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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 3911 | break; |
| 3912 | case 'server': |
| 3913 | $lastpostdate = $wpdb->get_var("SELECT DATE_ADD(post_date_gmt, INTERVAL '$add_seconds_server' SECOND) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type = 'post' ORDER BY post_date_gmt DESC LIMIT 1"); |
| 3914 | break; |
| 3915 | } |
| 3916 | $cache_lastpostdate[$blog_id][$timezone] = $lastpostdate; |
| 3917 | } else { |
| 3918 | $lastpostdate = $cache_lastpostdate[$blog_id][$timezone]; |
| 3919 | } |
| 3920 | return apply_filters( 'get_lastpostdate', $lastpostdate, $timezone ); |
| 3921 | } |
| 3922 | |
| 3923 | /** |
| 3924 | * Retrieve last post modified date depending on timezone. |
| 3925 | * |
| 3926 | * The server timezone is the default and is the difference between GMT and |
| 3927 | * server time. The 'blog' value is just when the last post was modified. The |
| 3928 | * 'gmt' is when the last post was modified in GMT time. |
| 3929 | * |