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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.
This hook occurs 3 times in this file.
Line | Code |
---|---|
2192 | */ |
2193 | function get_calendar( $initial = true, $echo = true ) { |
2194 | global $wpdb, $m, $monthnum, $year, $wp_locale, $posts; |
2195 |
|
2196 | $key = md5( $m . $monthnum . $year ); |
2197 | $cache = wp_cache_get( 'get_calendar', 'calendar' ); |
2198 |
|
2199 | if ( $cache && is_array( $cache ) && isset( $cache[ $key ] ) ) { |
2200 | /** This filter is documented in wp-includes/general-template.php */ |
2201 | $output = apply_filters( 'get_calendar', $cache[ $key ] ); |
2202 |
|
2203 | if ( $echo ) { |
2204 | echo $output; |
2205 | return; |
2206 | } |
2207 |
|
2208 | return $output; |
2209 | } |
2210 |
|
Line | Code |
2399 |
|
2400 | if ( $echo ) { |
2401 | /** |
2402 | * Filters the HTML calendar output. |
2403 | * |
2404 | * @since 3.0.0 |
2405 | * |
2406 | * @param string $calendar_output HTML output of the calendar. |
2407 | */ |
2408 | echo apply_filters( 'get_calendar', $calendar_output ); |
2409 | return; |
2410 | } |
2411 | /** This filter is documented in wp-includes/general-template.php */ |
2412 | return apply_filters( 'get_calendar', $calendar_output ); |
2413 | } |
2414 |
|
2415 | /** |
2416 | * Purge the cached results of get_calendar. |
2417 | * |
2418 | * @see get_calendar() |
2419 | * @since 2.1.0 |
2420 | */ |
2421 | function delete_get_calendar_cache() { |