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63 lines
1.5 KiB
PHTML
63 lines
1.5 KiB
PHTML
7 months ago
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<?php
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/**
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* Sitemap date format class.
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*
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* @since 0.9.0
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* @package RankMath
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* @subpackage RankMath\Sitemap
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* @author Rank Math <support@rankmath.com>
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*
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* @copyright Copyright (C) 2008-2019, Yoast BV
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* The following code is a derivative work of the code from the Yoast(https://github.com/Yoast/wordpress-seo/), which is licensed under GPL v3.
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*/
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namespace RankMath\Sitemap;
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use DateTime;
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use Exception;
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use DateTimeZone;
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defined( 'ABSPATH' ) || exit;
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/**
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* Timezone.
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*/
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class Timezone {
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/**
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* Format arbitrary UTC datetime string to desired form in site's time zone.
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*
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* @param string $datetime_string The input datetime string in UTC time zone.
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* @param string $format Date format to use.
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*
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* @return string
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*/
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public function format_date( $datetime_string, $format = DATE_W3C ) {
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if ( empty( $datetime_string ) || false === $this->is_valid_datetime( $datetime_string ) ) {
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return '';
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}
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$date_time = new DateTime( $datetime_string, new DateTimeZone( 'UTC' ) );
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return false === $date_time ? '' : $date_time->format( $format );
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}
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/**
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* Check if a string is a valid datetime.
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*
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* @param string $datetime String input to check as valid input for DateTime class.
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* @return boolean
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*/
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private function is_valid_datetime( $datetime ) {
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if ( substr( $datetime, 0, 1 ) === '-' ) {
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return false;
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}
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try {
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return new DateTime( $datetime ) !== false;
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} catch ( Exception $exc ) {
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return false;
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}
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}
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}
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