) {
+                        $post_types = get_post_types( array( 'public' => true ) );
+                        array_walk( $post_types, array( $wpdb, 'escape_by_ref' ) );
+                        $post_types = "'" . implode( "', '", $post_types ) . "'";
+                } else {
+                        $post_types = "'" . sanitize_key( $post_type ) . "'";
+                }
 
-                $post_types = get_post_types( array( 'public' => true ) );
-                array_walk( $post_types, array( &$wpdb, 'escape_by_ref' ) );
-                $post_types = "'" . implode( "', '", $post_types ) . "'";
-
                 switch ( $timezone ) {
                         case 'gmt':
                                 $date = $wpdb->get_var("SELECT post_{$field}_gmt FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
@@ -5320 +5333 @@
                                 $date = $wpdb->get_var("SELECT post_{$field} FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
                                 break;
                         case 'server':
+                                $add_seconds_server = date( 'Z' );
                                 $date = $wpdb->get_var("SELECT DATE_ADD(post_{$field}_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type IN ({$post_types}) ORDER BY post_{$field}_gmt DESC LIMIT 1");
                                 break;
                 }
 
-                if ( $date )
+                if ( $date ) {
                         wp_cache_set( $key, $date, 'timeinfo' );
+                }
         }
 
         return $date;
@@ -5548 +5563 @@
                 foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
                         wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' );
                         wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' );
+                        wp_cache_delete( "lastpostdate:$timezone:{$post->post_type}", 'timeinfo' );
                 }
         }