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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 |
---|---|
891 | } |
892 | /** |
893 | * Filters the HTML output of individual page number links. |
894 | * |
895 | * @since 3.6.0 |
896 | * |
897 | * @param string $link The page number HTML output. |
898 | * @param int $i Page number for paginated posts' page links. |
899 | */ |
900 | $link = apply_filters( 'wp_link_pages_link', $link, $i ); |
901 |
|
902 | // Use the custom links separator beginning with the second link. |
903 | $output .= ( 1 === $i ) ? ' ' : $r['separator']; |
904 | $output .= $link; |
905 | } |
906 | $output .= $r['after']; |
907 | } elseif ( $more ) { |
908 | $output .= $r['before']; |
909 | $prev = $page - 1; |
910 | if ( $prev > 0 ) { |
911 | $link = _wp_link_page( $prev ) . $r['link_before'] . $r['previouspagelink'] . $r['link_after'] . '</a>'; |
912 |
|
913 | /** This filter is documented in wp-includes/post-template.php */ |
914 | $output .= apply_filters( 'wp_link_pages_link', $link, $prev ); |
915 | } |
916 | $next = $page + 1; |
917 | if ( $next <= $numpages ) { |
918 | if ( $prev ) { |
919 | $output .= $r['separator']; |
920 | } |
921 | $link = _wp_link_page( $next ) . $r['link_before'] . $r['nextpagelink'] . $r['link_after'] . '</a>'; |
922 |
|
923 | /** This filter is documented in wp-includes/post-template.php */ |
924 | $output .= apply_filters( 'wp_link_pages_link', $link, $next ); |
925 | } |
926 | $output .= $r['after']; |
927 | } |
928 | } |
929 |
|
930 | /** |
931 | * Filters the HTML output of page links for paginated posts. |
932 | * |
933 | * @since 3.6.0 |