WordPress Adding language support to all get_the_date() calls

get_the_date_filter.php

<?php

/**
 * @author Mohammad Mursalenen
 * @param $date
 * @return mixed
 */
function mm_get_date_lang_support($date){

    if ( function_exists('icl_object_id') ) {

        if ('ja' == ICL_LANGUAGE_CODE) {

            $dateformatstring = "Y年-m月-d日";
            $unixtimestamp = strtotime($date);
            $date = date_i18n($dateformatstring, $unixtimestamp);

        }

    }

    return $date;

}


/**
 * @author Mohammad Mursaleen
 * @usage to add japanese lang support to all get_the_date() calls
 * @param $the_date
 * @param $d
 * @param $post
 * @return mixed
 */
function mm_date_lang_support_filter( $the_date, $d, $post ) {

    return mm_get_date_lang_support($the_date);

}
add_action( 'get_the_date', 'mm_date_lang_support_filter', 10, 3 );