One of the most important function in WordPress is the blog_info function:

<?php bloginfo( $show ); ?>

You can find all the information you need about the website

Their parameters are:

Parameters

$show

(string) (Optional) Keyword naming the information you want.

Default: name

• ‘name’ – Displays the “Site Title” set in Settings > General. This data is retrieved from the “blogname” record in the wp_options table.
• ‘description’ – Displays the “Tagline” set in Settings > General. This data is retrieved from the “blogdescription” record in thewp_options table.
• ‘wpurl’ – Displays the “WordPress address (URL)” set in Settings > General. This data is retrieved from the “siteurl” record in the wp_options table. Consider echoing site_url() instead, especially for multi-site configurations using paths instead of subdomains (it will return the root site not the current sub-site).
• ‘url’ – Displays the “Site address (URL)” set in Settings > General. This data is retrieved from the “home” record in thewp_options table. Consider echoing home_url() instead.
• ‘admin_email’ – Displays the “E-mail address” set in Settings > General. This data is retrieved from the “admin_email” record in the wp_options table.
• ‘charset’ – Displays the “Encoding for pages and feeds” set in Settings > Reading. This data is retrieved from the “blog_charset” record in the wp_options table. Note: In Version 3.5.0 and later, character encoding is no longer configurable from the Administration Panel. Therefore, this parameter always echoes “UTF-8”, which is the default encoding of WordPress.
• ‘version’ – Displays the WordPress Version you use. This data is retrieved from the $wp_version variable set in wp-includes/version.php.
• ‘html_type’ – Displays the Content-Type of WordPress HTML pages (default: “text/html”). This data is retrieved from the “html_type” record in the wp_options table. Themes and plugins can override the default value using thepre_option_html_type filter.
• ‘text_direction’ – Displays the Text Direction of WordPress HTML pages. Consider using is_rtl() instead.
• ‘language’ – Displays the language of WordPress.
• ‘stylesheet_url’ – Displays the primary CSS (usually style.css) file URL of the active theme. Consider echoingget_stylesheet_uri() instead.
• ‘stylesheet_directory’ – Displays the stylesheet directory URL of the active theme. (Was a local path in earlier WordPress versions.) Consider echoing get_stylesheet_directory_uri() instead.
• ‘template_url’ / ‘template_directory’ – URL of the active theme’s directory (‘template_directory’ was a local path before 2.6; seeget_theme_root() and get_template() for hackish alternatives.) Within child themes, both get_bloginfo(‘template_url’) and get_template() will return the parent theme directory. Consider echoing get_template_directory_uri() instead (for the parent template directory) or get_stylesheet_directory_uri() (for the child template directory).
• ‘pingback_url’ – Displays the Pingback XML-RPC file URL (xmlrpc.php).
• ‘atom_url’ – Displays the Atom feed URL (/feed/atom).
• ‘rdf_url’ – Displays the RDF/RSS 1.0 feed URL (/feed/rfd).
• ‘rss_url’ – Displays the RSS 0.92 feed URL (/feed/rss).
• ‘rss2_url’ – Displays the RSS 2.0 feed URL (/feed).
• ‘comments_atom_url’ – Displays the comments Atom feed URL (/comments/feed).
• ‘comments_rss2_url’ – Displays the comments RSS 2.0 feed URL (/comments/feed).
• ‘siteurl’ – Deprecated since version 2.2. Echo home_url(), or use bloginfo(‘url’).
• ‘home’ – Deprecated since version 2.2. Echo home_url(), or use bloginfo(‘url’).

Examples

Show Blog Title

Displays your blog’s title in a <h1> tag.

<h1><?php bloginfo('name'); ?></h1>

Show Blog Title in Link

Displays your blog’s title in a link.

<a href="<?php bloginfo('url'); ?>" title="<?php bloginfo('name'); ?>"><?php bloginfo('name'); ?></a>

Show Character Set

Displays the character set your blog is using (e.g. “utf-8”).

NOTE: In version 3.5 and later, default character encoding is set to UTF-8 and is not configurable from the Administration Screen.

<p>Character set: <?php bloginfo('charset'); ?> </p>

Show Blog Description

Displays the tagline of your blog as set in Settings > General.

<p><?php bloginfo('description'); ?> </p>

Example output

From version 2.7, in case of host example.com, the Blog address (URL) is shown as http://www.example.com/home, and theWordPress address (URL) is installed on http://www.example.com/home/wp.

Please note that directory URLs are missing trailing slashes.

admin_email          = admin@example.com
atom_url             = http://www.example.com/home/feed/atom
charset              = UTF-8
comments_atom_url    = http://www.example.com/home/comments/feed/atom
comments_rss2_url    = http://www.example.com/home/comments/feed
description          = Just another WordPress blog
home                 = http://www.example.com/home (DEPRECATED! use url option instead)
html_type            = text/html
language             = en-US
name                 = Testpilot
pingback_url         = http://www.example.com/home/wp/xmlrpc.php
rdf_url              = http://www.example.com/home/feed/rdf
rss2_url             = http://www.example.com/home/feed
rss_url              = http://www.example.com/home/feed/rss
siteurl              = http://www.example.com/home (DEPRECATED! use url option instead)
stylesheet_directory = http://www.example.com/home/wp/wp-content/themes/largo
stylesheet_url       = http://www.example.com/home/wp/wp-content/themes/largo/style.css
template_directory   = http://www.example.com/home/wp/wp-content/themes/largo
template_url         = http://www.example.com/home/wp/wp-content/themes/largo
text_direction       = ltr
url                  = http://www.example.com/home
version              = 3.5
wpurl                = http://www.example.com/home/wp