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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 |
|---|---|
| 1020 | /** |
| 1021 | * Filters the HTML output of page links for paginated posts. |
| 1022 | * |
| 1023 | * @since 3.6.0 |
| 1024 | * |
| 1025 | * @param string $output HTML output of paginated posts' page links. |
| 1026 | * @param array|string $args An array or query string of arguments. See wp_link_pages() |
| 1027 | * for information on accepted arguments. |
| 1028 | */ |
| 1029 | $html = apply_filters( 'wp_link_pages', $output, $args ); |
| 1030 | |
| 1031 | if ( $parsed_args['echo'] ) { |
| 1032 | echo $html; |
| 1033 | } |
| 1034 | return $html; |
| 1035 | } |
| 1036 | |
| 1037 | /** |
| 1038 | * Helper function for wp_link_pages(). |