post_expiration_change

function post_change_expired_function_new () {
    if (is_admin()):
        return;
    endif;
	if (is_single()):
		$offer_coupon_date = get_post_meta( $post->ID, 'rehub_offer_coupon_date', true );
		$timestamp1 = strtotime($offer_coupon_date) + 86399;
		$seconds = $timestamp1 - (int)current_time('timestamp',0);
		$days = floor($seconds / 86400);
		$seconds %= 86400;
		if ($days > 0):
			$coupon_style = '';
			update_post_meta( get_the_ID(), 're_post_expired', 'no' );
		elseif ($days == 0):
			$coupon_style = '';
			update_post_meta( get_the_ID(), 're_post_expired', 'no' );
		else:
			$coupon_text = __('Expired', 'rehub_framework');
			$coupon_style = ' expired_coupon';
			update_post_meta( get_the_ID(), 're_post_expired', 1 );
		endif;
    endif;
}
add_action ( 'wp', 'post_change_expired_function_new', 100 );


function exclude_expired($query) {
	if (is_admin()):
		return;
	endif;
	if (is_archive()):
		return;
	endif;
	if (is_single()): 
		return;
	endif;
    $exclude = array();
    if ( $query->is_main_query() ) {
            $expired = get_posts(array(
                'post_type' => 'post',
                'meta_query' => array(
                    array(
                        'key' => 're_post_expired',
                        'value' => '1',
                        'compare' => '==',
                    ),
                ),
            ));

            foreach($expired as $hide) {
                $exclude[] = $hide->ID;
            }   

            $query->set('post__not_in', $exclude);
		}

}

add_filter( 'pre_get_posts', 'exclude_expired', 900 );