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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 |
|---|---|
| 3283 | break; |
| 3284 | case 'server': |
| 3285 | $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"); |
| 3286 | break; |
| 3287 | } |
| 3288 | $cache_lastpostdate[$blog_id][$timezone] = $lastpostdate; |
| 3289 | } else { |
| 3290 | $lastpostdate = $cache_lastpostdate[$blog_id][$timezone]; |
| 3291 | } |
| 3292 | return apply_filters( 'get_lastpostdate', $lastpostdate, $timezone ); |
| 3293 | } |
| 3294 | |
| 3295 | /** |
| 3296 | * Retrieve last post modified date depending on timezone. |
| 3297 | * |
| 3298 | * The server timezone is the default and is the difference between GMT and |
| 3299 | * server time. The 'blog' value is just when the last post was modified. The |
| 3300 | * 'gmt' is when the last post was modified in GMT time. |
| 3301 | * |