/**
* Cache datetime generation and convert to db format
* Based on xhprof data, this operation in time consuming, so we need to cache that
*
* @return mixed
*/
function getConvertDatetime()
{
static $datetime = '';
self::$datetimeCacheIndex++;
if (self::$datetimeCacheIndex > self::$datetimeIndexMax || empty($datetime)) {
$datetime = $GLOBALS['db']->convert("'" . date('Y-m-d H:i:s') . "'", 'datetime');
self::$datetimeCacheIndex = 0;
}
return $datetime;
}
