namespace Friendica\Util;
+use Friendica\Core\Logger;
use DateTime;
use DateTimeZone;
use Exception;
{
const ATOM = 'Y-m-d\TH:i:s\Z';
const MYSQL = 'Y-m-d H:i:s';
+ const HTTP = 'D, d M Y H:i:s \G\M\T';
/**
* convert() shorthand for UTC.
* @param string $time A date/time string
* @param string $format DateTime format string or Temporal constant
* @return string
+ * @throws Exception
*/
public static function utc($time, $format = self::MYSQL)
{
* @param string $time A date/time string
* @param string $format DateTime format string or Temporal constant
* @return string
+ * @throws Exception
*/
public static function local($time, $format = self::MYSQL)
{
/**
* convert() shorthand for timezoned now.
*
+ * @param $timezone
* @param string $format DateTime format string or Temporal constant
* @return string
+ * @throws Exception
*/
public static function timezoneNow($timezone, $format = self::MYSQL)
{
*
* @param string $format DateTime format string or Temporal constant
* @return string
+ * @throws Exception
*/
public static function localNow($format = self::MYSQL)
{
*
* @param string $format DateTime format string or Temporal constant
* @return string
+ * @throws Exception
*/
public static function utcNow($format = self::MYSQL)
{
* @param string $tz_to Destination timezone
* @param string $tz_from Source timezone
* @param string $format Output format recognised from php's DateTime class
- * http://www.php.net/manual/en/datetime.format.php
+ * http://www.php.net/manual/en/datetime.format.php
*
* @return string Formatted date according to given format
+ * @throws Exception
*/
public static function convert($s = 'now', $tz_to = 'UTC', $tz_from = 'UTC', $format = self::MYSQL)
{
// Defaults to UTC if nothing is set, but throws an exception if set to empty string.
// Provide some sane defaults regardless.
- if ($from === '') {
- $from = 'UTC';
+ if ($tz_from === '') {
+ $tz_from = 'UTC';
}
- if ($to === '') {
- $to = 'UTC';
+ if ($tz_to === '') {
+ $tz_to = 'UTC';
}
if (($s === '') || (!is_string($s))) {
* months and days always start with 1.
*/
if (substr($s, 0, 10) <= '0001-01-01') {
+ if ($s < '0000-00-00') {
+ $s = '0000-00-00';
+ }
$d = new DateTime($s . ' + 32 days', new DateTimeZone('UTC'));
return str_replace('1', '0', $d->format($format));
}
try {
$d = new DateTime($s, $from_obj);
} catch (Exception $e) {
- logger('DateTimeFormat::convert: exception: ' . $e->getMessage());
+ Logger::log('DateTimeFormat::convert: exception: ' . $e->getMessage());
$d = new DateTime('now', $from_obj);
}
return $d->format($format);
}
+
+ /**
+ * Checks, if the given string is a date with the pattern YYYY-MM
+ *
+ * @param string $dateString The given date
+ *
+ * @return boolean True, if the date is a valid pattern
+ */
+ public function isYearMonth(string $dateString)
+ {
+ // Check format (2019-01, 2019-1, 2019-10)
+ if (!preg_match('/^([12]\d{3}-(1[0-2]|0[1-9]|\d))$/', $dateString)) {
+ return false;
+ }
+
+ $date = DateTime::createFromFormat('Y-m', $dateString);
+
+ if (!$date) {
+ return false;
+ }
+
+ try {
+ $now = new DateTime();
+ } catch (\Throwable $t) {
+ return false;
+ }
+
+ if ($date > $now) {
+ return false;
+ }
+
+ return true;
+ }
}