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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 |
|---|---|
| 1074 | * Filter the HTML output of the pages to list. |
| 1075 | * |
| 1076 | * @since 1.5.1 |
| 1077 | * |
| 1078 | * @see wp_list_pages() |
| 1079 | * |
| 1080 | * @param string $output HTML output of the pages list. |
| 1081 | * @param array $r An array of page-listing arguments. |
| 1082 | */ |
| 1083 | $html = apply_filters( 'wp_list_pages', $output, $r ); |
| 1084 | |
| 1085 | if ( $r['echo'] ) { |
| 1086 | echo $html; |
| 1087 | } else { |
| 1088 | return $html; |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | /** |