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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 |
|---|---|
| 1398 | function the_weekday_date($before='',$after='') { |
| 1399 | global $wp_locale, $post, $day, $previousweekday; |
| 1400 | $the_weekday_date = ''; |
| 1401 | if ( $day != $previousweekday ) { |
| 1402 | $the_weekday_date .= $before; |
| 1403 | $the_weekday_date .= $wp_locale->get_weekday(mysql2date('w', $post->post_date, false)); |
| 1404 | $the_weekday_date .= $after; |
| 1405 | $previousweekday = $day; |
| 1406 | } |
| 1407 | $the_weekday_date = apply_filters('the_weekday_date', $the_weekday_date, $before, $after); |
| 1408 | echo $the_weekday_date; |
| 1409 | } |
| 1410 | |
| 1411 | /** |
| 1412 | * Fire the wp_head action |
| 1413 | * |
| 1414 | * @since 1.2.0 |
| 1415 | * @uses do_action() Calls 'wp_head' hook. |
| 1416 | */ |