+ if (($max_level <= CACHE_HOUR) AND (get_config("system", "cache_cleared_hour")) < time() - self::duration(CACHE_HOUR)) {
+ q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
+ dbesc(datetime_convert('UTC','UTC',"now - 1 hours")), intval(CACHE_HOUR));
+
+ set_config("system", "cache_cleared_hour", time());
+ }
+
+ if (($max_level <= CACHE_HALF_HOUR) AND (get_config("system", "cache_cleared_half_hour")) < time() - self::duration(CACHE_HALF_HOUR)) {
+ q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
+ dbesc(datetime_convert('UTC','UTC',"now - 30 minutes")), intval(CACHE_HALF_HOUR));
+
+ set_config("system", "cache_cleared_half_hour", time());
+ }
+
+ if (($max_level <= CACHE_QUARTER_HOUR) AND (get_config("system", "cache_cleared_hour")) < time() - self::duration(CACHE_QUARTER_HOUR)) {
+ q("DELETE FROM `cache` WHERE `updated` < '%s' AND `expire_mode` = %d",
+ dbesc(datetime_convert('UTC','UTC',"now - 15 minutes")), intval(CACHE_QUARTER_HOUR));
+
+ set_config("system", "cache_cleared_quarter_hour", time());
+ }