How do I convert my time from 2010-12-30 23:21:46
to ISO 8601 date format? (-_-;)
This is the recommended way.
$datetime = new DateTime('2010-12-30 23:21:46');
echo $datetime->format(DateTime::ATOM); // Updated ISO8601
For older versions of PHP, or if you are more comfortable with procedural code.
echo date(DATE_ISO8601, strtotime('2010-12-30 23:21:46'));