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site_status_page_cache_supported_cache_headers › WordPress Filter Hooks

Since6.1.0
Deprecatedn/a
› apply_filters( 'site_status_page_cache_supported_cache_headers', $cache_headers )
Parameters:
  • () cache_headers Mapping from cache-related HTTP headers to whether they indicate if a page cache is enabled for the site. `null` indicates caching in the presence of the header; a callback is provided the header’s value and should return `true` if it implies that a cache is active.
    Required: Yes
Defined at:
Codex:

Filters the list of cache headers supported by core.

This list indicates how each of the specified headers will be checked to indicate if a page cache is enabled or not. WordPress checks for each of the headers in the returned array. If the callback is provided, it will be passed the value for the corresponding header and return a boolean value indicating if the header suggests that a cache is active. If the value is `null` for the header, then WordPress will assume that a cache is active if the header is present, regardless of its value.


Related Functions: wp_get_nocache_headers, wp_cache_supports, is_site_meta_supported, rest_send_cors_headers


Related Hooks: rest_send_nocache_headers, site_status_persistent_object_cache_notes, site_status_available_object_cache_services, rest_exposed_cors_headers, site_status_persistent_object_cache_thresholds

Source 

return (array) apply_filters( 'site_status_page_cache_supported_cache_headers', $cache_headers );