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To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
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.
This hook occurs 4 times in this file.
| Line | Code |
|---|---|
| 1387 | function get_calendar($initial = true, $echo = true) { |
| 1388 | global $wpdb, $m, $monthnum, $year, $wp_locale, $posts; |
| 1389 | |
| 1390 | $cache = array(); |
| 1391 | $key = md5( $m . $monthnum . $year ); |
| 1392 | if ( $cache = wp_cache_get( 'get_calendar', 'calendar' ) ) { |
| 1393 | if ( is_array($cache) && isset( $cache[ $key ] ) ) { |
| 1394 | if ( $echo ) { |
| 1395 | /** This filter is documented in wp-includes/general-template.php */ |
| 1396 | echo apply_filters( 'get_calendar', $cache[$key] ); |
| 1397 | return; |
| 1398 | } else { |
| 1399 | /** This filter is documented in wp-includes/general-template.php */ |
| 1400 | return apply_filters( 'get_calendar', $cache[$key] ); |
| 1401 | } |
| 1402 | } |
| 1403 | } |
| 1404 | |
| 1405 | if ( !is_array($cache) ) |
| 1406 | $cache = array(); |
| 1407 | |
| 1408 | // Quick check. If we have no posts at all, abort! |
| 1409 | if ( !$posts ) { |
| Line | Code |
| 1582 | |
| 1583 | if ( $echo ) { |
| 1584 | /** |
| 1585 | * Filter the HTML calendar output. |
| 1586 | * |
| 1587 | * @since 3.0.0 |
| 1588 | * |
| 1589 | * @param string $calendar_output HTML output of the calendar. |
| 1590 | */ |
| 1591 | echo apply_filters( 'get_calendar', $calendar_output ); |
| 1592 | } else { |
| 1593 | /** This filter is documented in wp-includes/general-template.php */ |
| 1594 | return apply_filters( 'get_calendar', $calendar_output ); |
| 1595 | } |
| 1596 | |
| 1597 | } |
| 1598 | |
| 1599 | /** |
| 1600 | * Purge the cached results of get_calendar. |
| 1601 | * |
| 1602 | * @see get_calendar |
| 1603 | * @since 2.1.0 |