function hook_emit_cache_max_age in Drupal 8 Cache Backport 7

Allows to react to emitting a cache max-age header.

Parameters

int $max_age: The maximum age to set or CACHE_MAX_AGE_PERMANENT.

1 function implements hook_emit_cache_max_age()

Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.

d8cache_emit_cache_max_age in ./d8cache.module

Implements hook_emit_cache_max_age().

1 invocation of hook_emit_cache_max_age()

core.inc in includes/core.inc

Core functions for the D8 caching system backport.

File

./d8cache.api.php, line 36

API documentation for D8Cache.

Code

function hook_emit_cache_max_age($max_age) {
  $page_cache_maximum_age = variable_get('page_cache_maximum_age', 0);
  if ($max_age == CACHE_MAX_AGE_PERMANENT || $max_age > $page_cache_maximum_age) {
    $max_age = $page_cache_maximum_age;
  }
  if (!isset($_COOKIE[session_name()])) {
    header('Cache-Control', 'public, max-age=' . $max_age);
  }
}