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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 |
|---|---|
| 3239 | } |
| 3240 | |
| 3241 | return array( |
| 3242 | 'advanced_cache_present' => ( |
| 3243 | file_exists( WP_CONTENT_DIR . '/advanced-cache.php' ) |
| 3244 | && |
| 3245 | ( defined( 'WP_CACHE' ) && WP_CACHE ) |
| 3246 | && |
| 3247 | /** This filter is documented in wp-settings.php */ |
| 3248 | apply_filters( 'enable_loading_advanced_cache_dropin', true ) |
| 3249 | ), |
| 3250 | 'page_caching_response_headers' => $page_caching_response_headers, |
| 3251 | 'response_timing' => $response_timing, |
| 3252 | ); |
| 3253 | } |
| 3254 | |
| 3255 | /** |
| 3256 | * Gets page cache details. |
| 3257 | * |