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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 |
|---|---|
| 4007 | * "Pages" are determined by splitting the post content based on the presence |
| 4008 | * of `<!-- nextpage -->` tags. |
| 4009 | * |
| 4010 | * @since 4.4.0 |
| 4011 | * |
| 4012 | * @param array $pages Array of "pages" derived from the post content. |
| 4013 | * of `<!-- nextpage -->` tags.. |
| 4014 | * @param WP_Post $post Current post object. |
| 4015 | */ |
| 4016 | $pages = apply_filters( 'content_pagination', $pages, $post ); |
| 4017 | |
| 4018 | $numpages = count( $pages ); |
| 4019 | |
| 4020 | if ( $numpages > 1 ) { |
| 4021 | if ( $page > 1 ) { |
| 4022 | $more = 1; |
| 4023 | } |
| 4024 | $multipage = 1; |
| 4025 | } else { |