Conflict with DATE_W3C format

Unfortunately the only both Jalali Date plugins (“Parsi Date” and “WP-Farsi”) has conflict with “Yoast Seo plugin” and some others which uses DATE_W3C format.

The issue is converting Gregorian Date to Jalali Date in headers Meta Tags, which is must be stayed in Gregorian date.

<meta property="article:published_time" content="????-??-??\??:??:??" />
<meta property="article:modified_time" content="????-??-??\??:??:??" />
<meta property="og:updated_time" content="????-??-??\??:??:??" />

For fixing this issue you must add the following code in the “includes/parsidate.php”:

1- Find the persian_date function.
2- At the beginning of this function add the following code:

if ( $format == 'Y-m-d\TH:i:sP' ) {
    $format = 'c';
}

This code would convert DATE_W3C format to the ‘c’ format.

3- After that, in switch/case loop, remove the following line after case ‘c’:

$out = $date['year'] . '/' . $date['mon'] . '/' . $date['mday'] . ' ' . $date['hours'] . ':' . (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']) . ':' . (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds']);

4- Then add the following code instead of removed line:

list($eng_date['year'], $eng_date['mon'], $eng_date['mday']) = self::persian_to_gregorian( $date['year'], $date['mon'], $date['mday'] );
$out = $eng_date['year'] . '-' . $eng_date['mon'] . '-' . $eng_date['mday'] . 'T' . $date['hours'] . ':' . (($date['minutes'] < 10) ? '0' . $date['minutes'] : $date['minutes']) . ':' . (($date['seconds'] < 10) ? '0' . $date['seconds'] : $date['seconds']) . '+04:30';
$lang = 'eng';

5- One more update is to find the persian_to_gregorian function, and change the last return line to the following code:

return array($gy, strlen($gm) == 1 ? '0' . $gm : $gm, strlen($gd) == 1 ? '0' . $gd : $gd);

This editing is on ParsiDate plugin (ver.2.3.4). I hope it solved in the upcomming version.