WP-php: code for post count published

Cara 1:
<?php echo wp_count_posts()->publish; ?>

Cara 2:
<?php
$count_posts = wp_count_posts();
echo $count_posts->publish;
?>

Cara 3:
<?php $numpost = $wpdb->get_var("SELECT COUNT(*) FROM $wpdb->posts WHERE post_status = 'publish' AND post_type = 'post'"); echo $numpost; ?>