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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.
This hook occurs 3 times in this file.
| Line | Code |
|---|---|
| 942 | } |
| 943 | /** |
| 944 | * Filters the HTML output of individual page number links. |
| 945 | * |
| 946 | * @since 3.6.0 |
| 947 | * |
| 948 | * @param string $link The page number HTML output. |
| 949 | * @param int $i Page number for paginated posts' page links. |
| 950 | */ |
| 951 | $link = apply_filters( 'wp_link_pages_link', $link, $i ); |
| 952 | |
| 953 | // Use the custom links separator beginning with the second link. |
| 954 | $output .= ( 1 === $i ) ? ' ' : $r['separator']; |
| 955 | $output .= $link; |
| 956 | } |
| 957 | $output .= $r['after']; |
| 958 | } elseif ( $more ) { |
| 959 | $output .= $r['before']; |
| 960 | $prev = $page - 1; |
| 961 | if ( $prev > 0 ) { |
| 962 | $link = _wp_link_page( $prev ) . $r['link_before'] . $r['previouspagelink'] . $r['link_after'] . '</a>'; |
| 963 | |
| 964 | /** This filter is documented in wp-includes/post-template.php */ |
| 965 | $output .= apply_filters( 'wp_link_pages_link', $link, $prev ); |
| 966 | } |
| 967 | $next = $page + 1; |
| 968 | if ( $next <= $numpages ) { |
| 969 | if ( $prev ) { |
| 970 | $output .= $r['separator']; |
| 971 | } |
| 972 | $link = _wp_link_page( $next ) . $r['link_before'] . $r['nextpagelink'] . $r['link_after'] . '</a>'; |
| 973 | |
| 974 | /** This filter is documented in wp-includes/post-template.php */ |
| 975 | $output .= apply_filters( 'wp_link_pages_link', $link, $next ); |
| 976 | } |
| 977 | $output .= $r['after']; |
| 978 | } |
| 979 | } |
| 980 | |
| 981 | /** |
| 982 | * Filters the HTML output of page links for paginated posts. |
| 983 | * |
| 984 | * @since 3.6.0 |