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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 |
|---|---|
| 3166 | ); |
| 3167 | |
| 3168 | /** |
| 3169 | * Filters the list of cache headers supported by core. |
| 3170 | * |
| 3171 | * @since 6.1.0 |
| 3172 | * |
| 3173 | * @param array $cache_headers Array of supported cache headers. |
| 3174 | */ |
| 3175 | return apply_filters( 'site_status_page_cache_supported_cache_headers', $cache_headers ); |
| 3176 | } |
| 3177 | |
| 3178 | /** |
| 3179 | * Checks if site has page cache enabled or not. |
| 3180 | * |
| 3181 | * @since 6.1.0 |
| 3182 | * |
| 3183 | * @return WP_Error|array { |
| 3184 | * Page cache detection details or else error information. |