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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 |
|---|---|
| 1546 | function the_weekday_date($before='',$after='') { |
| 1547 | global $wp_locale, $post, $day, $previousweekday; |
| 1548 | $the_weekday_date = ''; |
| 1549 | if ( $day != $previousweekday ) { |
| 1550 | $the_weekday_date .= $before; |
| 1551 | $the_weekday_date .= $wp_locale->get_weekday(mysql2date('w', $post->post_date, false)); |
| 1552 | $the_weekday_date .= $after; |
| 1553 | $previousweekday = $day; |
| 1554 | } |
| 1555 | $the_weekday_date = apply_filters('the_weekday_date', $the_weekday_date, $before, $after); |
| 1556 | echo $the_weekday_date; |
| 1557 | } |
| 1558 | |
| 1559 | /** |
| 1560 | * Fire the wp_head action |
| 1561 | * |
| 1562 | * @since 1.2.0 |
| 1563 | * @uses do_action() Calls 'wp_head' hook. |
| 1564 | */ |