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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 |
|---|---|
| 1606 | function the_weekday_date($before='',$after='') { |
| 1607 | global $wp_locale, $currentday, $previousweekday; |
| 1608 | $the_weekday_date = ''; |
| 1609 | if ( $currentday != $previousweekday ) { |
| 1610 | $the_weekday_date .= $before; |
| 1611 | $the_weekday_date .= $wp_locale->get_weekday( mysql2date( 'w', get_post()->post_date, false ) ); |
| 1612 | $the_weekday_date .= $after; |
| 1613 | $previousweekday = $currentday; |
| 1614 | } |
| 1615 | $the_weekday_date = apply_filters('the_weekday_date', $the_weekday_date, $before, $after); |
| 1616 | echo $the_weekday_date; |
| 1617 | } |
| 1618 | |
| 1619 | /** |
| 1620 | * Fire the wp_head action |
| 1621 | * |
| 1622 | * @since 1.2.0 |
| 1623 | * @uses do_action() Calls 'wp_head' hook. |
| 1624 | */ |