/**
* Converts $value to required date-time format
* @param int|string $value - int: unix timestamp | string: valid date/time/date-time string
* @param string $format - resulting value format
* @param string|int|bool $now - current unix timestamp or any valid strtotime() string
* @return string
*/
public static function formatDateTime($value, $format, $now = 'now')
{
if (is_string($value) && strtotime($value) != 0) {
// convert string value to unix timestamp and then to required date format
if (!is_string($now) && !is_int($now)) {
$now = 'now';
}
if (strtolower($now) === 'now' || empty($now)) {
$value = strtotime($value);
} else {
if (is_numeric($now)) {
$value = strtotime($value, $now);
} else {
$value = strtotime($value, strtotime($now));
}
}
}
return ValidateValue::isInteger($value, false) ? date($format, $value) : null;
}
/**
* @param int $pngQuality
* @return $this
* @throws ImageVersionConfigException
*/
public function setPngQuality($pngQuality)
{
if (!ValidateValue::isInteger($pngQuality, true) || $pngQuality <= 0 || $pngQuality > 9) {
throw new ImageVersionConfigException('PNG image quality should be within 1 and 9');
}
$this->pngQuality = $pngQuality;
return $this;
}