wp-includes/ms-blogs.php:357Retrieves option value for a given blog id based on name of option.
$idint$optionstring$default_valuemixedoptionalfalsemixedOne hook fires while get_blog_option() runs, in this order:
Filters a blog option value.
function get_blog_option( $id, $option, $default_value = false ) { $id = (int) $id; if ( empty( $id ) ) { $id = get_current_blog_id(); } if ( get_current_blog_id() === $id ) { return get_option( $option, $default_value ); } switch_to_blog( $id ); $value = get_option( $option, $default_value ); restore_current_blog(); /** * Filters a blog option value. * * The dynamic portion of the hook name, `$option`, refers to the blog option name. * * @since 3.5.0 * * @param string $value The option value. * @param int $id Blog ID. */ return apply_filters( "blog_option_{$option}", $value, $id );}Introduced in MU (3.0.0). Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ms-blogs.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.