Please write below code in functions.php
function get_cpt_archives( $cpt, $echo = false ) // $cpt = custom post type slug
{
global $wpdb;
$sql = $wpdb->prepare("SELECT * FROM $wpdb->posts WHERE post_type = %s AND post_status = 'publish' GROUP BY YEAR(wp_posts.post_date), MONTH(wp_posts.post_date) ORDER BY wp_posts.post_date DESC", $cpt);
$results = $wpdb->get_results($sql);
if ( $results )
{
$archive = array();
foreach ($results as $r)
{
$year = date('Y', strtotime( $r->post_date ) );
$month = date('F', strtotime( $r->post_date ) );
$month_num = date('m', strtotime( $r->post_date ) );
$link = get_bloginfo('siteurl') . '/corporate/' . $cpt . '/' . $year . '/' . $month_num;
$this_archive = array( 'month' => $month, 'year' => $year, 'link' => $link );
array_push( $archive, $this_archive );
}
if( !$echo )
return $archive;
foreach( $archive as $a )
{
echo '<li><a href="' . $a['link'] . '">' . $a['month'] . ' ' . $a['year'] . '</a></li>';
}
}
return false;
}
In sidebar page you have to write below function:
get_cpt_archives('Custom Post Type Slug');
