/**
* Sets headers on post object pages (posts, pages, attachments, custom
* post types).
*
* In order to calculate the modified time, two time sources are used:
* 1) the post object's modified time.
* 2) the modified time of the most recent comment that is attached to the post object.
* The most "recent" timestamp of the two is returned.
*/
function addh_set_headers_for_object($options)
{
// Get current queried object.
$post = get_queried_object();
// Valid post types: post, page, attachment, public custom post types
if (!is_object($post) || !isset($post->post_type) || !in_array(get_post_type($post), addh_get_supported_post_types_singular())) {
return;
}
// Check for password protected posts
if (post_password_required()) {
return;
}
// Retrieve stored time of post object
$post_mtime = $post->post_modified_gmt;
$post_mtime_unix = strtotime($post_mtime);
// Initially set the $mtime to the post mtime timestamp
$mtime = $post_mtime_unix;
// If there are comments attached to this post object, find the mtime of
// the most recent comment.
if (intval($post->comment_count) > 0) {
// Retrieve the mtime of the most recent comment
$comments = get_comments(array('status' => 'approve', 'orderby' => 'comment_date_gmt', 'number' => '1', 'post_id' => $post->ID));
if (!empty($comments)) {
$comment = $comments[0];
$comment_mtime = $comment->comment_date_gmt;
$comment_mtime_unix = strtotime($comment_mtime);
// Compare the two mtimes and keep the most recent (higher) one.
if ($comment_mtime_unix > $post_mtime_unix) {
$mtime = $comment_mtime_unix;
}
}
}
addh_batch_generate_headers($post, $mtime, $options);
}
/**
* Sets headers on post object pages (posts, pages, attachments, custom
* post types).
*
* In order to calculate the modified time, two time sources are used:
* 1) the post object's modified time.
* 2) the modified time of the most recent comment that is attached to the post object.
* The most "recent" timestamp of the two is returned.
*/
function addh_set_headers_for_object($options)
{
// Get current queried object.
$post = get_queried_object();
// Valid post types: post, page, attachment, public custom post types
if (!is_object($post) || !isset($post->post_type) || !in_array(get_post_type($post), addh_get_supported_post_types_singular())) {
return;
}
// Check for password protected posts
if (post_password_required()) {
return;
}
// Retrieve stored time of post object
$post_mtime = $post->post_modified_gmt;
$post_mtime_unix = strtotime($post_mtime);
// Initially set the $mtime to the post mtime timestamp
$mtime = $post_mtime_unix;
// If there are comments attached to this post object, find the mtime of
// the most recent comment.
if (intval($post->comment_count) > 0) {
// Retrieve the mtime of the most recent comment
$comments = get_comments(array('status' => 'approve', 'orderby' => 'comment_date_gmt', 'number' => '1', 'post_id' => $post->ID));
if (!empty($comments)) {
$comment = $comments[0];
$comment_mtime = $comment->comment_date_gmt;
$comment_mtime_unix = strtotime($comment_mtime);
// Compare the two mtimes and keep the most recent (higher) one.
if ($comment_mtime_unix > $post_mtime_unix) {
$mtime = $comment_mtime_unix;
}
}
}
// Check for old content (only if a threshold is set)
if (absint($options['cache_old_content_threshold_seconds']) > 0) {
// Find the time that determines whether a resource should be treated as 'old content'.
// Basically this is the current GM time minus the 'old content threshold in seconds' as set in the option.
$threshold_time_unix = absint(gmdate('U')) - absint($options['cache_old_content_threshold_seconds']);
// Any content which has been last modified before that time should be treated as old
// and the 'cache_old_content_max_age_seconds' option should be used as the caching
// timeout, instead of 'cache_max_age_seconds'.
// Here we check whether the mtime (last modified time) is older than the threshold time.
if ($mtime < $threshold_time_unix) {
// This content is old. Set the caching timeout to the caching timeout of old content.
$options['cache_max_age_seconds'] = $options['cache_old_content_max_age_seconds'];
}
}
addh_batch_generate_headers($post, $mtime, $options);
}
