Wordpress Post views count

// function to count views.

function tie_setPostViews() {

global $post;
$postID = $post->ID ;
    $count_key = 'tie_views';
    $count = get_post_meta($postID, $count_key, true);
    if($count==''){
        $count = 0;
        delete_post_meta($postID, $count_key);
        add_post_meta($postID, $count_key, '0');
    }else{
        $count++;
        update_post_meta($postID, $count_key, $count);
    }
}

add_filter('manage_posts_columns', 'tie_posts_column_views');
add_action('manage_posts_custom_column', 'tie_posts_custom_column_views',5,2);
function tie_posts_column_views($defaults){
    $defaults['tie_post_views'] = __('Views');
    return $defaults;
}
function tie_posts_custom_column_views($column_name, $id){
if($column_name === 'tie_post_views'){
        echo tie_views(get_the_ID());
    }
}
?>

where you want to show...

  <?php echo tie_views(); ?>

In single

<?php tie_setPostViews() ?>