the_content() printing site title after page/post title and before its content

The culprit was within an add_filter function. Commenting out the following removed the site title from above the page/post content:

function add_post_content($content) {
    if(!is_feed() && !is_home()) {
        $content .= '<p>This article is copyright &copy; '.date('Y').'&nbsp;'.bloginfo('name').'</p>';
    }
    return $content;
}
add_filter('the_content', 'add_post_content');

The first part, “This article is copyright (c)”, printed where you’d expect, but bloginfo(‘name’) was appearing before the rest of the content.

Edit — explanation:

In the WordPress Code Reference, some cryptic advice appears: “This always prints a result to the browser. If you need the values for use in PHP, use get_bloginfo().” Bloginfo() consists of an echo statement, so it prints to the browser immediately while the code is being pre-processed.

My call to bloginfo() within a function in my child theme’s functions.php was processed before WordPress had a chance to print the page’s or post’s content, so that’s when the output of the function appeared. Instead, get_bloginfo() only returns the data corresponding to the requested argument.

Related Posts: