/**
* Tests date string to see if it is in a recognized format.
* @param string $date Date string to test.
* @param array|null $formats Data formats to test.
* @returns \DateTime
* @throws ContentValidationException
*/
public static function validateDateString($date, $formats = null)
{
if ($formats == null) {
$formats = array('Y-m-d', 'm/d/y', 'm/d/Y', 'n/j/y', 'n/j/Y', 'F d, Y', 'F j, Y', 'M d, Y', 'M j, Y');
} elseif (!is_array($formats)) {
$formats = array($formats);
}
foreach ($formats as $format) {
$d = Validation::_testDateFormat($date, $format);
if ($d instanceof \DateTime) {
return $d;
}
}
throw new ContentValidationException("Unrecognized date value.");
}
