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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 |
|---|---|
| 1434 | $inlink = str_replace( '%title', $title, $link ); |
| 1435 | $inlink = str_replace( '%date', $date, $inlink ); |
| 1436 | $inlink = $string . $inlink . '</a>'; |
| 1437 | |
| 1438 | $output = str_replace( '%link', $inlink, $format ); |
| 1439 | } |
| 1440 | |
| 1441 | $adjacent = $previous ? 'previous' : 'next'; |
| 1442 | |
| 1443 | return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post ); |
| 1444 | } |
| 1445 | |
| 1446 | /** |
| 1447 | * Display adjacent post link. |
| 1448 | * |
| 1449 | * Can be either next post link or previous. |
| 1450 | * |
| 1451 | * @since 2.5.0 |
| 1452 | * @uses get_adjacent_post_link() |