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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 |
|---|---|
| 797 | |
| 798 | /** |
| 799 | * Filter the HTML output of page links for paginated posts. |
| 800 | * |
| 801 | * @since 3.6.0 |
| 802 | * |
| 803 | * @param string $output HTML output of paginated posts' page links. |
| 804 | * @param array $args An array of arguments. |
| 805 | */ |
| 806 | $output = apply_filters( 'wp_link_pages', $output, $args ); |
| 807 | |
| 808 | if ( $echo ) |
| 809 | echo $output; |
| 810 | |
| 811 | return $output; |
| 812 | } |
| 813 | |
| 814 | /** |
| 815 | * Helper function for wp_link_pages(). |