wp-includes/general-template.php:967Displays information about the current site.
$showstringoptional''function bloginfo( $show = '' ) { echo get_bloginfo( $show, 'display' );}Introduced in 0.71. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/general-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.