How to get WordPress post content by given id
You can use following way to get post content
$my_postid = 1;//page id or post id
$content_post = get_post($my_postid);
$content = $content_post->post_content;
$content = apply_filters('the_content', $content);
$content = str_replace(']]>', ']]>', $content);
echo $content;or using short way
echo apply_filters('the_content', get_post_field('post_content', $post_id));