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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 |
|---|---|
| 2303 | |
| 2304 | if ( !is_single() && $paged > 1 ) { |
| 2305 | /** |
| 2306 | * Filters the anchor tag attributes for the previous posts page link. |
| 2307 | * |
| 2308 | * @since 2.7.0 |
| 2309 | * |
| 2310 | * @param string $attributes Attributes for the anchor tag. |
| 2311 | */ |
| 2312 | $attr = apply_filters( 'previous_posts_link_attributes', '' ); |
| 2313 | return '<a href="' . previous_posts( false ) . "\" $attr>". preg_replace( '/&([^#])(?![a-z]{1,8};)/i', '&$1', $label ) .'</a>'; |
| 2314 | } |
| 2315 | } |
| 2316 | |
| 2317 | /** |
| 2318 | * Displays the previous posts page link. |
| 2319 | * |
| 2320 | * @since 0.71 |
| 2321 | * |