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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 |
|---|---|
| 1210 | |
| 1211 | $string = '<a href="'.get_permalink($post).'">'; |
| 1212 | $link = str_replace('%title', $title, $link); |
| 1213 | $link = str_replace('%date', $date, $link); |
| 1214 | $link = $string . $link . '</a>'; |
| 1215 | |
| 1216 | $format = str_replace('%link', $link, $format); |
| 1217 | |
| 1218 | $adjacent = $previous ? 'previous' : 'next'; |
| 1219 | echo apply_filters( "{$adjacent}_post_link", $format, $link ); |
| 1220 | } |
| 1221 | |
| 1222 | /** |
| 1223 | * Retrieve get links for page numbers. |
| 1224 | * |
| 1225 | * @since 1.5.0 |
| 1226 | * |
| 1227 | * @param int $pagenum Optional. Page ID. |
| 1228 | * @return string |