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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 |
|---|---|
| 1404 | * @since 2.7.0 |
| 1405 | * |
| 1406 | * @param string $label Optional. Previous page link text. |
| 1407 | * @return string|null |
| 1408 | */ |
| 1409 | function get_previous_posts_link( $label = '« Previous Page' ) { |
| 1410 | global $paged; |
| 1411 | |
| 1412 | if ( !is_single() && $paged > 1 ) { |
| 1413 | $attr = apply_filters( 'previous_posts_link_attributes', '' ); |
| 1414 | return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/', '&$1', $label ) .'</a>'; |
| 1415 | } |
| 1416 | } |
| 1417 | |
| 1418 | /** |
| 1419 | * Display the previous posts page link. |
| 1420 | * |
| 1421 | * @since 0.71 |
| 1422 | * @uses get_previous_posts_link() |