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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 |
|---|---|
| 2102 | |
| 2103 | if ( !is_single() && $paged > 1 ) { |
| 2104 | /** |
| 2105 | * Filter the anchor tag attributes for the previous posts page link. |
| 2106 | * |
| 2107 | * @since 2.7.0 |
| 2108 | * |
| 2109 | * @param string $attributes Attributes for the anchor tag. |
| 2110 | */ |
| 2111 | $attr = apply_filters( 'previous_posts_link_attributes', '' ); |
| 2112 | return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) .'</a>'; |
| 2113 | } |
| 2114 | } |
| 2115 | |
| 2116 | /** |
| 2117 | * Display the previous posts page link. |
| 2118 | * |
| 2119 | * @since 0.71 |
| 2120 | * @uses get_previous_posts_link() |