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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 |
|---|---|
| 1460 | |
| 1461 | $string = '<a href="'.get_permalink($post).'" rel="'.$rel.'">'; |
| 1462 | $link = str_replace('%title', $title, $link); |
| 1463 | $link = str_replace('%date', $date, $link); |
| 1464 | $link = $string . $link . '</a>'; |
| 1465 | |
| 1466 | $format = str_replace('%link', $link, $format); |
| 1467 | |
| 1468 | $adjacent = $previous ? 'previous' : 'next'; |
| 1469 | echo apply_filters( "{$adjacent}_post_link", $format, $link ); |
| 1470 | } |
| 1471 | |
| 1472 | /** |
| 1473 | * Retrieve get links for page numbers. |
| 1474 | * |
| 1475 | * @since 1.5.0 |
| 1476 | * |
| 1477 | * @param int $pagenum Optional. Page ID. |
| 1478 | * @return string |