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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 |
|---|---|
| 1408 | function get_the_date( $d = '' ) { |
| 1409 | $post = get_post(); |
| 1410 | $the_date = ''; |
| 1411 | |
| 1412 | if ( '' == $d ) |
| 1413 | $the_date .= mysql2date(get_option('date_format'), $post->post_date); |
| 1414 | else |
| 1415 | $the_date .= mysql2date($d, $post->post_date); |
| 1416 | |
| 1417 | return apply_filters('get_the_date', $the_date, $d); |
| 1418 | } |
| 1419 | |
| 1420 | /** |
| 1421 | * Display the date on which the post was last modified. |
| 1422 | * |
| 1423 | * @since 2.1.0 |
| 1424 | * |
| 1425 | * @param string $d Optional. PHP date format defaults to the date_format option if not specified. |
| 1426 | * @param string $before Optional. Output before the date. |