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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 |
|---|---|
| 641 | 'next_or_number' => 'number', |
| 642 | 'separator' => ' ', |
| 643 | 'nextpagelink' => __( 'Next page' ), |
| 644 | 'previouspagelink' => __( 'Previous page' ), |
| 645 | 'pagelink' => '%', |
| 646 | 'echo' => 1 |
| 647 | ); |
| 648 | |
| 649 | $r = wp_parse_args( $args, $defaults ); |
| 650 | $r = apply_filters( 'wp_link_pages_args', $r ); |
| 651 | extract( $r, EXTR_SKIP ); |
| 652 | |
| 653 | global $page, $numpages, $multipage, $more, $pagenow; |
| 654 | |
| 655 | $output = ''; |
| 656 | if ( $multipage ) { |
| 657 | if ( 'number' == $next_or_number ) { |
| 658 | $output .= $before; |
| 659 | for ( $i = 1; $i <= $numpages; $i++ ) { |