The code section if (have_post()) in line 1 instructs WordPress to check whether blog posts are present. If blog posts are found in the database, the code section while (have_posts()) : the_post() makes the software perform the following functions in the loop, until have_posts() is no longer true – in order words, until no most posts are left.
The loop therefore includes all the features up to the PHP statementendwhile in line 6 – in this example, the_title(), which is used to display the article title, and the function the_excerpt(), which instructs the software to load the post’s excerpt from the database. When it comes to presenting content, the article title is issued in h2 heading format. The article preview is put out within a div box with the CSS class name, entry.
On the homepage of a WordPress blog, this kind of simple loop means that the title and text preview of posts following one another are shown starting with the most recent content. The number of displayed posts can be configured in the admin area. It’s usual for there to be more complex WordPress loops that contain links to single views of posts as well as various metadata, such as author, date, category, and tags.