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<?php
/**
* Date helper class.
*
* @package WPSEO\Internals
*/
/**
* Class WPSEO_Date_Helper
*
* Note: Move this class with namespace to the src/helpers directory and add a class_alias for BC.
*/
class WPSEO_Date_Helper {
/**
* Formats a given date in UTC TimeZone format.
*
* @param string $date String representing the date / time.
* @param string $format The format that the passed date should be in.
*
* @return string The formatted date.
*/
public function format( $date, $format = DATE_W3C ) {
$immutable_date = date_create_immutable_from_format( 'Y-m-d H:i:s', $date, new DateTimeZone( 'UTC' ) );
if ( ! $immutable_date ) {
return $date;
}
return $immutable_date->format( $format );
}
/**
* Formats the given timestamp to the needed format.
*
* @param int $timestamp The timestamp to use for the formatting.
* @param string $format The format that the passed date should be in.
*
* @return string The formatted date.
*/
public function format_timestamp( $timestamp, $format = DATE_W3C ) {
$immutable_date = date_create_immutable_from_format( 'U', $timestamp, new DateTimeZone( 'UTC' ) );
if ( ! $immutable_date ) {
return $timestamp;
}
return $immutable_date->format( $format );
}
/**
* Formats a given date in UTC TimeZone format and translate it to the set language.
*
* @param string $date String representing the date / time.
* @param string $format The format that the passed date should be in.
*
* @return string The formatted and translated date.
*/
public function format_translated( $date, $format = DATE_W3C ) {
return date_i18n( $format, $this->format( $date, 'U' ) );
}
/**
* Check if a string is a valid datetime.
*
* @param string $datetime String input to check as valid input for DateTime class.
*
* @return bool True when datatime is valid.
*/
public function is_valid_datetime( $datetime ) {
if ( substr( $datetime, 0, 1 ) === '-' ) {
return false;
}
try {
return new DateTime( $datetime ) !== false;
} catch ( Exception $exception ) {
return false;
}
}
}