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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 |
---|---|
3231 | } |
3232 |
|
3233 | return array( |
3234 | 'advanced_cache_present' => ( |
3235 | file_exists( WP_CONTENT_DIR . '/advanced-cache.php' ) |
3236 | && |
3237 | ( defined( 'WP_CACHE' ) && WP_CACHE ) |
3238 | && |
3239 | /** This filter is documented in wp-settings.php */ |
3240 | apply_filters( 'enable_loading_advanced_cache_dropin', true ) |
3241 | ), |
3242 | 'page_caching_response_headers' => $page_caching_response_headers, |
3243 | 'response_timing' => $response_timing, |
3244 | ); |
3245 | } |
3246 |
|
3247 | /** |
3248 | * Gets page cache details. |
3249 | * |