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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 |
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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. |