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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 |
---|---|
741 | $r = wp_parse_args( $args, $defaults ); |
742 |
|
743 | /** |
744 | * Filter the arguments used in retrieving page links for paginated posts. |
745 | * |
746 | * @since 3.0.0 |
747 | * |
748 | * @param array $r An array of arguments for page links for paginated posts. |
749 | */ |
750 | $r = apply_filters( 'wp_link_pages_args', $r ); |
751 | extract( $r, EXTR_SKIP ); |
752 |
|
753 | global $page, $numpages, $multipage, $more; |
754 |
|
755 | $output = ''; |
756 | if ( $multipage ) { |
757 | if ( 'number' == $next_or_number ) { |
758 | $output .= $before; |
759 | for ( $i = 1; $i <= $numpages; $i++ ) { |