how to finds funtion to get post wordpress code example
Example: wordpress get post by id
$post = get_post( 123 ); // Where 123 is the ID
$output = apply_filters( 'the_content', $post->post_content );
$post = get_post( 123 ); // Where 123 is the ID
$output = apply_filters( 'the_content', $post->post_content );