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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 |
|---|---|
| 2633 | |
| 2634 | if ( ! is_single() && $paged > 1 ) { |
| 2635 | /** |
| 2636 | * Filters the anchor tag attributes for the previous posts page link. |
| 2637 | * |
| 2638 | * @since 2.7.0 |
| 2639 | * |
| 2640 | * @param string $attributes Attributes for the anchor tag. |
| 2641 | */ |
| 2642 | $attr = apply_filters( 'previous_posts_link_attributes', '' ); |
| 2643 | |
| 2644 | return sprintf( |
| 2645 | '<a href="%1$s" %2$s>%3$s</a>', |
| 2646 | previous_posts( false ), |
| 2647 | $attr, |
| 2648 | preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) |
| 2649 | ); |
| 2650 | } |
| 2651 | } |