RSSCache::check_cache( $url )
Source
File: wp-includes/rss.php
function check_cache ( $url ) {
$this->ERROR = "";
$cache_option = 'rss_' . $this->file_name( $url );
if ( get_transient($cache_option) ) {
// object exists and is current
return 'HIT';
} else {
// object does not exist
return 'MISS';
}
}